Chapter 19 – Air Pollution and Ozone Depletion

Core Case Study – Los Angeles Air Pollution: What caused the dirty air in Los Angeles in the 1950s?

• Industrial emissions

• Automobile exhaust

• Natural wildfires

• Dust storms

Tags

NGSS.MS-ESS3-4

Core Case Study – Los Angeles Air Pollution: Scientists found evidence for the creation of photochemical smog due to:

• industrial emissions

• vehicle emissions

• natural wildfires

• agricultural activities

Tags

NGSS.MS-ESS3-4

Core Case Study – Los Angeles Air Pollution: How did change/improvement come about? What law was implemented and when?

• The Clean Air Act was implemented in 1970.

• The Clean Water Act was implemented in 1972.

• The Endangered Species Act was implemented in 1973.

• The National Environmental Policy Act was implemented in 1969.

Core Case Study – Los Angeles Air Pollution: What has happened to ozone levels in LA since 1970?

• Ozone levels have increased significantly.

• Ozone levels have decreased significantly.

• Ozone levels have remained the same.

• Ozone levels have fluctuated without a clear trend.

Nature of the Atmosphere: The atmosphere is

• a layer of gases surrounding the Earth.

• a solid layer of the Earth.

• a body of water on the Earth's surface.

• a type of rock found on Earth.

Nature of the Atmosphere: Atmospheric pressure is _______ at sea level because _______.

• higher; the weight of the air above is greater

• lower; the weight of the air above is less

• higher; the temperature is higher

• lower; the temperature is lower

Nature of the Atmosphere: The troposphere is the lowest layer of Earth's atmosphere. Where is it found?

• Above the stratosphere

• Below the stratosphere

• Above the mesosphere

• Below the mesosphere

Nature of the Atmosphere: The stratosphere is a layer of the Earth's atmosphere. Where is it found?

• Above the troposphere

• Below the troposphere

• Above the mesosphere

• Below the mesosphere

Nature of the Atmosphere: What is the ozone layer and where is it found? How is it formed? What does the ozone layer do?

• The ozone layer is a region in the Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It is formed by the action of solar ultraviolet light on oxygen molecules.

• The ozone layer is a part of the Earth's crust that protects against earthquakes. It is formed by volcanic activity.

• The ozone layer is a layer of water in the Earth's oceans that regulates temperature. It is formed by the melting of polar ice caps.

• The ozone layer is a magnetic field around the Earth that deflects solar winds. It is formed by the Earth's core.

Major Outdoor Air Problems: What is air pollution?

• Air pollution is the presence of harmful substances in the atmosphere.

• Air pollution is the increase of oxygen levels in the atmosphere.

• Air pollution is the reduction of carbon dioxide in the atmosphere.

• Air pollution is the presence of only natural gases in the atmosphere.

Tags

NGSS.MS-LS2-4