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The Nitrogen Cycle

The Nitrogen Cycle

Assessment

Presentation

Science

7th - 12th Grade

Easy

NGSS
MS-LS2-3, MS-LS2-1, MS-PS1-1

+1

Standards-aligned

Created by

Theresa Brown

Used 608+ times

FREE Resource

12 Slides • 9 Questions

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Multiple Choice

Organisms need nitrogen in order to...

1

To breathe

2

To obtain water for growth

3

To build proteins & DNA

4

To regulate temperature

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7

Multiple Choice

Gas that makes up 78% of our atmosphere.

1

Oxygen

2

Nitrogen

3

Hydrogen

4

Carbon Dioxide

8

Multiple Choice

Question image

Based on the picture, what is the chemical formula for atmospheric nitrogen?

1

N

2

N2

3

NH3

4

NO3

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11

Multiple Choice

Plants and animals cannot use nitrogen directly from the air.
1
True
2
False

12

Multiple Choice

Which of these nitrogen cycle processes converts atmospheric nitrogen to a soil form of nitrogen that is usable by plants?

1

nitrogen fixation

2

nitrification

3

denitrification

4

ammonification

13

Multiple Choice

Bacteria fix nitrogen from the atmosphere into a form plants can use.

1

True

2

False

14

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16

Multiple Choice

How nitrogen is "fixed" into useable form for plants...
1
through action of bacteria only
2
through lightning only
3
through action of bacteria & lightning
4
through photosynthesis

17

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18

Multiple Choice

How do animals get the nitrogen they need?

1

From the air they breathe

2

From the water they drink

3

From the food they eat

4

From the sun

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21

Multiple Choice

How does fertilizer affect the ecosystem?

1

the bacteria reproduce quicker

2

causes increase in rain, thereby increasing flooding of ponds and lakes

3

create large algae blooms in the water

4

cause the nitrogen fixing bacteria in the soil to be more productive

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