The Atmosphere

What is the definition of atmosphere?

• the gases surrounding our planet

• all the gases except greenhouse gases

• only greenhouse gases

• the percentage of oxygen in the air

The lowest level of the atmosphere is the _______________.

• Troposphere

• Stratosphere

• Mesosphere

• Exosphere

This layer of the atmosphere contains the ozone layer.

• Troposphere

• Stratosphere

• Thermosphere

• Exosphere

This layer of the atmosphere is where weather occurs.

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Earth's current atmosphere is

• 78% nitrogen, 21% oxygen, 0.9% argon and 0.037% carbon dioxide
• 78% oxygen, 21%nitrogen, 0.9% argon, 0.037% carbon dioxide
• 78% nitrogen, 21% argon, 1% oxygen
• 78% oxygen, 21% nitrogen, 1% carbon dioxide

Where we live.

• stratosphere
• thermosphere
• troposphere
• mesosphere

Which type of cloud is this?

• cirrus

• stratus

• cumulus

Which type of cloud is this?

• cirrus

• stratus

• cumulus

What are the characteristics of a high-pressure system?

• Wind and rain

• Humidity and thunder

• Extremely hot temperatures

• Clear skies and sun

This tool measures the wind speed.

• barometer

• anemometer

• thermometer

• psychrometer