Layers of the Atmosphere and Water Cycle

What is the envelope of gases around the Earth, that makes conditions suitable for living things and influences weather?

• troposphere
• atmosphere
• oxygen
• exosphere

Where does the energy come from to drive the water cycle?

• sun
• moon
• atmosphere
• Earth

Which forces move water through the water cycle?

• convection and sun
• gravity and wind
• convection and circulation
• gravity and convection

What is the most abundant gas in the troposphere where we live?

• oxygen
• nitrogen
• carbon dioxide
• water vapor

As you increase in altitude (move away from Earth) through the troposphere, the temperature....

• increases
• decreases
• stays the same
• evaporates

Which layer includes all life, the water cycle and weather?

• stratosphere
• mesosphere
• troposphere
• exosphere

The stratosphere is cold except for in which area that absorbs the sun's energy?

• ozone layer
• ionosphere
• northern lights

The ozone layer is responsible for protecting us from the sun's harmful...

• energy
• UV rays
• heat
• light

Which layer of the atmosphere is the coldest and where meteors burn up?

• exosphere
• stratosphere
• thermosphere
• mesosphere

Which layer of the atmosphere is the warmest, with thin air, and where the shuttles orbit the Earth?

• thermosphere
• stratosphere
• mesosphere
• atmosphere