Download NAME_____________________________ 6th Grade Science DO

NAME_____________________________
6th Grade Science
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1. Which cellular process converts light energy from the sun into chemical energy that
organisms use for life functions?
A. digestion, in which starch is broken down into simple sugars
B. respiration, in which oxygen is used and carbon dioxide is given off
C. fermentation, in which sugar is broken down and alcohol is given off
D. photosynthesis, in which carbon dioxide is used and sugars are produced
2. Which is the function of the cell membrane?
A. to support the cell
B. to perform different functions in each cell
C. to control what enters and leaves a cell
D. to form a hard outer covering for the cell
3. The part of the plant cell that gives it a rigid shape is the:
A. cell wall
B. cell membrane
C. cytoplasm
D. vacuole
4. Which of the following statements is part of the cell theory?
A. only plants are composed of cells
B. all cells are produced from other cells
C. cells can be produced from nonliving matter
D. cells are one of the several basic units of structure and function in living things
5. The cell membrane in an animal cell allows water molecules to move from area of high to
low concentration through a permeable membrane. This process, which is essential for the
cell’s survival, is known as _________ .
A. engulfing
B. active transmission
C. osmosis
D. endoplasmic reticulum
6. Use the information below to answer question 6.
The diagram below represents a cross section of a lagoon and some of its aquatic organisms.
A magnified view (400x magnification) of each organism is shown.
Structure Z serves the same function in each of the organisms. What is the function of
structure Z in the water lily, fish, and paramecium cells?
A. To move the cells
B. To control cellular activities
C. To carry out photosynthesis
D. To allow nutrients to enter and exit the cells
7. Why do earthworms and birds need to have gizzards but mammals do not?
A. Earthworms and birds are not equipped to chew food
B. Earthworms and birds eat food that is difficult to digest
C. Earthworms and birds have intestines that work inefficiently
D. Earthworms and birds do not have stomachs to mix moistened food
8. Which is the function of the cell wall?
A. to direct all the cells activities
B. to perform different functions in each cell
C. to form a hard outer covering that supports the cell
D. to control what enters and leaves a cell
9. Which sequence correctly shows the order from simplest to most complex in multicellular
organisms?
A. Cell --------> Organ System ---------> Tissue ---------> Organ
B. Cell ---------> Tissue ---------> Organ ---------> Organ System
C. Organ System ---------> Organ ---------> Cell ---------> Tissue
D. Organ System ---------> Organ ---------> Tissue ---------> Cell
10. Which organelle captures energy from sunlight and uses it to produce food?
A. Cytoplasm
B. Mitochondrion
C. Chloroplast
D. Lysosomes
11. Use the photo below of the Cell City to answer question 11.
The nucleus of a cell is like which part of a city?
A. City Hall because it controls all the activities in the city
B. City Limits because it’s the boundaries of the city
C. Warehouse because it stores materials until they are needed
D. Power Plant because it produces energy for the cell
12. The intestines are organs made up of several types of tissue. For example, blood tissue
and nerve tissue are found in the intestines.
What is another type of tissue that makes up the intestines?
A. Mitochondria
B. Organelles
C. Muscle
D. Heart
13. Animal cells are round and irregular in shape while plant cells have fixed, rectangular
shapes. Plant cells and animals cells both contain ribosomes, a Golgi apparatus, and a
nucleus, however, they still have many structural differences. Which structures do plant cells
contain that animal cells do not?
A. Plant cells contain a nuclei and cell walls
B. Plant cells contain cell walls and chloroplasts
C. Plant cells contain chloroplasts and mitochondria
D. Plant cells contain a mitochondria and a nuclei
14. View the photo of the egg below:
Eggs are made of three main parts: the outer covering (shell), the yoke (yellow), and a clear
liquid. Which plant cell part is most like the clear liquid found in the egg
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Cytoplasm
15. An organelle is one of several structures with specialized functions, suspended in the
cytoplasm of a eukaryotic cell. The body is composed of various organs that perform the
functions. Which of the following best describes organelles?
A. Only certain kinds of cells have organelles
B. There is only one type of organelle
C. Organelles are not found in plant cells
D. Organelles allow a cell to live, grow, and reproduce
16. In a multicellular organism, such as a fish, which of these items is composed of all the
others?
A. Tissues
B. Organs
C. Cell structures
D. Organ systems
17. A student has four microscope slides of cells from four different organisms. He must
match the slides of cells with the correct organism tissues listed in the table below.
Slide
Cell
P
Fish Skin
Q
Alligator Hide
R
Plant Leaf
S
Tadpole Skin
He observes chloroplasts in the cells on one of the slides. Which slide is he observing?
A. Slide P
B. Slide Q
C. Slide R
D. Slide S
18. Which of the following is not made of cells?
A. Algae
B. Cat
C. Salt
D. Geranium
19. Organs are made up of different kinds of tissues working together. An organ system is a
group of organs that work together.
Which is an organ that is part of the circulatory system?
A. Plasma
B. Heart
C. Blood
D. Brain
20. Use the diagram of the cell below to answer question 20.
What is the responsibility of the structure C?
A. To store food, water, and waste
B. To allow substances to enter and leave the cell
C. To control the activities of the cell
D. To produce energy for the cell
21. The cell is the basic structural and functional unit of all known living organisms. It is the
smallest unit of life that is classified as a living thing, and is often called the building block of
life. Cells can combine together to perform specific functions. Tissues and organs are
composed of cells and they also perform specific functions. What is the relationship between
tissues and organs?
A. Organs are made from one type of tissue
B. Tissues are made from one type of organ
C. Tissues are made from different types of organs
D. Organs are made from different types of tissues
22. Geologists classify rocks into three categories: igneous, sedimentary, and metamorphic.
How are these three rock groups classified?
A. The rocks are classified according to where they form
B. The rocks are classified according to when they form
C. The rocks are classified according to the size and shape of the grains within the rock
D. The rocks are classified according to how they form
23. If you pick up a rock you will notice that is has many different properties. Rock can vary by
color and hardness as well as by other characteristics. Granite is a rock with a mixture of
feldspar and quartz crystals. Granite may also contain mica, pyroxene and other minerals as
part of the rock.
Which of the statements best describes what makes up rock?
A. Rocks are always made of granite
B. Rocks are composed of one or more minerals
C. Rocks are always made of quartz and feldspar
D. Rocks are always made of exactly three minerals
24. There are three types of ____________ rocks: clastic, chemical, and organic.
A. Igneous
B. Metamorphic
C. Sedimentary
D. Granite
25. Erosion and weathering can both cause changes to the surface of the Earth. Which of the
following happens ONLY because of erosion and NOT because of weathering?
A. Rocks form deep underground
B. Rocks become smooth and round
C. Rocks are broken apart into small pieces
D. Rocks are moved from one place to another
26. Minerals are naturally occurring substances made of solid materials. Different properties
help you to differentiate between the different types of minerals. The streak test is an example
of how a mineral can be identified. Many minerals will leave a colored streak when rubbed
against the back of an unglazed ceramic tile.
How does a streak test help identify different minerals?
A. Minerals that leave a clear streak are usually quartz
B. If the mineral scratches the tile, then it is harder than the tile
C. Sometimes the streak is a different color that the mineral’s surface color
D. The streak left by a mineral will reveal the way it reflects light
27. A mineral’s hardness can help identify it. To find the hardness of a mineral, scientists will
scratch objects onto the mineral to see if a scratch is left. The Mohs Scale of Hardness gives
the hardness a number depending on what scratches a mineral. Another example of a
property used by scientists to identify minerals is luster. Luster is the amount of light a
mineral reflects; it describes how shiny a mineral appears. A scientist determined that a
mineral was metallic by the way it reflected light.
What property would that mineral show that helps the scientist classify its luster as metallic?
A. The mineral is very dull and does not reflect a lot of light
B. The mineral does not get scratched by any materials and is very low on the Mohs Scale of
Hardness
C. The mineral is very shiny and reflects a lot of light
D. The mineral gets scratched by all objects and is very high on the Mohs Scale of Hardness.
28. Scientists use these properties to determine a mineral’s identity?
A.
B.
C.
D.
Odor and shape
Color and streak
Size and weight
Volume and hardness
29. Which is a component of soil that is composed of organic matter?
A.
B.
C.
D.
Humus
Subsoil
Soil Horizon
Parent Material
30. Use the Mohs Scale of Hardness below to answer question 30.
Mohs Scale of Hardness
Mineral
Hardness
Talc
1
Gypsum
2
Calcite
3
Mineral
Hardness
Fluorite
4
Apatite
5
Feldspar
6
Quartz
7
Topaz
8
Corundum
9
Diamond
10
The Mohs Scale of Hardness is used to help scientists determine how hard a given mineral is.
According to the Mohs Scale, which of the statements is true?
A. Only Talc will scratch the Gypsum
B. Topaz and Diamond will scratch the Quartz
C. Amethyst will scratch Diamond
D. Calcite will scratch Talc and Corundum
31. The word coal means “mineral of fossilized carbon.” It is black or brownish-black and has
many uses. Coal is primarily used as a fuel to produce electricity and heat through
combustion. It is usually found underground, compressed in a layer between other types of
rock. What rock-forming process produces coal?
A. Crystallization from melted rock
B. Formation of Sediment from weathering
C. Deposition and burial of dead plant matter
D. Eruption of volcanic ash followed by settling in a layer
32. Use the following information and chart to answer question 32.
Igneous rock forms when hot, molten rock cools and hardens. This can happen either deep
within the Earth (magma) or on the Earth’s surface (lava). Igneous rocks formed from magma
will have different properties than the igneous rocks formed from lava. Magma cools slowly
while lava cools quickly.
A rock collector found four igneous rocks. The rocks had mineral crystals with the following
sizes:
Rock
Minerals Crystal Size
A
2 mm
B
7 mm
C
4.5 mm
D
0.5 mm
Which rock is most likely to be formed from lava?
A. Rock A
B. Rock B
C. Rock C
D. Rock D
33. Rocks, minerals, and soil are nonrenewable geologic resources. They have many practical
uses such as jewelry, energy, tools, and construction. Why is it important to manage the uses
of our rocks, minerals, and soil?
A. Rocks, minerals, and soil can be used for any purpose
B. Rocks, minerals, and soil are renewable and will not run out
C. Rocks, minerals, and soil may run out
D. Rocks, minerals, and soil can be used at any geographical location
34. In which Earth layer do most grasses grow?
A. Topsoil
B. Solid rock
C. Bedrock
D. Subsoil
35. Students completed an activity during science class. The activity used red and blue
crayons to represent the formation of one of the three types of rocks. The chart below outlines
the activity.
Step
Activity
1
Remove the paper wrapping from each crayon
2
Break up the red and blue crayons into tiny pieces
3
Put the pieces in your hand and squeeze them together
to form a red and blue speckled slab.
In this activity, what do the red and blue crayons represent?
A.
B.
C.
D.
Luster
Igneous Rocks
Sediments
Fossils
36. A volcano erupted in the Atlantic Ocean and formed a new island over time. The new
island is mainly made of which type of rock?
A.
B.
C.
D.
Igneous
Limestone
Metamorphic
Sedimentary
37. Carbon Dioxide mixing with water creates a weak acid called carbonic acid. Carbonic acid
works to break down rock. The process of breaking down rock into smaller pieces is called:
A.
B.
C.
D.
Weathering
Constructive Forces
Glacial Movement
Destructive Forces
38. Use the diagram below to answer question 38.
This sample shows the different layers of soil. The top layer has organic material growing in it.
The second layer has the roots of small plants throughout it. The third layer is made mostly of
clay, weathered rock, and minerals. The fourth layer is made of large pieces of rock. Which
horizon is this second layer most likely classified as?
A.
B.
C.
D.
O horizon
A horizon
B horizon
C horizon
39. In which layer of soil is humus located?
A.
B.
C.
D.
Topsoil
Silt
Subsoil
Bedrock
40. Over millions of years, rocks are formed and change form.
What process transforms limestone into marble?
A. Crystals in the limestone become melded together due to heat and pressure
B. Lava flows cover the limestone and slowly cool
C. Weathering causes limestone to disintegrate; then it reforms by way of sedimentation
D. Dead plant material becomes deeply buried under shells and marine mud
41. The diagram below show the rock cycle. Two of the three major rock types are represented
by A and C. Label A and C as the rock type AND Letter B and D as processes. **Write the
answers by the letters** (4 points)
42. There are 3 parts to the cell theory. Fill in the missing parts. (2 points)
A. ______________________________________________________________________________
B. All organisms are composed of one or more cells
C. ______________________________________________________________________________
43. Suppose you accidentally misplace the labels you made for your slides of plant cells and
animal cells. Explain how you can tell which is which. (2 points)
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