Section A

Question 1

What’s the difference between weather and climate

Answer 1

Weather - refers to the specific atmospheric at a given location

Climate - the average weather that occurs in an area over a period of time

Question 2

What are some things the weather refers to

Answer 2

Temperature
Air pressure
Cloud cover
Humidity
Precipitation (rain,snow etc)

Question 3

What two things are climate change determined by

Answer 3

Anecdotal evidence
Scientific evidence

Question 4

What is anecdotal evidence

Answer 4

Reports or interpretations from people about events that occur

Question 5

What is scientific evidence

Answer 5

Data collected by scientists, interpretation of data to look at general trends not individual events

Question 6

What is biosphere and what does it mean

Answer 6

Biosphere means the “living globe”

It’s a thin layer around the earth that supports life

Question 7

What 3 layers is the biosphere composed of

Answer 7

Atmosphere
Lithosphere
Hydrosphere

Question 8

What is the atmosphere and what gases is it composed of
What percentage of sun does it absorb?

Answer 8

All of the gases surrounding the earth also absorbs 20% of the suns energy

78% nitrogen - needed for plant growth
21% oxygen - needed by organisms, maintained by photosynthesis

Question 9

How many layers of the atmosphere are there and what are they determined by

Answer 9

Determined by average air temperature and altitude

Question 10

What is the ozone layer and formula

Answer 10

An inorganic molecule found in the stratosphere

Absorbs UV radiation from the sun

O(3) + UV radiation = O(2) + O

Question 11

What are the 2 reasons the ozone layer is depleting

Answer 11

1. Reaction with chlorofluorocarbons (man-made chemicals)
2. Natural cycles in the atmosphere