Hazardous earth

Question 1

What two ways is heat redistributed by air movements?

Answer 1

• Pressure differences

- Ocean currents

Question 2

How does land heat up in the summer and does it form areas of high or low pressure?

Answer 2

• dark surfaces absorb light, which is converted to heat
• heats quickly in summer but only at the surface so cools quickly in winter
• when it heats, it also heats the air above, so air expands, becomes lighter + rises
• Forms areas of low pressure in summer

Question 3

How does the sea heat up in the summer and does it form areas of high or low pressure?

Answer 3

• sunlight is reflected from the surface
• some sunlight is absored to 30m depth
• so sea takes longer to heat and longer to cool
• in summer air over the sea remains cooler + denser forming areas of high pressure

Question 4

What do differences in pressure cause?

Answer 4

• Causes air to move from a high to a low pressure creating wind
• The wind moves in a circular way because of yhe Earth’s rotation