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At-Home Standards Practice
To Students and Their Families,
Welcome to sixth-grade Earth science. You will begin
your journey by learning about the tools that Earth
scientists use. Then you will continue with the structure
of Earth and its resources.
Take a few moments each day to review what you have
learned about Earth science. Test your knowledge of each
Standard by answering the questions.
Remember, the knowledge and skills you will gain this
year will be important beyond the classroom. They will
help you to become environmentally aware and to better
understand the planet on which you live.
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At-Home Standards Practice
Table of Contents
Standard Set 1 Plate Tectonics and Earth’s Structure . . . 630
Standard Set 2 Shaping Earth’s Surface . . . . . . . . . . . . . . 632
Standard Set 3 Heat (Thermal Energy)
(Physical Science). . . . . . . . . . . . . . . . . . . 634
Standard Set 4 Energy in the Earth System . . . . . . . . . . . 636
Standard Set 5 Ecology (Life Science) . . . . . . . . . . . . . . . 638
Standard Set 6 Resources . . . . . . . . . . . . . . . . . . . . . . . . . 640
Standard Set 7 Investigation and Experimentation . . . . 642
Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 644
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At-Home Standards Practice
Standard Set 1: Plate Tectonics and Earth’s Structure
Directions: Select the best answer for each of the following questions.
1
Earthquakes and volcanic eruptions often occur
in the same regions of the world. What is the best
explanation for this?
A Earthquakes disturb magma below the surface
and cause volcanic eruptions.
B Volcanism weathers rocks, making them more
likely to experience an earthquake.
C Both earthquakes and volcanic eruptions are
triggered by the gravitational pull of the Moon.
D Both earthquakes and volcanic eruptions occur
most frequently along plate boundaries.
6 Which drawing should be used to model where
Earth’s mantle, crust, and core are found?
A
B
C
2 The Marianas Islands are an arc of volcanic
islands in the Pacific Ocean. Based on this fact
only, which is most likely to be true?
A Tectonic plates collide near the Marianas
Islands.
B The Marianas Islands are larger than most
islands.
C The Marianas Islands have a warm and wet
climate.
D There is very little seismic activity near the
Marianas Islands.
3 The theory of continental drift and plate tectonics was first proposed by
A Alfred Wegener.
B Charles Darwin.
C Christopher Columbus.
D Isaac Newton.
4 The shape of Earth’s mantle is best described as
A a pie slice.
B a solid sphere.
C a hollow ball.
D a rectangular prism.
5 Which of these physical processes causes the
slow motion of lithospheric plates?
A radiation
B conduction
C convection
D evaporation
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At-Home Standards Practice
D
7 If a continental plate is moving at a rate of
3 cm/year, about how long would it take a continental plate to travel 1 m?
A 6–8 months
B 1–3 years
C 20–50 years
D 300–600 years
8 In which geologic layer does motion cause the
movements of the continents?
A crust
B mantle
C inner core
D outer core
9 Earthquakes are caused by the motion of
A tectonic plates.
B the mantle.
C hurricanes.
D mountain ranges.
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At-Home Standards Practice
Standard Set 1: Plate Tectonics and Earth’s Structure
Directions: Select the best answer for each of the following questions.
10 Once magma pushes through to Earth’s surface,
it is called
A gas.
B lava.
C ash.
D mud.
11 What is another name for a rupture in Earth’s
crust?
A earthquake
B volcano
C fault
D fissure
12 The process of one tectonic plate sliding under
another is called
A faulting.
B spreading.
C subduction.
D folding.
13 Movements in Earth’s mantle cause the
A regular patterns of the tides.
B flipping of the magnetic poles.
C slow weathering of mountains.
D changes in sizes of the ocean basins.
14
Q
R
Motion
S
of Tectonic
Plate
T
In the figure above, which is the order of the
volcanoes, from youngest to oldest, that were
formed by the motion of this tectonic plate?
A Q, R, S, T
B T, S, Q, R
C Q, T, S, R
D T, S, R, Q
15 Most of California sits on which continental plate?
A California Plate
B North American Plate
C Pacific Plate
D San Andreas Plate
16 The San Andreas fault is an example of which
type of plate boundary?
A convergent
B divergent
C transform
D uniform
17 California includes diverse geologic features
such as mountain ranges, lower valleys, and desert basins. Why don’t most other U.S. states have
the same diversity of landforms?
A Most other states do not border an ocean.
B The weather in California is unique.
C California is closer to the equator than other
states.
D Most other states are not located on a major
geologic fault.
18 Which type of seismic wave travels fastest?
A compression (P)
B shear (S)
C surface
D Rayleigh
19 How does an earthquake measuring 7.0 on the
Richter scale compare to one measuring 6.0?
A A 7.0 earthquake is twice as powerful as a 6.0
earthquake.
B A 7.0 earthquake is 1/8th more powerful than a
6.0 earthquake.
C A 7.0 earthquake is ten times more powerful
than a 6.0 earthquake.
D A 7.0 earthquake is half as powerful as a 6.0
earthquake.
20 Which type of seismic wave usually produces the
most destruction?
A compression (P)
B shear (S)
C surface
D Love
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At-Home Standards Practice
Standard Set 2: Shaping Earth’s Surface
Directions: Select the best answer for each of the following questions.
6
1
Which naturally occurring cause of landscape
changes has most powerfully shaped Yosemite
Valley?
A lightning
B sunlight
C running water
D strong winds
2
Which is an example of mass wasting?
A Construction crews dig out a silver mine.
B Rain loosens the soil, and it slides downhill.
C A large fissure is formed by a fault line.
D Grass growing through the sidewalk cracks the
concrete.
Which is probably most responsible for the formation of the canyon in the figure above?
A wind
B water
C plants
D animals
3
Water erodes mountains and washes sediments
to low areas where the soil is compacted over
time and formed into new rock. Which is the
name of this process?
A life cycle
B metamorphic cycle
C water cycle
D geologic cycle
7 Which two physical processes are at work in a
flowing river?
A chemical weathering and electrolytic weathering
B mass wasting and biological weathering
C biological and mechanical weathering
D mechanical and chemical weathering
4
Which is the dominant erosional process that
has shaped California’s landscape?
A blowing wind
B water running downhill
C fire
D earthquakes
5
Which is the primary force behind mass wasting?
A gravity
B electricity
C magnetism
D chemistry
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At-Home Standards Practice
8
The energy of a flowing stream depends on
which two factors?
A the temperature and the volume of the flowing
water
B the slope of the land and the volume of the
water flow
C the slope of the land and related geological
faults
D the composition of the soil and the slope of the
land
9
Which best explains why deltas usually form
where rivers enter the ocean?
A A river’s rate of flow decreases significantly,
causing sediment to be deposited.
B A river’s headward erosion removes sediment,
causing the ocean to move onto land.
C The salty seawater mixes with the fresh river
water, causing minerals to precipitate.
D The dense freshwater sinks beneath the salt
water, causing sediment to be deposited.
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At-Home Standards Practice
Standard Set 2: Shaping Earth’s Surface
Directions: Select the best answer for each of the following questions.
Size of largest
particle carried (cm)
10 Rivers and streams carry sediments from one
location to another. Which graph shows that
the faster a river flows, the larger the particle the
river can carry?
A
60
50
40
30
20
10
0
D
Size of largest
particle carried (cm)
C
Size of largest
particle carried (cm)
B
Size of largest
particle carried (cm)
0 1 2 3 4 5 6 7
Speed of river
(m/sec)
11 Which is the source for much of the sand present
on a beach?
A rivers
B wind
C ocean waves
D volcanic eruptions
12 Which is the primary mechanism responsible for
moving sediment along the beach?
A water currents
B evaporation
C wave action
D mass wasting
13 Which is not often found in the composition of
sand on California beaches?
A quartz
B feldspar
C magnetite
D limestone
120
100
80
60
40
20
0
0 1 2 3 4 5 6 7
Speed of river
(m/sec)
14 Beaches and coastlines are not static formations
and will change naturally over time. Why?
A Wave action erodes and moves beach materials.
B Global warming influences water levels along
the coastline.
C Human development rebuilds beaches for our
own purposes.
D Periodic droughts pull more water away from
the beach.
0 1 2 3 4 5 6 7
Speed of river
(m/sec)
15 Silt and clay settle to the ocean bottom farther
from the shore than rocks and pebbles because
of their
A chemical composition.
B spherical shape.
C crystalline structure.
D low density.
120
100
80
60
40
20
0
120
100
80
60
40
20
0
0 1 2 3 4 5 6 7
Speed of river
(m/sec)
16 An earthquake is most likely to affect a forest
ecosystem by
A starting wildfires.
B causing landslides.
C decreasing rainfall.
D raising temperatures.
At-Home Standards Practice
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At-Home Standards Practice
Standard Set 3: Heat (Thermal Energy) (Physical Science)
Directions: Select the best answer for each of the following questions.
7
Which is a unit of measure for heat?
A hertz
B volt
C degree
D calorie
When a moving automobile is stopped by the
friction of applying its brakes, its kinetic energy
is ultimately transformed into which form of
energy?
A electricity
B gravity
C heat
D radioactivity
8
An opera singer can shatter glass using only her
voice. How is the energy transferred from the
singer to the glass?
A air pressure
B electromagnetic waves
C heat flow
D sound waves
Which process is responsible for the heat flow in
a solid?
A erosion
B conduction
C convection
D capacitance
9
Where is the energy stored in fuel before it is
burned?
A in the surface layer of the material
B in the gravitational attraction of the material
C in the chemical bonds of the material
D in the electromagnetic properties of the material
1
Which phenomenon cannot transfer heat energy
from one place to another?
A electromagnetic waves
B gravitational attraction
C infrared radiation
D movement of matter
2
3
4
5
6
634
Which statement correctly describes the transfer
of thermal energy?
A Thermal energy moves only between two hot
objects.
B Thermal energy moves only between two cold
objects.
C Thermal energy moves from a warmer object
to a cooler object.
D Thermal energy moves from a cooler object to
a warmer object.
Which is a description of heat?
A potential energy from atoms moving in many
directions
B measure of kinetic energy of atoms in an object
C transfer of kinetic energy from one object to
another
D when two objects cause each other to lose atoms
The energy from consumed fuel ultimately tends
to transform into
A heat.
B work.
C light.
D waste.
At-Home Standards Practice
10 What is the relationship between the waste product of a consumed fuel and the original fuel?
A The waste product has much less energy than
the original fuel.
B The waste product has half the energy of the
original fuel.
C The waste product has the same energy as the
original fuel.
D The waste product has more energy than the
original fuel.
11 Naomi placed one end of a metal spoon in a
beaker of water and heated the beaker of water.
Which hypothesis is best tested by Naomi’s
experiment?
A Fire is a chemical reaction.
B Hands can detect very cold temperatures.
C Metal does not burn.
D Metal conducts heat well.
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At-Home Standards Practice
Standard Set 3: Heat (Thermal Energy) (Physical Science)
Directions: Select the best answer for each of the following questions.
12
Heat Transfer
Type of Transfer
How It Transfers
Radiation
With rays or waves
Conduction
Contact of material
Convection
Flow of material
Heat can be transferred in several ways. The
table above describes three types of heat transfer.
Which is an example of conduction?
A the Sun shining on a metal chair
B a fire heating a room
C a metal pan burning a hand
D a hair dryer blowing hair
13 Which statement describes the flow of heat by
conduction?
A Heat flows from a hot object to a cool object.
B Heated air rises while colder air descends.
C Heat flows from a cool object to a hot object.
D An object is heated when struck by light rays.
14 Which type of energy transfer occurs when the
heat in beach sand transfers to a person’s feet?
A convection
B conduction
C radiation
D kinetic
15 What is a medium through which energy can be
transferred by radiation but not by convection or
conduction?
A air
B water
C oxygen
D vacuum
16 Sarah fi lls a teapot with water and heats it using
a kitchen stove. She uses a thermometer to record the temperature of the water 1 cm above the
bottom of the teapot and 1 cm under the surface
of the water. Which can Sarah conclude about
the two temperatures?
A The water temperature at the bottom is hotter
because it is closer to the heat source.
B The water temperature at the top is hotter
because of convection currents.
C The two temperatures are the same due to conduction currents in the water.
D The two temperatures are the same due to convection currents in the water.
17 The diagram below shows how heat moves
within a cup of hot cocoa.
Cold
Hot
This kind of heat transfer is called
A conduction.
B convection.
C radiation.
D reflection.
18 The energy transferred during radiation is
carried by
A circulating currents.
B chemical compounds.
C ultrasound vibrations.
D electromagnetic waves.
At-Home Standards Practice
635
At-Home Standards Practice
Standard Set 4: Energy in the Earth System
Directions: Select the best answer for each of the following questions.
Energy from the Sun travels to Earth as
A seismic waves.
B electromagnetic waves.
C a uniform electric field.
D a uniform magnetic field.
6
Clouds
Wind
Rain
Evap
oratio
n
1
Ru
no
ff
2
Ocean
The diagram above shows
A the nitrogen cycle.
B the water cycle.
C the oxygen cycle.
D the soil cycle.
Look at the figure above. Which thing depends
most on solar radiation to supply energy to
directly sustain it?
A bird
B boulder
C fire
D tree
3 Solar radiation is converted directly to stored
energy in plants through
A the water cycle.
B photosynthesis.
C radiation.
D convection currents.
4 Most of the energy given off by the Sun arrives
on Earth in what form?
A gamma rays
B infrared radiation
C visible light
D X rays
5 Energy from the Sun travels through space to
Earths’ surface by
A radiation.
B reflection.
C conduction.
D convection.
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At-Home Standards Practice
7 Why does the sky appear blue?
A Infrared light from the Sun appears blue to
human eyes.
B Yellow light is filtered out by green plants, leaving only blue light.
C The atmosphere reflects the blue waters of the
oceans.
D Blue wavelengths of visible light are scattered
in Earth’s atmosphere.
8 Light travels through space from the Sun to
Earth by
A radiation.
B absorption.
C conduction.
D convection.
9 A volcano is an example of which type of heat
transfer?
A convection
B radiation
C conduction
D erosion
10 Which of these natural materials is not a good
conductor of heat?
A water
B rock
C air
D metal
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At-Home Standards Practice
Standard Set 4: Energy in the Earth System
Directions: Select the best answer for each of the following questions.
11 The movement of tectonic plates requires large
amounts of energy. Where does this energy
originate?
A convection currents in the mantle
B friction between continental plate boundaries
C solar radiation absorbed by Earth’s crust
D weight of water in the oceans over the crust
17 Students are interested in predicting whether
or not a storm will arrive. Which datum will be
most useful?
A time of sunrise
B time of high tide
C change in air pressure
D change in the Sun’s position
12 Heat from Earth’s interior moves in which
direction?
A heat from the interior does not move
B toward the warmer core
C back and forth at the same elevation
D toward the cooler crust
18 Which is the best explanation why warmer air
causes an increase in humidity and cooler air
causes a decrease in humidity?
A Sunlight evaporates moisture.
B Saturated air cannot hold any more moisture.
C Cool air causes water molecules to join and
condense.
D The dew point changes with the amount of
moisture in the air.
14 The trail of smoke from a burning match can
best be used to observe what in the atmosphere?
A atmospheric pressure
B convection currents
C ambient temperature
D air quality
15 Which usually does not affect the movement of
air currents in the atmosphere?
A Earth’s rotation
B ocean temperatures
C magnetic field from Earth’s poles
D warming of the atmosphere by the Sun
16 Dropping food coloring in a container of water
that is being heated or cooled is a good way to
observe
A convection currents in the water.
B the temperature of the water.
C contaminants in the water.
D electric currents in the water.
19 Which usually does not result in a change in the
weather?
A humidity variations
B changes in the Moon’s phase
C differences in atmospheric pressure
D uneven heating of the land and the ocean
20
Atmospheric pressure
13 When a large volcano erupts, its effects are seen
in the atmosphere around the world. Which
physical phenomenon causes this?
A convection currents in the atmosphere
B kinetic energy of the ejected contents
C magnetic force from Earth’s poles
D radioactivity from the ejected contents
Line 3
Line 1
Line 2
Line 4
10
20
30
40
Temperature of Air (°C)
Which line above correctly represents the relationship of temperature to atmospheric pressure?
A 1
B 2
C 3
D4
At-Home Standards Practice
637
At-Home Standards Practice
Standard Set 5: Ecology (Life Science)
Directions: Select the best answer for each of the following questions.
1
In order to survive, most plants need to make
their own food through the process of photosynthesis. Which best describes the role of the Sun
in photosynthesis?
A It warms the air.
B It carries away oxygen.
C It produces carbon dioxide.
D It provides a source of energy.
2
3
Which of these is the ultimate source of energy
in the energy pyramid?
A water
B air
C the Sun
D soil
4
Plants must take in carbon dioxide from the
atmosphere in order to carry out photosynthesis.
Which process contributes to the availability of
carbon dioxide in the atmosphere?
A exhalation of air from an animal
B evaporation of water from a lake
C dissolution of nitrogen in the soil
D condensation of moisture in the air
Energy Web
5
Horned owls
Voles
Mice
Berries and nuts
Shrews
Owl
Worms and insects
Starling
Grasses
Grasshopper
Dead leaves
Trees and shrubs
Grass
Sun, rain, and soil
What would happen in the energy web above
if the horned owl population were reduced by
disease?
A The rate of photosynthesis would decrease.
B Berries and nuts would become more plentiful.
C The number of voles, mice, and shrews would
increase.
D The amount of dead leaves would decrease.
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At-Home Standards Practice
Examine the pyramid above. A food pyramid is
one way of showing how much energy flows from
one level to another in an ecosystem. Based on
this pyramid, which organism has access to the
most energy?
A grass
B grasshopper
C starling
D owl
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Standard Set 5: Ecology (Life Science)
Directions: Select the best answer for each of the following questions.
6
Which shows the food chain in the correct order?
A zooplankton → bear → salmon
B salmon → zooplankton → bear
C zooplankton → salmon → bear
D bear → zooplankton → salmon
7
A local company dumped sewage into the wetlands. As a result, most of the fish in the wetlands died. This decrease in the number of fish
will probably result in fewer
A mice.
B birds.
C spiders.
D insects.
8
9
Organisms in a population are categorized as
either producers or consumers of
A gravitational potential energy.
B kinetic energy.
C electrical energy.
D chemical energy.
Which category of organisms does not include
consumers?
A decomposers
B constructors
C predators
D scavengers
10 The location of a rabbit species stays the same,
but its environment changes due to a drought
that changes a swamp into a desert. Does the ecological role of this rabbit species stay the same?
A probably not
B most likely
C depends on the location
D depends on the species
11 Which defines the ecological role of a particular
species of mouse found in the Andes Mountains
of South America?
A environment
B geography
C food consumption
D rate of reproduction
12
Picture A
Picture B
The ecosystem in Picture A is healthy, while the
ecosystem in Picture B is not. What seems to be
needed to help the organisms in picture B
survive?
A more sunny days
B more water
C fewer predators
D more wind
13 Which is not an abiotic environmental factor?
A air
B animals
C soil
D water
At-Home Standards Practice
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At-Home Standards Practice
Standard Set 6: Resources
Directions: Select the best answer for each of the following questions.
1
The evening news reports that modern technology is going to help reduce the problems of smog
and the greenhouse effect. The new report is
talking about
A finding replacements for CFCs.
B composting more garbage.
C using alternatives to fossil fuels.
D building containers for nuclear waste.
2 Although people once thought hydroelectric
energy did not harm the environment, it is now
known that building dams for hydroelectric
energy plants
A increases global warming.
B interferes with the habitats of fish.
C causes the hole in the ozone layer.
D causes acid rain.
3 One of the disadvantages of nuclear energy is
that it is difficult to dispose of the waste materials safely. This waste material is hazardous
mainly because
A it causes acid rain.
B it releases greenhouse gases.
C it contains corrosive chemicals.
D it releases dangerous forms of energy.
4 Nuclear energy plants can have a negative effect
on the environment in which way?
A They regularly release low-grade radioactive
gases into the air.
B They regularly release low-grade radioactive
wastes into rivers and lakes.
C They regularly release water that is at a higher
temperature than the intake water.
D They regularly release carbon dioxide, sulfur
dioxide, and nitrogen dioxide into the air.
640 At-Home Standards Practice
5 A national environmental group has been monitoring the country’s use of coal for generating
energy. Their data indicate that the use of coal
has increased over the past 5 years. What prediction could they make from this information?
A Lakes and rivers will be healthier.
B Many species of fish will thrive.
C The atmosphere might become more polluted.
D Levels of nitrogen in the atmosphere will drop.
6 Which is not a renewable energy source?
A solar energy
B wind energy
C geothermal energy
D fossil fuels
7 All are nonrenewable energy sources except
A coal.
B geothermal energy.
C natural gas.
D petroleum oil.
8
Some Natural Resources
Sun
Coal
Water
The figure above shows some natural resources
for usable energy. Which is a valid statement
about all natural resources?
A All natural resources are not renewable.
B All natural resources are renewable.
C Some natural resources are made in factories.
D Some natural resources are renewable, and
some are not.
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Standard Set 6: Resources
Directions: Select the best answer for each of the following questions.
9 Nonrenewable resources are natural resources
that cannot be replaced quickly by nature when
they are used. According to this definition,
which is a nonrenewable resource?
A
12 Which is the major characteristic of nonrenewable energy resources?
A They will eventually run out.
B They are inexhaustible.
C They are made by humans.
D They are used only in cars.
13 What natural resource is used to make plastics?
A water
B sand
C oil
D wood
B
14 Which material is a renewable resource?
A oil
B wood
C natural gas
D coal
C
PE
T RO L E U M
OIL
15 The cotton material that is used to make many of
your shirts originates from
A a plant.
B a fish.
C oil.
D the soil.
D
10 Which natural resource is renewable?
A coal
B natural gas
C oil
D water
11 Engineers sometimes put solar panels on the
roofs of buildings. These solar panels can be
used to
A grow plants on the roof.
B make stronger roofs.
C make heat and electrical energy.
D reduce the ozone layer hole.
16 Which is the natural origin of the gasoline used
as energy in most vehicles?
A hydrogen
B oil
C water
D coal
17 Which is considered a renewable resource?
A coal
B water
C soda can
D petroleum
At-Home Standards Practice
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At-Home Standards Practice
Standard Set 7: Investigation and Experimentation
Directions: Select the best answer for each of the following questions.
1 Some Organisms’ Embryonic Development
Organism
Embryo
Week 2
Embryo
Week 4
3
Consumer / Producer Relationships
Producer
Consumer
100
Embryo
Week 6
90
1
gill slits
gill slits
2
4 limbs
4 legs
and a tail
3
4 limbs
2 limbs
and 2 wings
Weight in Tons
80
70
60
50
40
30
20
10
The chart above is being fi lled in as data from an
experiment become available. Which is the most
likely hypothesis for this experiment?
A The three organisms share a common ancestor.
B Most embryos acquire their parents’
characteristics.
C Each of these organisms requires six weeks to
produce offspring.
D Gill slits are not essential to live.
2 Grass grows through a crack in a concrete sidewalk. Nearby, the root of an old tree is spreading
across the top of the sidewalk. In this scenario,
which material is the oldest?
A root of the tree
B concrete of the sidewalk
C grass growing in the crack
D soil beneath the sidewalk
642 At-Home Standards Practice
0
1960 1970
1980 1990
2000
Year
The graph above shows consumer/producer
populations over several years. A reasonable
hypothesis based on these data is that if the producer population decreases, then
A the predator population will increase.
B the producer population will become extinct.
C soil nutrients will decrease.
D the consumer population will decrease.
4
If you were going to examine the organisms living in a water sample from a nearby pond, which
scientific tool would you most likely use?
A telescope
B binoculars
C microscope
D spring scale
5
A science class wants to measure the atmospheric
pressure around the school. Which instrument
would students use to record atmospheric
pressure?
A thermometer
B barometer
C water gauge
D mass scale
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Standard Set 7: Investigation and Experimentation
Directions: Select the best answer for each of the following questions.
6
The composition of the air we breathe is about
78 percent nitrogen, 21 percent oxygen, and
1 percent other gases. Which graph best illustrates this information?
A
Nitrogen
9
Rate of Photosynthesis v.
Temperature for a Plant
Rate of
photosynthesis
Other
Oxygen
B
0
Nitrogen
Other
Nitrogen
Other
Nitrogen
Other
Oxygen
7
Information gathered from an investigation is
called data and can be expressed
A as verbal, written, or numerical information.
B only in a graph or a table.
C as a hypothesis or a theory.
D as a peer-reviewed journal article.
8
Which is a reason for publishing the procedures
and the results of scientific research?
A to make the research seem more scientific
B to allow the researchers to show their success
to other scientists
C to allow other scientists to confirm that acceptable research methods were used
D to be able to obtain patents on the procedures
so that the researchers can earn money from
their research
30
40
50
Which explanation of the graph above is best
supported by the data?
A Photosynthesis does not occur at 0°C.
B Photosynthesis occurs at the fastest rate at
50°C.
C The rate of photosynthesis increases from 30°C
to 40°C.
D The rate of photosynthesis at 45°C is greater
than that at 25°C.
Oxygen
D
20
Temperature (°C)
Oxygen
C
10
10 What type of map shows changes in elevation on
Earth’s surface?
A Mercator projection
B gnomonic projection
C contour map
D GPS
11
In the figure above, which layer of rock is most
likely the youngest?
A top layer
B layer second from the top
C center layer
D bottom layer
At-Home Standards Practice
643
At-Home Standards Practice
The answers for the At-Home Standards Practice presented on the previous pages are
listed below. Use this answer key to check your understanding of the Standards. If you
need help with a question, use the chapter and lesson reference to go back and review.
Standard Set 1 :
Standard Set 2:
Standard Set 3:
Pages 630–631
Pages 632–633
Pages 634–635
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
D
A
A
C
C
C
C
B
A
B
C
C
D
D
B
C
D
A
C
C
Chp. 5, Lesson 1
Chp. 2, Lesson 1
Chp. 4, Lesson 1
Chp. 2, Lesson 3
Chp. 4, Lesson 3
Chp. 2, Lesson 3
Chp. 4, Lesson 3
Chp. 4, Lesson 3
Chp. 6, Lesson 1
Chp. 7, Lesson 2
Chp. 5, Lesson 1
Chp. 5, Lesson 1
Chp. 4, Lesson 2
Chp. 7, Lesson 1
Chp. 5, Lesson 2
Chp. 5, Lesson 1
Chp. 5, Lesson 2
Chp. 6, Lesson 2
Chp. 6, Lesson 3
Chp. 6, Lesson 2
644 At-Home Standards Practice
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
C
B
D
B
A
B
D
B
A
B
A
C
D
A
D
B
Chp. 8, Lesson 3
Chp. 8, Lesson 2
Chp. 8, Lesson 2
Chp. 8, Lesson 3
Chp. 8, Lesson 2
Chp. 8, Lesson 2
Chp. 8, Lesson 1
Chp. 8, Lesson 2
Chp. 8, Lesson 2
Chp. 8, Lesson 2
Chp. 8, Lesson 2
Chp. 10, Lesson 3
Chp. 10, Lesson 3
Chp. 10, Lesson 3
Chp. 8, Lesson 2
Chp. 6, Lesson 4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
B
D
D
C
C
A
C
B
C
A
D
C
A
B
D
A
B
D
Chp. 3, Lesson 2
Chp. 3, Lesson 1
Chp. 3, Lesson 2
Chp. 3, Lesson 2
Chp. 3, Lesson 3
Chp. 3, Lesson 3
Chp. 3, Lesson 2
Chp. 3, Lesson 4
Chp. 3, Lesson 1
Chp. 3, Lesson 2
Chp. 3, Lesson 4
Chp. 3, Lesson 4
Chp. 3, Lesson 4
Chp. 3, Lesson 4
Chp. 3, Lesson 4
Chp. 3, Lesson 4
Chp. 3, Lesson 4
Chp. 3, Lesson 4
At-Home Standards Practice
Standard Set 4:
Standard Set 5:
Standard Set 7:
Pages 636–637
Pages 638–639
Page 642–643
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
B
D
B
C
A
B
D
A
A
B
A
D
A
B
C
A
C
C
B
B
Chp. 9, Lesson 1
Chp. 9, Lesson 1
Chp. 9, Lesson 1
Chp. 9, Lesson 1
Chp. 9, Lesson 1
Chp. 9, Lesson 1
Chp. 9, Lesson 1
Chp. 9, Lesson 1
Chp. 2, Lesson 3
Chp. 3, Lesson 4
Chp. 4, Lesson 3
Chp. 2, Lesson 3
Chp. 9, Lesson 3
Chp. 9, Lesson 3
Chp. 9, Lesson 3
Chp. 3, Lesson 4
Chp. 11, Lesson 2
Chp. 11, Lesson 1
Chp. 11, Lesson 2
Chp. 11, Lesson 1
1
2
3
4
5
6
7
8
9
10
11
12
13
D
C
C
A
C
C
B
D
A
A
C
B
B
Chp. 13, Lesson 2
Chp. 13, Lesson 1
Chp. 13, Lesson 2
Chp. 13, Lesson 3
Chp. 13, Lesson 1
Chp. 13, Lesson 1
Chp. 13, Lesson 1
Chp. 13, Lesson 1
Chp. 13, Lesson 1
Chp. 12, Lesson 2
Chp. 12, Lesson 2
Chp. 12, Lesson 1
Chp. 2, Lesson 1
1
2
3
4
5
6
7
8
9
10
11
D
D
D
C
B
C
A
C
C
C
A
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Tools of the Scientist
Standard Set 6:
Pages 640–641
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
A
B
D
C
C
D
B
D
C
D
C
A
C
B
A
B
B
Chp. 14, Lesson 3
Chp.14, Lesson 2
Chp.14, Lesson 2
Chp.14, Lesson 2
Chp.14, Lesson 3
Chp.14, Lesson 2
Chp.14, Lesson 3
Chp.14, Lesson 3
Chp.14, Lesson 3
Chp.14, Lesson 3
Chp.14, Lesson 2
Chp.14, Lesson 2
Chp.14, Lesson 3
Chp.14, Lesson 2
Chp.14, Lesson 3
Chp.14, Lesson 3
Chp.14, Lesson 2
At-Home Standards Practice
645