Understanding Greenhouse Gases

What are greenhouse gases?

• Gases that trap heat in Earth's atmosphere

• Gases that cool down the Earth's surface

• Gases that are only found in greenhouses

• Gases that are harmful to plants

Tags

NGSS.MS-ESS3-5

Which of the following is NOT a greenhouse gas?

• Methane

• Carbon dioxide

• Oxygen

• Water vapor

Why are greenhouse gases important for Earth?

• They make the Earth too hot to live on

• They help keep the Earth warm enough for life

• They are only important for plant growth

• They block all sunlight from reaching Earth

What is the main concern scientists have about greenhouse gases?

• Human activities are adding too much of these gases to the atmosphere

• Greenhouse gases are making the Earth too cold

• There are not enough greenhouse gases in the atmosphere

• Greenhouse gases are disappearing from the atmosphere

Tags

NGSS.MS-ESS3-5

Which of the following gases is a result of human activities and contributes to the greenhouse effect?

• Helium

• Nitrogen

• Chlorofluorocarbons

• Argon

Tags

NGSS.MS-ESS3-5

What is the greenhouse effect?

• The reflection of sunlight by greenhouse gases

• The process by which greenhouse gases trap heat in the atmosphere

• The effect of plants growing faster in greenhouses

• The cooling of Earth's surface by greenhouse gases

Tags

NGSS.MS-ESS3-5