Science Exam Earth's Atmosphere

What is the first layer of the atmosphere, starting from the surface of the Earth?

• Exosphere

• Mesosphere

• Thermosphere

• Troposphere

• Stratosphere

Which layer of the atmosphere is known for its cold temperatures?

• Troposphere

• Mesosphere

• Exosphere

• Stratosphere

What does the earth's atmosphere do?

• helps to keep the temperature balanced on Earth

• helps UV rays to reach the Earth's surface

• creates meteors in the sky

• keeps ocean waters cold

This is the layer where most commercial jet airliners fly.

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere

What happens to the density (thickness)/air pressure of the air as you increase in altitude?

• density increases

• density decreases

• density stays the same

• density disappears

Where in the atmosphere will you find the ozone layer?

• stratosphere

• thermosphere

• exosphere

• mesosphere

Which layer in the atmosphere is the most hottest?

• troposphere

• thermosphere

• exosphere

• mesosphere

Which statement is true?

• The troposphere has the highest temperature because of the distance from the Sun

• The troposphere has the highest pressure because gravity keeps the air down.

• The exosphere has the highest temperature because of the distance from the Sun

• The exosphere has the highest pressure because gravity keeps the air down.

Which of these layers is farthest from Earth?

• thermosphere

• stratosphere

• mesosphere

• exosphere

Why are some layers warmer than others?

• they get hotter the higher up you go
• some layers contain gases that can absorb the sun's energy
• some layers closer to the sun are hotter
• there is no wind in the upper atmosphere