Free Printable Biogeochemical Cycle Review

Worksheets

Biogeochemical Cycle Review

Total questions: 17

Worksheet time: 17mins

Name

Class

Date

The repeated movement of water between Earth’s surface and the atmosphere is called

the water cycle.

the condensation cycle.

precipitation.

evaporation.

What is happening to water at D in Figure 3–3?

Water is falling to the ground as precipitation.

Water is evaporating from the ocean.

Water is being taken up by plants through transpiration.

Water is seeping into the ground to become groundwater.

Nitrogen fixation is carried out primarily by

humans.

plants.

bacteria.

consumers.

Organisms need nutrients in order to

utilize hydrogen and oxygen.

carry out essential life functions.

recycle chemical compounds.

carry out nitrogen fixation.

The water cycle, carbon cycle, nitrogen cycle, and phosphorus cycles are all examples of

Biochemical Cycles

Biogeochemical Cycles

Chemical Cycles

Biological Cycles

What is the most abundant gas in the atmosphere?

Nitrogen

Oxygen

Helium

Carbon Dioxide

What is one way that carbon can be removed from the atmosphere?

combustion

cellular respiration

photosynthesis

decomposition

What happens in nitrification or nitrogen fixation?

Nitrogen in the soil is broken down and released into the atmosphere.

Nitrogen in the atmosphere is converted to a usable form in the soil.

What happens in denitrification?

Nitrogen in the soil is broken down and released into the atmosphere.

Nitrogen in the atmosphere is converted to a usable form in the soil.

10.

Identify the cycle pictured.

water cycle

carbon cycle

nitrogen cycle

phosphorus cycle

11.

What cycle is shown in the diagram?

phosphorus cycle

water cycle

carbon cycle

nitrogen cycle

12.

Identify the cycle pictured.

water cycle

carbon cycle

nitrogen cycle

phosphorus cycle

13.

Identify the cycle pictured.

water cycle

carbon cycle

nitrogen cycle

phosphorus cycle

14.

Which nutrient is not cycled through the atmosphere and stays only on ground level?

carbon

nitrogen

phosphorus

water

15.

Animals get the most of the nitrogen they need

by consuming plants or other animals.

by breathing in atmospheric nitrogen.

directly from bacteria in the soil.

from the process of denitrification.

16.

Which of the following is true about phosphorus?

Phosphorus is found primarily in the atmosphere.

Phosphorus is an important component of RNA and DNA.

Phosphorus can be “fixed” by lightning.

Phosphorus is released into the air when animals exhale carbon dioxide.

17.

Why are algae so important in aquatic ecosystems?

They are primary producers

Break down dead organisms

Convert inorganic nitrogen into organic nitrates

recycle chemical compounds

Reset

Biogeochemical Cycle Review

Total questions: 17

Worksheet time: 17mins

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