Comprehensive Earth Science Review

Green House gases

• absorb the sun's radiation and trap heat

• are good for our health

• absorb gravity and keep us attached to Earth

• expulse radiation to the sun and prevent us from getting to warm

What would be Earth's temperature without green house gases?

• Earth's temperatures would be cold, oceans would freeze

• The same, green house gases do not affect Earth's temperature

• Earth's temperature would be 90 Fahrenheit

What activity is increasing green house gases?

• Ocean and air currents

• Volcanic activity

• Plants activity

• Human activity

what is greenhouse effect

• the process of reflecting the heat from the back to the outer space.

• it is the process of trapping of heat from the sun by the greenhouse gases.

what happens when air is heated?

• it rises

• it decreases

• no effect

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

• True
• False

Without the Greenhouse Effect the Earth would be

• warm 
• cold
• dead

How would Earth be different without greenhouse gases in its atmosphere?

• More heat from solar radiation would escape into space

• More solar radiation would be reflected back into space

• More solar radiatio would penetrate Earth's crust and mantle

• More heat from solar radiation would be stored in Earth's crust

About 30% of the sun's incoming energy never reaches Earth because it is....

• absorbed by the ocean
• trapped by the gravitational pull between the moon and the Earth 
• reflected back into space
• destroyed by the ozone layer

Greenhouse gases, in moderate amounts, keep the Earth's temperature stable

• True
• False