Cycles

Question 1

What are the three cycles?

Answer 1

water, carbon, nitrogen

Question 2

What are the 5 steps of carbon cycle?

Answer 2

fossilization, combustion, respiration, photosynthesis, feeding and assimilation

Question 2

What is fossilization?

Answer 2

when dead organisms do not decay fully, fossil fuel is formed

Question 3

What is combustion?

Answer 3

fossil fuels burn and release carbon dioxide into their air

Question 4

What is photosynthesis?

Answer 4

fixes the carbon atoms in carbon dioxide into organic compounds

Question 5

What is feeding and assimilation?

Answer 5

pass the carbon atoms inside organic compounds along food chains

Question 6

What is respiration?

Answer 6

organic compounds are broken down to release energy and produces inorganic carbon dioxide

Question 7

What is nitrogen cycle?

Answer 7

processes needed for organisms to be able to use atomispheric nitrogen

Question 8

What are the four process of nitrogen cycle?

Answer 8

nitrogen fixation, ammonification, nitrification, denitrification

Question 9

What is nitrogen fixation?

Answer 9

nitrogen gets fixed when combined with oxygen or hydrogen

Question 10

What are the three ways of nitrogen fixation?

Answer 10

atmospheric fixation, industrial fixation, biological fixation

Question 11

What are the steps for atmospheric fixation?

Answer 11

nitrogen combines with oxygen - nitrogen oxides form - nitrogen oxides dissolve in rain and produce nitrates - plants use nitrates

Question 11

What are the steps for atmospheric fixation?

Answer 11

nitrogen combines with oxygen - nitrogen oxides form - nitrogen oxides dissolve in rain and produce nitrates - plants use nitrates

Question 12

What is industrial fixation?

Answer 12

the ability for atomospheric nitrogen and hydrogen to form ammonia

Question 13

What is needed for industrial fixation?

Answer 13

great pressure, temperature at 600 degrees C, and use of a catalyst

Question 14

What is biological fixation?

Answer 14

free-living bacteria/nitrogen-fixing bacteria have the ability to combine atmospheric nitrogen with hydrogen to make ammonia

Question 15

What are the two important processes needed for cycling nitrogen through the ecosystem?

Answer 15

feeding and assimilation: passing nitrogen already in organic compounds along food chains
decompostion: decomposers produce ammonia from proteins, DNA, and vitamins.

Question 16

What is ammonification?

Answer 16

free living nitrogen fixing bacteria have the ability to convert nitrogen gas into ammonia.

Question 17

What is nitrification?

Answer 17

when ammonia from ammonification is oxidized to nitrite, then to nitrate

Question 18

What is denitrification?

Answer 18

uses the nitrate made in nitrification and convrets it into nitrogen gas

Question 19

What are the 5 steps in water cycle?

Answer 19

evaporation, transpiration, condensation, precipitation, runoff

Question 20

What is evaporation?

Answer 20

when the sun heats up the water and it evaporates into water vapour

Question 21

What is transpiration?

Answer 21

when water from the plants in the soil give off water vapour which is taken up the atmosphere to the clouds

Question 22

What is condensation?

Answer 22

when water vapour from transpiration and evaporation condenses into clouds by cooler temperatures

Question 23

What is precipitation?

Answer 23

when the water vapour and cloud particles get too heavy so they fall as liquid rain, snow or hail.

Question 24

What is runoff?

Answer 24

when the water from precipitation falls down to the land and flows down to the ocean