Atmosphere and the carbon cycle

Question 1

Layers of the atmosphere

Answer 1

1: Troposphere
2: Stratosphere
3: Mesosphere
4:Thermosphere
5: Exosphere

Question 2

Troposphere

Answer 2

Contains the breathable atmosphere (15 km upwards from sea level)

Question 3

Stratosphere

Answer 3

Contains the Ozone layer (blocks UV rays)

Question 4

Photosynthesis

Answer 4

Carbon dioxide +Water –Light & Chlorophyll– Glucose + Oxygen

Question 5

Aerobic respiration

Answer 5

helps organisms breakdown breakdown glucose to make energy
Glucose + Oxygen — Carbon dioxide + water + energy

Question 6

Carbon Oxygen Cycle

Answer 6

Carbon dioxide is used in the process of photosynthesis and returned to the atmosphere in respiration
The carbon is stored as part of glucose and starch. It then moves up the food chain when animals eat plants
The balance of oxygen and carbon dioxide is maintained by organisms undertaking photosynthesis and respiration

Question 7

Human Impact on the carbon cycle

Answer 7

Burning fossil fuels – releases CO2 into the atmosphere increasing CO2 levels in the atmosphere
Deforestation – reduces amount of CO2 absorbed by trees (less photosynthesis)  increasing the CO2 in the atmosphere