Name: ____________________________________ Date: _____________
Oxygen Cycle Homework! Due Thursday, Sept 13
Directions: Put into your own words!
1. What is the formula for photosynthesis?
2. What is the formula for respiration?
3. Please circle the products of photosynthesis in question #1.
4. Please circle the reactants of respiration in question #2.
5. What do you notice about what you circled in questions #3 and #4?
6. What is Law of Conservation of Mass and why is it important?
7. One important use of Oxygen is that:
a. It is used by plants for energy
b. It is used by heterotrophs to do respiration of glucose
c. It is the waste product of respiration
d. It is necessary for autotrophs to take in from the environment.
Please label the diagram below for #8 and #9 as being either respiration or photosynthesis.
8.
Sugar
CO2
and
Oxygen
9.
10. Photosynthesis
a. Is when plants eat other organisms to create energy
b. Transform solar energy into usable energy
c. Is decomposition of oxygen done by plants
d. Consume other producers
For questions #11 and #12, circle the right answer:
11. Autotrophs / Heterotrophs go through respiration
12. Autotrophs / Heterotrophs go through photosynthesis
13. Which of the following is NOT true about matter in the biosphere?
a. Matter is recycled in the biosphere
b. Biogeochemical cycles transform and reuse molecules.
c. Biological systems use up matter as they change it.
d. Water and nutrients pass between organisms and the environment.
I can: 1.8
Period: ____
14. How has the total amount of oxygen changed since the beginning of time?
a. The amount of oxygen has increased
b. The amount of oxygen has decreased
c. The amount of oxygen has stayed the same
d. The amount of oxygen is constantly changing
15. Why is that?
16. Where does the energy that drives the oxygen cycle come from?
a. The energy comes from evaporation
b. The energy comes from the sun
c. The energy comes from oxygen
d. The energy comes from minerals in the soil
17. The water that was around when dinosaurs roamed the Earth…
a. was destroyed a long time ago
b. is about half gone
c. is the same water we use today
d. would be really dirty and nasty if it were still around
18. Finish drawing the oxygen cycle in this picture and label when photosynthesis is happening and
when respiration is happing. Also indicate which one is an autotroph and heterotroph.
19. If you are baking a cookie, what are the reactants?
20. If you are baking a cookie, what are the products?
21. Next to this leaf, please show the reactants and products of photosynthesis and indicate which side
is the products and which side is the reactants:
22. Biogeochemical cycles 23. Condensation 24. Transpiration 25. Evaporation 26. Precipitation Directions: Fill in the blanks below:
1. What causes the water cycle to go?
2. What process is very similar to evaporation?
3. When water from lakes goes into the air, what process is this called?
4. After precipitation reaches the ground, what is the water called on its way to a lake or river?
5. When it snows, what part of the water cycle is this?
6. What part of the water cycle is it when water leaves plants and goes into the air as water vapor?
7. When water vapor changes into clouds, what process is this called?
8. Name two different types of precipitation.
Directions: Use the words below to label the blanks in the water cycle.
Use these words to fill in the picture above:
A.
B.
C.
D.
E.
F.
Runoff
Transpiration
Evaporation
Condensation (you’ll use this twice)
Precipitation
Lake
A. Transpiration
B. Precipitation
C. Condensation
Match the Following Definitions with the correct word:
D. Evaporation
1. _________ This is the process where water is taken from the ground by a
plant and returned to the environment.
2. _________ This is the process where water turns from a liquid into a gas.
3. _________ This is the process where water turns from a gas into a liquid.
4. _________ Snow, sleet, hail and rain are examples of this process.
5. What is the Law of Conservation of Mass and why is it important?
6. What is the difference between evaporation and transpiration?
7. What are the biogeological cycles that you know of in nature?
8. Label each level of the pyramid with the correct amount of energy
0.07 kcal
35.4 kcal
800 kcal
5.1 kcal
3705 kcal
37,459.6 kcal
9. At which level of the food web is the supply of energy the greatest?