SC READY Science Grade 6 Practice Questions - South Carolina SC READY Science Assessment - Grade 6 Exam

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Gas temperatures in the upper thermosphere can reach over 1,500°C, yet an astronaut sticking a hand out would feel freezing cold. Why is this?

Gas molecules absorb intense solar radiation and move fast, but air density is so low that very few molecules strike skin to transfer heat The thermosphere is packed with dense carbon dioxide that blocks thermal conduction Geothermal energy from Earth's core cools high altitudes Ocean tides absorb all thermal energy from upper air layers

Correct Answer:

Gas molecules absorb intense solar radiation and move fast, but air density is so low that very few molecules strike skin to transfer heat

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