4TH GRADE 2nd MARKING PERIOD MID-TERM EVALUATION

What is the atmosphere?

• A layer of gases that surround the Earth

• A layer of gases that surround the Moon

• A layer of only one gas that surround the Earth

Which of the following best describes the Earth's atmosphere?

• A big blanket absorbing the Sun's heat

• A big blanket absorbing the Sun's air

• None

What is the ozone layer?

• Earth's atmosphere that protects the Earth from radiation

• A portion of the Earth's atmosphere that protects the Earth from radiation

• None

What two elements make up the majority of the Earth's atmosphere?

• Oxygen and Nitrogen

• Nitrogen and oxygen

• All of the above

What layer of the Earth's atmosphere is where most meteors burn up upon entry?

• Stratosphere

• Mesosphere

• Troposphere

What layer of the Earth's atmosphere is the outermost layer and where the atmosphere is the thinnest?

• Exosphere

• Troposphere

• Mesosphere

What layer of the Earth's atmosphere is the layer next to the Earth?

• TROPOSHERE

• STRATOSPHERE

• MESOSPHERE

What layer of the Earth's atmosphere is heated by the Sun hitting the ozone layer?

• STRATOSPHERE

• MESOSPHERE

• TROPOSPHERE

What layer of the Earth's atmosphere has a very thin atmosphere, but can also become very hot?

• THERMOSPHERE

• STRATOSPHERE

• MESOSPHERE

In what layer of the Earth's atmosphere do planes usually fly?

• TROPOSPHERE

• STRATOSPHERE

• MESOSPHERE