Lesson #2: The Nitrogen Cycle

Remember that a reservoir is a storage place in a nutrient cycle where the nutrient will remain for some time. List three reservoirs found in the nitrogen cycle.

If nitrogen from the atmosphere is continually being used, what keeps the atmosphere

from running out of nitrogen?

• More nitrogen is made in the sun.

• Extra nitrogen is stored in the clouds.

• As dead organisms decompose, the nitrogen from their bodies is converted back into

  nitrogen gas.

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NGSS.MS-LS2-3

The majority of the world's nitrogen is found in a (solid / liquid / gaseous) state.

• solid

• liquid

• gaseous

If nitrogen from the atmosphere is continually being used, what keeps the atmosphere

from running out of nitrogen?

• More nitrogen is made in the sun.

• Extra nitrogen is stored in the clouds.

• As dead organisms decompose, the nitrogen from their bodies is converted back into

  nitrogen gas.

Tags

NGSS.MS-LS2-3

True/False: Nitrogen Fixation can only be performed by animals.

• true

• false

True/False: The ocean is the largest reservoir in the water cycle.

• False
• True

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NGSS.MS-ESS2-4

For the activity listed, select the kind of change that is taking place.

an ice cube melting

• physical

• chemical

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NGSS.MS-PS1-4

For the activity listed, select the kind of change that is taking place.

a cake baking

• physical

• chemical

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

For the activity listed, select the kind of change that is taking place.

paper being cut

• physical

• chemical

Which of the following is not true of blizzards?

• Strong winds move snow on the ground and falling snow.

• They occur because of differences in air pressure.

• They happen only in regions near the North Pole

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NGSS.MS-ESS2-5

NGSS.MS-ESS2-6