UNIT 1 - Hazardous Earth - Climate Change

Provide two reasons why it is hotter at the equator

• atmosphere is thicker at the equator

• The angle of the sun’s rays mean the heat is more intense at the equator

• atmosphere is thinner at the equator

When warm air rises, what kind of pressure does this create?

• low pressure

• high pressure

Warm air rises, creating low pressure... but what kind of weather does this create?

• settled - low rainfall

• unsettled - high rainfall

Name the three global circulation cells

• Hadley

• Ferrell

• Solar

• Polar

What is the role of the global circulation cells?

• to circulate / redistribute heat

• help the world to spin

Warm water also rises, while cold water sinks. These are called ocean currents - what are their role?

• to redistribute heat within the oceans

• help the world to spin

What is the band of low pressure known as on the equator?

• low pressure zone

• ITCZ

Low pressure at the equator (ITCZ) causes what kind of weather?

• settled - low rainfall

• unsettled - high rainfall

PAST CLIMATE CHANGE - Do volcanic eruptions make our climate hotter or colder?

• hotter

• colder

Lots sunspots on the sun's surface...

• makes our climate colder

• makes our climate warmer