Atmosphere unit test lesson 8 unit 5
1. What is the atmosphere?
a) The layer of gases that surrounds the Earth
b) The layer of ice that covers the Earth
c) The layer of rocks that surrounds the Earth
d) The layer of water that covers the Earth
2. How does the atmosphere provide protection for the Earth?
a) It traps heat from the sun
b) It shields the Earth from harmful radiation
c) It regulates the Earth's temperature
d) All of the above
3. Which layer of the atmosphere is closest to the Earth's surface?
a) Thermosphere
b) Exosphere
c) Troposphere
d) Stratosphere
4. What is the main gas that makes up the Earth's atmosphere?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Argon
5. What is the ozone layer?
a) A layer of ozone gas that protects the Earth from UV radiation
b) A layer of ice that covers the Earth
c) A layer of rocks that surrounds the Earth
d) A layer of water that covers the Earth
6. What is the greenhouse effect?
a) The trapping of heat in the Earth's atmosphere by greenhouse gases
b) The cooling of the Earth's surface by greenhouse gases
c) The blocking of sunlight by greenhouse gases
d) The formation of greenhouses in the Earth's atmosphere
7. How do human activities contribute to air pollution?
a) Burning fossil fuels releases pollutants into the atmosphere
b) Deforestation releases carbon dioxide into the atmosphere
c) Industrial activities release toxic chemicals into the atmosphere
d) All of the above
8. What are some effects of air pollution on the environment?
a) Acid rain
b) Smog
c) Global warming
d) All of the above
9. What is the importance of the atmosphere for living organisms?
a) It provides oxygen for respiration
b) It regulates the Earth's temperature
c) It protects living organisms from harmful radiation
d) All of the above
10. How can we help protect the atmosphere?
a) Use renewable sources of energy
b) Reduce our carbon footprint
c) Plant trees
d) All of the above