Greenhouse Effect

1.  Which of these could increase average global temperatures? 

• A.  increased use of fossil fuels 
• A.  increased ocean plants 
• A.  decreased carbon dioxide emissions 
• A.  increased numbers of animal species

1.  Which of the following pairs of gases are the most abundant in Earth’s atmosphere?

• Nitrogen and Oxygen.
• Methane and Nitrogen.
• Water Vapor and Oxygen.
• Carbon Dioxide and Carbon Monoxide.

Which of the following gases, released by animals as a waste product of digestion, can add to global warming?

• Carbon Dioxide
• Methane
• Chlorofluorocarbon
• Nitrogen

1.  In the past, refrigerators, aerosol spray propellants and cleaning solvents were all sources of a greenhouse gas known as

• carbon dioxide
• methane
• chlorofluorocarbon (CFC)
• nitrous oxide

1.  Carbon dioxide (CO₂) is added to the atmosphere by each of the following EXCEPT

• burning fossil fuels.
• decay of organic matter and animal waste.
• water vapor.
• eruption of volcanoes.

1.  Certain gases in the atmosphere – water vapor, carbon dioxide, methane and nitrous oxide – help maintain the Earth’s temperatures and climate. These are called: __________ . 

• A.  ozone gases
• A.  solar gases
• A.  greenhouse gases 
• A.  stomach gases

1.  In the diagram to the right, which of the following best explains the temperatures observed at Earth’s surface?

• Without a greenhouse effect, energy absorbed at Earth’s surface is lost to space.
• With a greenhouse effect, the upper atmosphere reflects away all the Sun’s energy.
• Without a greenhouse effect, all the Sun’s energy is absorbed deep into Earth’s crust.
• With a greenhouse effect, heat flows from the cold atmosphere to the warm surface.

1.  Too many greenhouse gasses in the atmosphere may block heat from escaping into space and trap too much heat next to the Earth’s surface causing: ____________. 

• A.  another ice age 
• A.  global warming 
• A.  earthquakes 
• A.  volcanic eruptions

Something that might happen because of global warming is: __________. 

• A.  melting polar ice caps 
• A.  more reflected sunlight off the ice pack 
• A.  lower sea levels 
• A.  a sale on bathing suits

1.  Why is the Ozone important to life on Earth?

• A.   The Ozone reflects all the Ultra Violet radiation
• A.  The Ozone absorbs all the heat that come up from the Earth.
• The Ozone provides all the oxygen to Earth.
• The Ozone protects the Earth’ s atmosphere and the life on Earth from harmful radiant energy emitted by the sun