Greenhouse Gasses

What scientist is responsible for measuring CO2 in the atmosphere and showing that CO2 is increasing every year?

• Albert Einstein

• Anthony Davis

• Charles Keeling

• Steven Jobs

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Why would a scientist choose Hawaii to study the atmosphere?

• It is easy to get scientists to live in Hawaii

• Since it is near the equator, it has warm days and nights

• The air is fresh since it is not near any large cities and pollution

• Great surfing

The Keeling Curve "curves" upward. Why?

• Because we are in a cooling cycle

• Because earth is getting older

• Because there is all graphs go upward

• Because there is more CO2 in the air each year

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How did Charles Keeling get his evidence?

• He drilled in the ice of Antartica

• He captured air in a glass bubble on top of a volcano

• He took samples of soil from volcanoes

• He visited other universities around the world

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

How long has the earth been going through cycles of high-levels of CO2 and low-levels of CO2?

• Ever since Charles Keeling has been measuring the atmosphere

• Ever since the Industrial Revolution - about 250 years ago.

• Ever since the last ice age - about 10,000 years ago

• Ever since the earth has had an atmosphere - over 4 billion years ago

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

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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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Why do scientists think that the Industrial Revolution was bad for our atmosphere?

• Because when machines were invented, they created a lot of smoke and heat

• Because when machines were invented, they used fossil fuels

• Because when machines were invented, we stopped using natural energy from horses and cows

• Because when machines were invented, they used the energy from fossil fuels and made greenhouse gasses that trapped heat

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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

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