Gases

Why do scientists think that the big increase in CO2 in our atmosphere is caused by humans?

• Because humans breath out CO2

• Because the big increase started at the same time the industrial revolution started - about 250 years ago.

• Because that's when volcanoes started putting CO2 into the atmosphere

• Because that's when humans started cutting down the rainforest

Tags

NGSS.MS-ESS3-4

Why is higher levels of CO2 in the atmosphere bad?

• Because higher levels of CO2 also mean less oxygen for humans to breath.

• Because higher levels of CO2 mean more plants and forests will die.

• Because higher levels of CO2 mean more heat will be trapped in our atmosphere.

• Because higher levels of CO2 mean more radiation will be reflected into space and the earth will get cooler

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NGSS.HS-ESS2-4

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

Why are greenhouse gasses bad?

• They trap heat from radiation

• They reflect heat from the sun

• They make it hard for humans to breath

• They cause cancer

Tags

NGSS.MS-ESS3-5

What does this graph tell us?

• This graph tells us that the earth is in a cooling trend

• This graph tells us that the CO2 in the atmosphere is falling right now

• This graphs shows us that when the CO2 levels go up, the earth's temperature goes up.

• This graph shows us the Keeling Curve

Tags

NGSS.MS-ESS3-5

What does this graph tell us?

• This graph tells us that CO2 has been blue for about 800,000 years

• This graph tells us that we have only had CO2 in the atmosphere for 800,000 years

• This graph tells us that humans are responsible for climate change

• This graph shows that about every 100,000 years we have a cycle of higher and lower CO2 levels in the atmosphere

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NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Which of these gasses in our atmosphere is NOT a greenhouse gas?

• Oxygen

• carbon dioxide (CO2)

• methane

• nitrous oxide

Which of these statements is TRUE?

• All greenhouse gases are bad

• Humans are responsible for all greenhouse gases (humans make all greenhouse gases).

• If humans stopped putting greenhouse gases into the atmosphere, then our climate would stay the same forever

• Trees and plants take CO2 out of the atmosphere

Tags

NGSS.MS-ESS3-5

NGSS.MS-LS1-6

How did scientists gather information about the atmosphere in the time of the dinosaurs?

• They drilled in ice in Antarctica and studied the gas in the trapped bubbles

• They used glass bubbles to gather air samples

• They visited schools all over the world

• They studied fossils

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NGSS.HS-ESS1-6

Gas particles move around at __________ speeds. 

• low

• slow

• high

• unknown

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

Which of the following statements describe gas the BEST.

• Gas has a packed shape.

• Gas cannot change shape.

• Gas has a definite shape.

• Gas spreads out to fill a space.

Tags

NGSS.MS-PS1-4