The Greenhouse Effect

The process by which gases hold heat in the air is called the _________.

• greenhouse effect.

• photosynthesis.

• evaporation.

• condensation.

The greenhouse effect is a ________ that keeps Earth's atmosphere at a temperature that is comfortable for most living things.

• natural process.

• man-made phenomenon.

• temporary condition.

• harmful occurrence.

Three types of greenhouse gases are: 1. ________ 2. ________ 3. ________.

• 1. Carbon dioxide (CO2)

• Oxygen

• water vapor

• Methane

13. What happens when too many greenhouse gases are caught in the atmosphere?

• Global temperatures rise

• Ozone layer thickens

• Earth's rotation slows

• Increased volcanic activity

14. What can cause an increase in gases?

• Pollutants

• Planting more trees

• Reducing industrial activity

• Increasing public transportation

What are three forms of radiation received from the sun?

• Ultraviolet, Infrared, and Visible light

• Gamma rays, X-rays, and Microwaves

• Radio waves, Sound waves, and Heat waves

• Cosmic rays, Alpha particles, and Beta particles

Energy from the sun is called ________.

• radiation.

• conduction.

• convection.

• electricity.

Energy from the sun travels in ________.

• electromagnetic waves.

• sound waves.

• mechanical waves.

• ocean waves.

Infrared radiation has ________ waves than visible light.

• longer.

• shorter.

• equal length.

• no.

________ is the reflection of light in all directions.

• Scattering.

• Absorption.

• Refraction.

• Diffraction.