hazardous earth - global circulation

Question 1

give three reasons as to why it is hotter at the equator

Answer 1

• the sun’s rays are shorter at the equator
• the sun’s rays are more concentrated at the equator
• the polar regions remain colder because the colour white reflects heat and so doesn’t absorb much warmth

Question 2

what prevents the equator from getting too hot and the poles too cold? (global heat distribution)

Answer 2

ocean currents and winds

Question 3

what is wind caused by?

Answer 3

differences in air pressure

Question 4

does wind blow from high to low pressure or from low to high pressure?

Answer 4

high to low

Question 5

what is the global circulation model?

Answer 5

a theory that explains how the atmosphere operates in a series of three cells each side of the equator