U8L1E1: Earth's Energy

If greenhouse gases increase and build up in our atmosphere, what happens?

• They trap more heat and global temperatures rise.

• They trap more heat and global temperatures decrease.

• They trap less heat and global temperatures rise.

• They trap less heat and global temperatures decrease.

What percentage of the Sun's energy is reflected back into space?

• 100%

• About 50%

• About 30%

• It depends on the weather.

The energy coming in to from the sun minus the energy being radiated out is known as

• the greenhouse effect

• global warming

• Earth's energy budget

• the electromagnetic spectrum

Which of the following is NOT a greenhouse gas?

• H₂O

• CH₄

• CO₂

• O₂

When solar energy hits the earth

• it can be reflected by light colored surfaces like ice

• it can be absorbed by light colored surfaces by ice

• it can be reflected by dark colored surfaces like asphalt

• it cannot affect processes that occur on earth

Heat is radiated back to space from earth as

• visible light

• ultraviolet radiation

• gamma radiation

• infrared radiation

According to the diagram, what can happen when solar energy hits clouds in Earth's atmosphere?

• it can be reflected or absorbed

• it can only be absorbed

• it can only be reflected

• it is neither reflected nor absorbed

The sun transfers energy to Earth by radiation

• True

• False

Visible light is

• the light you can see from the sun

• this is where most of the warmth that you feel from the sun comes from

• higher-energy radiation that can harm life

Infrared Light is

• the light you can see from the sun

• this is where most of the warmth that you feel from the sun comes from

• higher-energy radiation that can harm life