Unit 1 Weather and Climate

Why is the bottom of the troposphere warmer than its top portion?

• Heat from the core of Earth is radiated upward into the

  troposphere.

• Sunlight is conducted down until it reaches the bottom portion

  of the troposphere.

• Sunlight warms the surface of Earth and the heat is radiated

  back into the troposphere.

• Heat transfers from the other layers of the atmosphere and is

  pushed into the bottom portion of the troposphere.

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Which atmospheric layer is closest to Earth’s surface?

• exosphere

• mesosphere

• stratosphere

• troposphere

“Tropo” is a Greek prefix meaning to change or to turn. Why is

troposphere an appropriate name for the layer of atmosphere closest to Earth?

• The source of sunlight in the troposphere is constantly

  changing.

• The troposphere turns or rotates in the opposite direction of

  Earth’s rotation.

• The composition of the troposphere changes based on your

  location on Earth.

• The troposphere is the layer in which weather occurs, meaning conditions are constantly changing.

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Which layer of the atmosphere has

the coldest temperatures?

• exosphere

• mesosphere

• stratosphere

• thermosphere

In which two layers of the atmosphere are temperatures generally warmer at higher altitudes?

• stratosphere and thermosphere

• mesosphere and stratosphere

• mesosphere and troposphere

• troposphere and stratosphere

A meteorologist observes a decrease in barometric pressure and predicts a chance of light to moderate precipitation. Which frontal system is most likely approaching?

• cold front

• warm front

• occluded front

• stationary front

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What provides the energy needed to

fuel the water cycle?

• carbon dioxide

• moon

• sun

• oxygen

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Which part of the water cycle is occurring as one sees a cloud form?

• condensation

• evaporation

• precipitation

• transpiration

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Which term best describes the circulation of air and water in the atmosphere?

• condensation

• convection

• evaporation

• sublimation

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Which best explains why it rains in the deserts less than other areas on Earth?

• Most deserts are in the hottest areas of the world and water cannot condense to form clouds

• Most deserts are bordered by oceans, which draw the water away from the land because of gravity.

• Most deserts are bordered by mountains that prevent the flow of atmospheric water into the regions.

• Most deserts exist in areas where people have overused water resources, preventing any water from staying on the ground long enough to be evaporated.

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