KRSNAK EPS Flashcard 2 Review

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What are Rocky Planets?

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Rocky planets, also known as terrestrial planets, are planets that are primarily composed of rock and metal. They have solid surfaces and are located closer to the sun, including Mercury, Venus, Earth, and Mars.

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What are Gaseous Planets?

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Gaseous planets, also known as gas giants, are large planets that are primarily composed of gases such as hydrogen and helium. They do not have a solid surface and include Jupiter, Saturn, Uranus, and Neptune.

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What is the asteroid belt?

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The asteroid belt is a region of space located between the orbits of Mars and Jupiter, where a large number of asteroids are found. It separates the inner rocky planets from the outer gaseous planets.

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What is a comet?

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A comet is a small celestial body made of ice, dust, and frozen gases that orbits the sun. Comets are known for their bright tails that develop when they approach the sun.

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What is the difference between a meteor and a meteoroid?

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A meteoroid is a small rock or particle from space, while a meteor is the streak of light produced when a meteoroid enters the Earth's atmosphere and burns up.

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What is surface gravity?

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Surface gravity is the gravitational force experienced at the surface of a planet or celestial body. It depends on the mass of the body and the distance from its center to the surface.

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How does the radius of a planet affect its surface gravity?

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A larger radius can weaken surface gravity because it increases the distance from the center of gravity to the surface, even if the mass remains the same.

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What are the characteristics of Rocky Planets?

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Rocky planets are characterized by their solid surfaces, higher density, and being located closer to the sun. They are also spaced relatively close to each other.

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What are the characteristics of Gaseous Planets?

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Gaseous planets are characterized by their lack of a solid surface, lower density, and being located further from the sun. They are generally much larger than rocky planets.

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What is a meteor shower?

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A meteor shower occurs when a large number of meteors are observed to radiate from a specific point in the night sky, usually caused by Earth passing through the debris left by a comet.