Unit 5 Study Guide

The pictures show a greenhouse and Earth's atmosphere. How are a greenhouse and Earth's atmosphere most alike?

• Both contain large amounts of carbon dioxide.

• Both lower the temperature to be suitable for life.

• Both trap heat inside and prevent it from escaping.

• Both prevent harmful radiation from reaching Earth.

Chantal is creating a diagram showing the layers of Earth's atmosphere. She wants to show the location of the ozone layer on her diagram. Where should Chantal place the label for the ozone layer?

• in the troposphere

• in the stratosphere

• in the mesosphere

• in the thermosphere

Where does most of Earth's weather occur?

• troposphere

• thermosphere

• mesosphere

• stratosphere

Which of the following is NOT a protection provided by the layers of Earth's atmosphere?

• the reduction of the Sun's harmful rays reaching living organisms on Earth

• the burning of objects from space before they reach the surface of Earth

• the maintenance of a stable temperature suitable for life on Earth

• the creation of seasons that allow temperature changes on Earth

The table shows some data about each of Earth's atmospheric layers. Which atmospheric layer is MOST LIKELY exposed to the least amount of damaging ultraviolet (UV) rays from the Sun?

• Stratosphere

• Thermosphere

• Mesosphere

• Troposphere

Which two layers of the atmosphere are characterized by decreasing temperatures with increasing altitude?

• stratosphere, thermosphere

• troposphere, mesosphere

• stratosphere, mesosphere

• troposphere, thermosphere

What would most likely happen if Earth did not have an atmosphere?

• Humans and animals would not survive because the oxygen level would increase, but plants would survive because the carbon dioxide level would remain the same.

• Humans and animals would survive because they would have more oxygen to breathe, and plants would survive because the carbon dioxide level would increase.

• Humans and animals would survive because the oxygen level would remain the same, but plants would not survive because the level of carbon dioxide would decrease.

• Humans and animals would not survive because they would not have oxygen to breathe, and plants would not survive without the carbon dioxide provided by humans and animals.

Ben is boiling water to make pasta. He leaves his metal stirring spoon in the boiling water for a few minutes. What will most likely happen to the temperature of the metal spoon?

• The temperature of the metal spoon will increase because cold energy from the spoon will transfer to the water.

• The temperature of the metal spoon will decrease because heat energy from the spoon will transfer to the water.

• The temperature of the metal spoon will increase because heat energy from the boiling water will transfer to the spoon.

• The temperature of the metal spoon will decrease because cold energy from the boiling water will transfer to the spoon.

Which of the following is correct when convection occurs in the atmosphere?

• Cool air rises and warm air sinks.

• Cool air sinks and warm air rises.

• Cool and warm air sink.

• Cool and warm air rise.

Choose the question that CANNOT be answered by gathering data from the model.

• How does the Sun's angle affect heat energy received by Earth's land masses?

• How does Earth's rotation affect ocean circulation?

• How does heat absorption differ on land compared to water?

• How does direct sunlight warm water compared to indirect sunlight?