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Questions and Answers
What is the composition of comets mainly made of?
What is the composition of comets mainly made of?
- Mainly of rock and metal
- Mainly of carbon and oxygen
- Mainly of hydrogen and helium
- Mainly of ice, dust, and volatile organic compounds (correct)
What is the solid core of a comet called?
What is the solid core of a comet called?
- Nebula
- Meteoroid
- Asteroid
- Nucleus (correct)
What characteristic feature of comets is created by the solar wind and radiation pressure pushing released gases and dust away from the nucleus?
What characteristic feature of comets is created by the solar wind and radiation pressure pushing released gases and dust away from the nucleus?
- Dust cloud
- Bright tail (correct)
- Bright halo
- Glowing coma
What causes comets to vary in brightness as they move through their orbits?
What causes comets to vary in brightness as they move through their orbits?
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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?
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