Chemistry: Clean air and Water Flashcards
The Earth’s atmosphere is made up of 2 main gases. What are they?
Oxygen and Nitrogen
What does the Ozone layer do?
Filters out harmful UV rays
What is the main use of oxygen?
Sustain life, breathing
What is nitrogen used to make?
Fertilizer
The remaining 1% of the atmosphere is made up of small amounts of what?
water vapour, carbon dioxide, argon and other gases
Fuels contain carbon, and when burned they form what?
Carbon dioxide
You can test for carbon dioxide by bubbling gas through lime water. What happens to the lime water?
It turns milky
The Earth is surrounded by layers of gas. The layer nearest to the Earth’s surface is called what?
The atmosphere
What is Global warming?
The increasing of the Earth’s temperature
Why is the Earth’s surface temp increasing?
Increase of greenhouse gases in the atmosphere
What are the main greenhouse gases?
Water vapour, methane and carbon dioxide
What do greenhouse gases do?
Keep the Earth’s temp at a life sustaining level
Why is too many greenhouse gases a problem?
They keep too much heat in the atmosphere
Global warming can cause climate change. What does climate change look like? Name 3
Extreme storms, drought, sea level rise, melting glaciers, heat waves, shifting vegetation, changes in regional temp
What can we do to reduce CO2 emissions
Alternative transport, better insulation, limit indsutry emissions
