One way would be to build a drink-bottle greenhouse. You can make a simple one with a large clear plastic soft-drink bottle. Cut the bottom off and make a few small holes in the sides near the bottom; leave the lid off or make a small hole in the lid to let some air flow through. Get several small pot-plants, and place a bottle over about half of them. Make sure you keep the plants moist. Place them in a position with lots of light but not too much direct sun. Which plants grow fastest? What if you put them in a really sunny position?
The bottle captures the warmth from the sun, just as greenhouse gases (methane, carbon dioxide) do in the atmosphere.
To do an experiment with global warming on a large scale, we’d need a large planet, so we can’t recreate it exactly. But we can observe the effects of different gases in a planet’s atmosphere by looking at Venus, which has runaway greenhouse warming because of carbon dioxide, and its surface temperature is more than 450 degrees!
We can also use computers to model what we will do to our own atmosphere when we add different types of gases to it, and lots of really smart scientists have shown with these computer models that temperatures all over the world are going to rise enough to cause serious environmental problems in the future.
One way would be to build a drink-bottle greenhouse. You can make a simple one with a large clear plastic soft-drink bottle. Cut the bottom off and make a few small holes in the sides near the bottom; leave the lid off or make a small hole in the lid to let some air flow through. Get several small pot-plants, and place a bottle over about half of them. Make sure you keep the plants moist. Place them in a position with lots of light but not too much direct sun. Which plants grow fastest? What if you put them in a really sunny position?
The bottle captures the warmth from the sun, just as greenhouse gases (methane, carbon dioxide) do in the atmosphere.
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I like Peter’s idea!
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To do an experiment with global warming on a large scale, we’d need a large planet, so we can’t recreate it exactly. But we can observe the effects of different gases in a planet’s atmosphere by looking at Venus, which has runaway greenhouse warming because of carbon dioxide, and its surface temperature is more than 450 degrees!
We can also use computers to model what we will do to our own atmosphere when we add different types of gases to it, and lots of really smart scientists have shown with these computer models that temperatures all over the world are going to rise enough to cause serious environmental problems in the future.
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