What causes winds to form on Earth?

• solar energy
• ocean currents
• elevation differences
• uneven heating of the Earth by the sun

Which is a period of dryer weather than normal?

• drought
• equinox
• monsoon
• upswelling

Which layer of Earth's atmosphere is the coldest?

• thermosphere
• mesosphere
• troposphere
• exosphere

Which layer of Earth's atmosphere is the hottest?

• troposphere
• thermoshpere
• stratopshere
• mesosphere

What gas makes up most of Earth's atmosphere?

• nitrogen
• oxygen
• carbon dioxide
• water vapor

Where we live.

• stratosphere
• thermosphere
• troposphere
• mesosphere

What causes the temperature to increase in the stratosphere?

• Nitrogen
• Ozone
• Water Vapor
• carbon dioxide

Where I find clouds.

• thermosphere
• stratosphere
• troposphere
• ionosphere

In which layer do all the pressure, wind and precipitation changes occur?

• stratosphere

• troposphere

• exosphere

• thermosphere

The Northern Lights are found in the

• mesophere

• troposphere

• thermosphere

• stratosphere