Free Printable Carbon, Oxygen, Water Cycle practice assign

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Carbon, Oxygen, Water Cycle practice assign - 2nd

Total questions: 14

Worksheet time: 12mins

Name

Class

Date

________________ could increase the amount of oxygen in the air.

Building more houses

Burning more oil

Paving more streets

Planting more trees

How plants and animals interact in the carbon dioxide/oxygen cycle?

Plants release oxygen into the atmosphere which animals inhale. Animals exhale carbon dioxide into the atmosphere which is taken in by plants.

Animals release oxygen into the atmosphere which plants inhale. Plants release carbon dioxide into the atmosphere which is breath in by animals.

Plants and animals don't need each other.

Plants and animals take in oxygen and release carbon dioxide.

Animals and plants use substances that cycle through the environment. Which substance is needed by plants to survive and is released into the environment by animals?

oxygen

sugar

salt

carbon dioxide

All of the following put more CO2 into the air EXCEPT...

photosynthesis

your breathing

the process of decomposition

combustion

When humans burn fossil fuels, most of the carbon quickly enters the atmosphere as this gas:

Water

Carbon Dioxide

Oxygen

Water

Which one of these does not add CO2 to the atmosphere?

cooking with gas

planting trees

burning wood

riding in a bus

Combustion is another word for _______________.

a train

a bus

a dog

burning

How do living organisms return carbon to the atmosphere in the carbon cycle?

respiration and photosynthesis

decomposition and respiration

What is the water cycle?

the 3 forms of water

the movement of water on, above, or below the surface of the Earth

when water melts

when clouds form

10.

What part of the water cycle does this picture show?

condensation

precipitation

evaporation

11.

Which of these is an example of precipitation?

snow

air

clouds

vapor

12.

Which is the opposite of condensation?

runoff

evaporation

precipitation

transpiration

13.

Which best explains why runoff is important?

It returns water to other locations on Earth

It increases the chance of flooding

It makes evaporation occur faster

It increases condensation

14.

What is evaporation?

The part of the water cycle when the sun heats up water, turning it from a liquid into water vapor or steam. It rises from the ground into the air.

The part of the water cycle when the water vapor in the air gets cold. The water turns back into a liquid and forms clouds.

The part of the water cycle when clouds get heavy and can no longer hold the liquid water. This causes the water to fall from the sky to the earth as rain, snow, sleet, or hail.

100 %

Carbon, Oxygen, Water Cycle practice assign - 2nd

Total questions: 14

Worksheet time: 12mins

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