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Comets: Characteristics Quiz

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Questions and Answers

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?

Geothermal heat

Solar radiation (correct)

Magnetic fields

Gravitational pull

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?

Nucleus Signup and view all the answers

What is the main composition of a comet?

Methane, water, and carbon dioxide Signup and view all the answers

What do comets typically have two of, that stretch for millions of kilometers in the direction opposite to the Sun?

Tails Signup and view all the answers

What leads to the formation of tails in comets?

Solar wind and radiation pressure Signup and view all the answers

What causes the development of a glowing coma around the nucleus of a comet?

Solar wind Signup and view all the answers

What changes can comets undergo as they move through their orbits?

They vary in brightness Signup and view all the answers

What is the orientation of comets' tails with respect to the Sun?

They point away from the Sun Signup and view all the answers