Download 7th Grade Science: Semester Review – Spring 2017 Part II: Due

Name:
Period:
(Academic)
th
7 Grade Science: Semester Review – Spring 2017 Part II: Due Date_____________________
The final exam will cover the following topics:
Heredity and Genetics
Natural Selection, Modern Genetics, Classification &
Dichotomous Keys
Survival and Adaptations
Matter & Energy Cycles (Ecology)
Biomes and Water Ecosystems (and Succession)
Weathering, Erosion, Deposition, and Catastrophic Events
Texas Ecoregions, and Water
Space, The Final Frontier
Two important notes before we begin:
 Not all of this information is in your book. Class notes will be the best place to find these answers.
 Vocabulary for Part II units is on the last page
Matter and Energy Cycles (Ecology)
1. Fill in the organizational chart from organism to ecosystem.
Organism 

 Ecosystem
2. Explain the relationship between biotic factors, abiotic factors, and an ecosystem.
3. Give two examples of:
Biotic factors
Abiotic factors
4. _________________is the study of the relationship between organisms and their environment.
5. A
shows the way energy is transferred through a community by showing one feeding
relationship.
6. A
7. An
shows all of the feeding relationships in an ecosystem.
shows the flow of energy through an ecosystem, showing the loss of
energy from one consumer level to the next.
8. Draw a food chain using the following organisms: grass; hawk; mouse; snake
9. What would happen to the food chain you just drew if the herbivore was killed? Specifically answer what
would happen to the producer, and what would happen to the carnivore.
10. Draw an energy pyramid and label the levels. Use these labels: Carnivore (secondary consumer); Herbivore
(primary consumer); Producer; Top carnivore (tertiary consumer)
1
11. Which of the levels in your energy pyramid would have the smallest population? Why?
______________________________
12. If the producer had 100,000 Kc of available energy, how many Kc of energy would the primary consumer
receive of the original energy?___________________________
13. Organisms that return nutrients to the soil for plants to use are called
.
14. How does a cow receive the energy it needs for life activities? Please use the word photosynthesis in your
explanation.
15. What type of energy is stored in food?
Where did this energy
*originally* come from?
16. What type of energy is stored in a glucose molecule?
17. If you eat a piece of bread, what energy transformation will take place in the mitochondria of your cells?
to
and
18. Is any energy lost during an energy transformation, such as the one above, or from kinetic energy to potential
energy?
(Hint: Here’s the law: “Energy
, only changed in form.”)
19. What is considered to be food for plants?
20. In the mitochondria of all living cells, oxygen and glucose combine in a process known as
and the products of this chemical reaction are
and
_____,
.
21. Label the diagram using the following words:
CO2; Cellular respiration; Glucose; Oxygen; Photosynthesis; H2O
22. Please fill in the following table:
Reactants:
Products:
a. Photosynthesis:
_____________
_____________
b. Cellular respiration:
_____________
_____________
23. In the Carbon Cycle, what two processes return carbon to the air?_______________and
______
24. The Water Cycle, the Carbon Cycle, and the Nitrogen Cycle all show the cycling of what?_______________
25. Nitrogen is an important element in living organisms because it is necessary to make what macromolecule?
(Hint: It is one of the food energy nutrients.)
2
26. Composting uses the biological process of ________________________________, so that matter can be used
as fertilizer. What two elements did we specifically need to include in our compost mixture? (Hint: Think
‘browns’ and ‘greens’.)
27. Besides the two elements from the previous question, a healthy compost bin also requires these two things
to work successfully.
28. _________________________________________is the total mass of living organisms in a certain area.
29. In cellular respiration, the carbon in the molecules of carbon dioxide comes from where?
Biomes and Water Ecosystems (and Succession)
30. ________________________and
determine which types of organisms live in a
land biome. (These are the limiting factors for land biomes.)
31. __________________________and
determine which types of organisms live in
water ecosystems. (These are the limiting factors for water ecosystems.)
32. Know the “story” (climate, plants, and animals) of each of the biomes and the water ecosystems. (Attach
your Biomes chart to this review.)
33. Which biome has the greatest biodiversity?
34. Climate is composed of
35. The
and
.
is the narrow layer near the Earth’s surface where life exists.
41.______________________________are the basis for food chains in the oceans.
42.____________________is the series of predictable changes that occur in a community over time.
43._____________________is the change that occurs in an area where no ecosystem had existed. (It starts from
bare rock.) Example:
44. _________________________is the change that occurs after a disturbance in an ecosystem. (It starts with
soil already in place.) Example:
45. The first living things to develop in a previously lifeless area are
.
46. Biodiversity is affected by what three things?
a.
b.
c.
47. How does the biodiversity found in an area affect that area’s sustainability?
48. When an ecosystem contains many different species, there are usually a high number of links in its food web.
What happens to the ecosystem if you remove one link in the food web?
3
49. What tool would you use to sample a microhabitat to find out the number and variety of different species in a
given area?
50. Name four ways in which humans can cause the loss of species or disruption of biodiversity on Earth.
a.
c.
b.
d.
51. The measure of an ecosystem’s ability to withstand change and remain diverse and productive over time is
known as
.
Space, The Final Frontier
Vocabulary words are on the very last page of your Semester Review 
52. Earth is sometimes called the Goldilocks Planet because we have all the necessary elements to sustain life.
What are the key elements? (p 623-626 lists the 6 things in bold red font!)
53. When an astronaut is exploring space, what does the astronaut’s vehicle or spacesuit provide for them that
keeps them alive? (p. 639)
54. What are 3 conditions affecting the human body in space? (p. 638)
Matter and Energy
Ecology
Organism
Species
Populations
Community
Environment
Ecosystem
Abiotic factors
Biotic factors
Energy
Transform
Transfer
Radiant energy
Chemical energy
Thermal energy
Potential energy
Kinetic energy
Autotroph
Heterotroph
Photosynthesis
Cellular respiration
Chlorophyll
Glucose
Habitat
Niche
Producer
Consumer
Primary consumer
Secondary
consumer
Herbivore
Carnivore
Omnivores
Scavengers
Decomposers
Food chain
Food web
Energy pyramid
Biomass
Decomposition
Carbon cycle
Water cycle
Nitrogen cycle
Composting
Biosphere
Biosphere
Biome
Climate
Precipitation
Climatogram
Adaptation
Permafrost
Deciduous trees
Conifers
Plankton Estuary
Brackish water
Intertidal zone
Neritic zone
Open sea zone
Photosynthetic
zone
Abyss
Fast moving bodies
of water
Slow moving bodies
of water
Habitat
Microhabitat
QuadratBiodiversity
Sustainability
Equilibrium
Habitat loss
Poaching
Pollution
Native species
Exotic species
Succession
Primary succession
Pioneer species
Climax community
Secondary
succession
Space
Atmosphere – Mixture of gasses that surround a planet.
Gravity the force of attraction between objects due to their masses and distances between them
Launch - the process of setting a rocket or spacecraft in motion
Orbit – the path a body follows as it travels around another body in space
Ozone – a molecule that is made up of three oxygen atoms
Solar system – a collection of large and small bodies that orbit a central star
Spacecraft – a crewed of unscrewed space vehicle designed to be placed in orbit around earth or a path in space.
Ultraviolet radiation- A type of solar radiation that can harm life
Weightlessness - the apparent weight of an object that is freely falling due to gravity
4