Earth's Climate

The driving force behind Earth's climate system is

• wind

• water

• sun

• rock

What are the components of Earth's climate system? (Choose all that apply.)

• atmosphere

• hydrosphere

• lithosphere

• biosphere

The thin layer of gases that surrounds Earth is called the

• atmosphere

• hydrosphere

• lithosphere

• biosphere

Which gas is most abundant in Earth's atmosphere?

• carbon dioxide

• oxygen

• methane

• nitrogen

Ground water, lakes, rivers, streams, oceans, ice, and water vapour make up Earth's

• atmosphere

• hydrosphere

• lithosphere

• biosphere

True or False? Earth's polar ice caps melt completely every summer and re-form in in winter.

• true

• false

The region of Earth where life exists is called the

• atmosphere

• hydrosphere

• lithosphere

• biosphere

What processes increase the greenhouse gas concentration in Earth's atmosphere? Choose all that apply.

• burning fossil fuels

• photosynthesis

• decomposition of organic material

• cellular respiration