Lesson Worksheet: Cycles of Matter: The Oxygen-Carbon Cycle Science • 5th Grade
In this worksheet, we will practice identifying and describing what happens in the oxygen-carbon cycle.
Which of the following groups of organisms is responsible for releasing the most oxygen into the atmosphere?
Which of these processes uses up oxygen?
Fill in the blank: Living things release carbon dioxide. Some processes, such as , also release carbon dioxide.
- Bburning fossil fuels
Emma and Daniel are talking about the oxygen–carbon cycle. Who is correct?
Why do we often group the oxygen and carbon cycles together?
- ABecause these are the only two cycles of matter that exist
- BBecause these two cycles depend on each other
- CBecause oxygen and carbon dioxide are the only important gases in the atmosphere
Fill in the blank: , such as plants and the air, interact with each other within ecosystems. Through these interactions, matter is cycled.
- ABiotic and abiotic factors
- BAbiotic factors
- CBiotic factors
Complete the following: The oxygen–carbon cycle is the process where oxygen gas and carbon dioxide gas .
- Acirculate through the atmosphere
- Bare taken in by living organisms
- Care produced by consumers
Fill in the blanks: Carbon dioxide from the air is taken in by grass and the carbon is to make sugars. The carbon is transferred to animals like cows when they .
- Areleased, eat the grass
- Bused, eat the grass
- Creleased, get rid of waste
- Dused, get rid of waste
Fill in the blanks: Sheep eat grass that contains carbon. This ends up in the gas released by the sheep when they breathe.
- Acarbon, carbon dioxide
- Bcarbon, oxygen
- Cgrass, carbon
- Dgrass, oxygen
Fill in the blank: This tree branch is decaying. It is being broken down by that release the carbon stored in the branch as carbon dioxide gas.