Earth's Atmosphere Study Guide

Which atmospheric layer has the greatest air pressure and density of all the layers?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Fill in the blank: The stratosphere contains the ________ layer.

• A) Ozone

• B) Water

• C) Dust

• D) Ice

Fill in the blank: The mesosphere is known for having the ________ temps in Earth's atmosphere.

• Coldest

• Hottest

• Mildest

• Wettest

Fill in the blank: Meteoroids burn up in the ________.

• A) Mesosphere

• B) Troposphere

• C) Stratosphere

• D) Thermosphere

Fill in the blank: The troposphere extends about ________ kilometers from Earth's surface.

• 15

• 50

• 85

• 100

Fill in the blank: The temperature in the mesosphere can be as cold as ________ degrees Celsius.

• -90

• 0

• 50

• 100

Which atmospheric layer has the hottest temperature, reaching up to 2,000 degrees Celsius?

• Troposphere

• Stratosphere

• Thermosphere

• Exosphere

The thermosphere extends out from the Earth's surface to how many kilometers?

• 400 km

• 500 km

• 600 km

• 700 km

Which of the following is a fact about the thermosphere?

• It has the highest air pressure

• Aurora Borealis occurs here

• It is the coldest layer

• It contains the ozone layer.

The International Space Station is located in which atmospheric layer?

• Troposphere

• Stratosphere

• Thermosphere

• Exosphere