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Questions and Answers
What is the composition of comets?
What is the composition of comets?
- Mainly composed of rock and metal
- Mainly composed of ice, dust, and volatile organic compounds (correct)
- Mainly composed of helium and hydrogen
- Mainly composed of carbon and nitrogen
What causes the ices in a comet's nucleus to vaporize as it approaches the Sun?
What causes the ices in a comet's nucleus to vaporize as it approaches the Sun?
- Geothermal heat
- Solar radiation (correct)
- Magnetic fields
- Gravitational pull
What is the most characteristic feature of comets?
What is the most characteristic feature of comets?
- Formation of rings
- Formation of craters
- Presence of moons
- Development of a tail (correct)
What is the solid core of a comet called?
What is the solid core of a comet called?
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What is the main composition of a comet?
What is the main composition of a comet?
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What do comets typically have two of, that stretch for millions of kilometers in the direction opposite to the Sun?
What do comets typically have two of, that stretch for millions of kilometers in the direction opposite to the Sun?
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What leads to the formation of tails in comets?
What leads to the formation of tails in comets?
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What causes the development of a glowing coma around the nucleus of a comet?
What causes the development of a glowing coma around the nucleus of a comet?
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What changes can comets undergo as they move through their orbits?
What changes can comets undergo as they move through their orbits?
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What is the orientation of comets' tails with respect to the Sun?
What is the orientation of comets' tails with respect to the Sun?
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