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choose the letter of the best answer
1. Which of the following is NOT a major component of the atmosphere? A. Argon C. Oxygen B. Nitrogen D. Ozone Layer
2. In the troposphere temperature, ____ with altitude. A. changes randomly C. increases B. decreases D. stays the same
3. Carbon dioxide and water vapor are both ___acting to warm the Earth. A. chlorofluorocarbon gases C. halogen gases B. greenhouse gases D. variable gases
4. How many percent is the Oxygen in the atmosphere? A. 0.1% C. 21% B. 15% D. 78%
5. Which of the following is the correct order of the atmosphere layers from Earth to space? A. thermosphere, stratosphere, mesosphere, troposphere, exosphere B. troposphere, mesosphere, thermosphere, exosphere, stratosphere C. troposphere, stratosphere, mesosphere, exosphere, thermosphere D. troposphere, stratosphere, mesosphere, thermosphere, exosphere
6. This layer is where weather occurs. A. exosphere C. thermosphere B. stratosphere D. troposphere
7. The ____ in the stratosphere protects us from harmful UV rays? A. aurora borealis C. stratosphere B. ozone layer D. weather
8. What possible effect of having more greenhouse gases in our atmosphere? A. It leads to cleaner air. B. It causes less air in the atmosphere C. It can lead to a cooler atmosphere D. It causes climate change and increase in the global temperature
9. What happens to the density (thickness)/ air pressure of the air as you increase in altitude? A. It decreases C. It disappears B. It increases D. It stays the same
10. Why airplane fly in stratosphere? A. Because more humid occurs in stratosphere B. Airplane flies in troposphere not in stratosphere C. Because almost clouds occur in this layer that avoid turbulence. D. Because few clouds are found in this layer and almost all clouds occur in the troposphere.
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