Atmosphere

The blanket of gases that surrounds the Earth is known as the

• solstice

• hemisphere

• atmosphere

• equinox

In which layer of the atmosphere do we live?

• stratosphere

• troposphere

• thermosphere

• mesosphere

What gases make up the atmosphere?

• nitrogen

• oxygen

• argon

• carbon dioxide

• All of the above

Which gas is the most abundant?

• nitrogen

• oxygen

• argon

• carbon dioxide

What causes the seasons?

• atmosphere

• hemisphere

• rotation

• revolution

What causes day and night?

• atmosphere

• hemisphere

• rotation

• revolution

When night and day are approximately equal everywhere on Earth. This describes...

• Equinox

• Solstice

• Hemisphere

• Revolution

Twice a year when the sun reaches its highest and lowest point relative to the equator is known as ....

• equinox

• solstice

• hemisphere

• rotation

Half of the Earth is known as

• thermosphere

• atmosphere

• troposphere

• Hemisphere

A single turn around an axis is known as

• rotation

• revolution

• orbit

• seasons