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Questions and Answers
What is the approximate speed at which solar radiation travels from the sun to the Earth?
What is the approximate speed at which solar radiation travels from the sun to the Earth?
- 299,792 kilometers per second (correct)
- 50,000 kilometers per second
- 150,000 kilometers per hour
- 1,000 kilometers per second
What is the primary source of energy for solar radiation?
What is the primary source of energy for solar radiation?
- Reflection of light from the moon
- Geothermal heat from the Earth's core
- Chemical reactions in the Earth's atmosphere
- Nuclear fusion reactions in the sun's core (correct)
What percentage of solar radiation is absorbed by the Earth's surface and atmosphere?
What percentage of solar radiation is absorbed by the Earth's surface and atmosphere?
- Less than 10%
- More than 90%
- About 70% (correct)
- Around 50%
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