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- 1. Multiple Choice
What are gases in the air called that are found in very small amounts?invisibletraceparticleatmospheric - 2. Multiple ChoiceEarth is surrounded by an envelope of gases called the _____________.hydrospheresolar systematmospherecloud bubble
- 3. Multiple ChoiceThe term used to describe the condition of Earth's atmosphere at a given place or time is ________________.climateweathersystemsstatus
- 4. Multiple ChoiceWhat do dust, smoke, salt, and chemicals have in common?They are gases in the air.They make up water vapor in the air.They are particles in the air.They are only found in pure air.
- 5. Multiple ChoiceWhich of these does a fire need to burn?argoncarbon dioxidenitrogenoxygen
- 6. Multiple ChoiceWhich of these do plants need in order to make food?argoncarbon dioxidenitrogenoxygen
- 7. Multiple ChoiceWhich of these makes up about 21 percent of the atmosphere?argoncarbon dioxidenitrogenoxygen
- 8. Multiple Choice_________________ is the most abundant gas in our atmosphere.ArgonOxygenCarbon DioxideNitrogen
- 9. Multiple ChoiceWhich environment on Earth would contain the most water vapor?SavannahDesertRainforest
- 10. Multiple ChoiceWhat are the percentages of the main gases on Earth?78% oxygen, 21% nitrogen and 1% other78% other, 21% oxygen and 1% nitrogen78% nitrogen, 21% oxygen and 1% other95% carbon dioxide and 5% oxygen
- 11. Multiple ChoiceHow does the atmosphere protect life on Earth?It blocks harmful rays from the sunIt keeps our planet the right temperatureIt provides oxygen to breatheAll of these protect life on Earth
- 12. Multiple Choice
What gas is released into the atmopshere when fossil fuels are burned?
oxygen
carbon dioxide
nitrogen
argon
- 13. Multiple Choice
Which gas makes up 78% of the atmosphere?
ozone
oxygen
nitrogen
water vapor
- 14. Multiple ChoiceWhat does ozone in the atmosphere do?it absorbs and traps heat energyit provides a place for water vapor to condenseit protects against harmful uv radiationit helps plants grow
- 15. Multiple Choice
Which gas is released into the atmosphere by plants following photosynthesis?
Oxygen
Argon
Carbon dioxide
Nitrogen
- 16. Multiple Choice
What gas in the air is causing global warming?
carbon dioxide
oxygen
helium
- 17. Multiple Choice
What layer protects us from the sun's harmful rays?
protection layer
ozone layer
atmospheric layer
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