Carbon Cycle & Greenhouse Effect

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

Which is a true statement?

• Humans depend on oxygen, plants depend on carbon dioxide

• Plants produce carbon dioxide

• Humans depend on carbon dioxide, plants depend on oxygen

• Humans don't depend on plants for the air they need

Tags

NGSS.MS-LS1-6

The greenhouse effect is a natural process

• true

• false

The greenhouse effect is caused by

• more heat arriving at the Earth from the sun

• the Earth releasing more heat at night

• gases in the air trapping heat released by the Earth

Gasoline, diesel, natural gas, and coal are all _________. Burning them releases CO₂ into the atmosphere.

• fossil fuels
• renewable resources
• clean fuels
• liquid dinosaurs

A decrease in forest land results in a net ________ of CO₂ in the atmosphere.

• decrease
• increase
• no change
• fluctuation

Compared to the variations over the last 400,000 years, which has increased most dramatically in the past 100 years?

• Atmospheric CO2 concentration

• Global Temperatures

• Sea level

Which of these statements is true?

• Infrared light comes into the earth, and the earth radiates visible light.

• Visible light comes into the earth and the earth radiates infrared light.

Atmospheric carbon dioxide blocks

• all out going Infra Red radiation

• all IR radiation at certain wavelengths

• about half of the IR radiation at certain wavlengths