7th Grade Science Study Guide
1st 9 weeks Exam- Unit1 Safety, Unit 2 Flow of Energy
and Unit 3 Work and Force on Living Things
Just as a map or GPS guides you to a location, use this
paper as a guide to studying this unit.
Part 1: Vocabulary
Know what these words mean and how to spell them:
Solar Energy Geotropism
Work
Chlorophyll
Compost
Consumer
Decomposer
Decomposition
Energy
Stimuli
Glucose
Herbivore
Omnivore
Organelle
Simple Machine Producer
Food Chain
Energy
Pyramid
Photosynthesis Wedge
Recycling
Respiration
SI Unit
Trophic Level
Chemical
Energy
Radiant
Energy
10% rule
Food Web
Joule
Newton
Newton-meter
Part II: Knowledge and Skills
1
The following sentences are what you must know about
the flow of energy in an ecosystem and be able to
demonstrate your knowledge on the unit test this year
and on the STAARs exam next year:
1. Practice predicting/identifying safety equipment you
would use for a lab.
1. Practice identifying the steps of a lab procedure.
I.e. wait for teacher instructions, then read lab
instructions, etc.
2. Where does life on Earth get its energy?
3. Explain what life on Earth would be like without
photosynthesis.
4. Practice identifying lab equipment needed for a lab
or lab extension.
5. Identify the type and source of energy that starts
the photosynthesis process.
6. Explain what happens to the solar radiation in
plants.
7. Name the ingredients needed for photosynthesis to
take place.
8. Identify which type of organism undergoes
photosynthesis.
9. Practice identifying the process of photosynthesis
from images.
10. Be able to write the chemical equation for
photosynthesis.
11. Explain how matter cycles through living systems.
2
12. Be able to draw and label a food chain, food web,
and energy pyramid.
13. What do producer’s give us?
14. What do the arrows in a food chain and food web
point to?
15. Identify the trophic level that has the most energy
and explain why.
16. Practice identifying producers, consumers, and
decomposers in food webs from different biomes.
17. Practice converting food webs into energy pyramids
correctly and label both. Be able to draw both.
18. Know how much energy is used at each level of
energy pyramid.
19. Explain the 10% Rule.
20. Practice predicting what will happen in energy
pyramid when one level of energy pyramid changes.
21. Explain what happens to the energy in matter that’s
been placed in a compost bin.
22. Be able to draw and label the flow of energy in a
compost bin.
23. Explain what is happening in a compost bin/pile.
24. Explain why decomposers are important to the
ecosystem.
25. Be able to identify situations where work is being
done.
26. What is the formula for Work?
3
27. Be able to calculate work using the formula W=Fxd
28. List and illustrate forces in living things.
29. How do forces affect motion in living things?
30. Be able to calculate Force when given the work and
distance.
31. Be able to calculate distance when given the work
and force.
4