Podcast
Questions and Answers
What percentage of Earth's hydrosphere is saltwater?
What percentage of Earth's hydrosphere is saltwater?
- 2.5%
- 68.9%
- 97.5% (correct)
- 30.8%
Where is 68.9% of Earth's fresh water located?
Where is 68.9% of Earth's fresh water located?
- In the soil moisture, groundwater, and permafrost in the Earth's crust
- In easily accessible lakes, reservoirs, and river systems
- In the form of ice and permanent snow cover in the Arctic, the Antarctic and mountain glaciers (correct)
- In the form of fresh groundwater
What causes the continuous change in the shape of Earth's hydrosphere?
What causes the continuous change in the shape of Earth's hydrosphere?
- Seafloor spreading and continental drift (correct)
- Tectonic plate collisions
- Atmospheric pressure changes
- Volcanic eruptions
What is the estimated total mass of Earth's hydrosphere?
What is the estimated total mass of Earth's hydrosphere?
Where is the smallest percentage of Earth's fresh water located?
Where is the smallest percentage of Earth's fresh water located?
What is climate?
What is climate?
What determines the season like raining, humid, hot, windy, snowy, and frosty?
What determines the season like raining, humid, hot, windy, snowy, and frosty?
What is the main element of weather and climate discussed in the chapter?
What is the main element of weather and climate discussed in the chapter?
How is climate different from weather?
How is climate different from weather?
What does climate give an average of for a country or region?
What does climate give an average of for a country or region?
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Study Notes
Earth's Hydrosphere
- 97% of Earth's hydrosphere is saltwater.
- 68.9% of Earth's fresh water is located in ice caps, glaciers, and permanent snow.
- The continuous change in the shape of Earth's hydrosphere is caused by the water cycle and the movement of tectonic plates.
- The estimated total mass of Earth's hydrosphere is approximately 1.386 billion cubic kilometers.
Fresh Water Distribution
- The smallest percentage of Earth's fresh water is located in rivers, lakes, and wetlands, which accounts for only 0.3%.
Climate and Weather
- Climate refers to the long-term average atmospheric conditions in a particular region, including temperature, humidity, and precipitation.
- Climate is determined by factors such as latitude, altitude, and the presence of oceans and mountains.
- Weather, on the other hand, refers to the short-term and local conditions of the atmosphere, including temperature, humidity, cloudiness, wind, and precipitation.
- The main element of weather and climate discussed in the chapter is water.
- Climate gives an average of temperature, precipitation, and other atmospheric conditions for a country or region over a long period of time.
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