Unit 4

What gas from the list below is a cause for global warming?

• Urethane
• Oxygen
• Carbon Dioxide

What is the greenhouse effect?

• The warming of a planet due to trapped radiation.
• The cooling of Earth due to air pollution.
• The heating of a solid, such as a rock.

 Which of the following activities contributes the most to carbon emissions globally?

• Deforestation
• Agriculture
• Burning fossil fuels
• Respiration

Melting of glaciers and polar ice caps....

• will result in cooler temperatures in the Arctic
• will result in sea-levels rising
• Will have no effect on ecosystems
• None of the above

Which of the following are greenhouse gases?

• Carbon dioxide
• Methane
• Water vapor
• All answers are correct

True or False: All of the radiation from the Sun is absorbed by the Earth

• True
• False

The Earth acts like a greenhouse that catches and traps heat from the sun.

• true
• false

What happens to the temperature if more greenhouse gases are released into the atmosphere?

• Temperature goes up
• Temperature goes down

Without the Greenhouse Effect the Earth would be

• warm 
• cold
• dead

Which one of the choices below is NOT a  cause for global warming?

• Having too many farm animals
• Burning Fossil Fuels
• Planting new trees