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Answers - Understanding Earth & Water
Answers to Understanding your Earth & Water questions
1. What is the most vulnerable part of the earth?
Ans. Atmosphere
2. Which hemisphere has the most land and vegetation?
Ans. Northern
3. What percentage of people gets their water from the Himalayan system?
Ans. 40%
4. What lake in Africa is disappearing?
Ans. Lake Chad
5. How does the redistribution of warm and cold happen around the earth?
Ans. Through the wind and ocean currents
6. When was the first picture of the earth from space taken?
Ans. 1968
7. How long does the ice data go back in the Antarctic?
Ans. 650,000 years
Answers to Understanding Water questions
1. What is a proven technology or practice that can decrease agricultural water use?
Ans. Drip irrigation, Planting low water use crops
2. What are other uses and benefits of fresh water aside from human consumption?
Ans. Stream flow, Provides animal and plant nutrients and habitat, Wetland filtration, Recreation
3. What are 3 things you can do personally to reduce your water use?
Ans. Turn off the water when brushing teeth, Plant drought tolerant landscaping, Reduce meat consumption
4. What is one benefit of a dam?
Ans. Produce hydroelectricity, Prevent flooding, Control water storage; Make navigation easier
5. What is one negative impact of a dam?
Ans. Impede the flow of soil nutrients, Impede fish migration, Flood rivers upstream
6. Name 3 sources of fresh water.
Ans. Melting snow, Aquifers, Groundwater, Rainwater, Icebergs, Desalinization of salt water
