Solar System

Why are planets visible in the night sky?

• Planets are visible in the night sky because they are actually small stars.
• Planets are visible in the night sky because they are made of a special material that glows in the dark.
• Planets are visible in the night sky because they reflect sunlight and are illuminated by the stars.
• Planets are visible in the night sky because they emit their own light.

What is the solar system?

• The solar system is a collection of galaxies.
• The solar system is the collection of planets, moons, asteroids, comets, and other celestial bodies that orbit around the sun.
• The solar system is a single planet.
• The solar system is a mythological concept.

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How are asteroids different from stars?

• Asteroids are made up of gas, while stars are made up of rock.
• Asteroids are actually the same as stars, just smaller in size.
• Asteroids are found only in our solar system, while stars are found throughout the universe.
• Asteroids are small rocky or metallic objects that orbit the sun, while stars are massive, luminous spheres of plasma held together by gravity.

Which dwarf planet is farthest from the sun?

• Ceres

• Pluto

• Eris

• Makemake

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What is an astronomical unit?

Why do we use A.U.'s?

What is a planet's spin?

• The planet's magnetic field
• Rotation of the planet on its axis
• The planet's movement around the sun
• The planet's shape

What is a planet's revolution?

• The movement of a planet around the sun in a fixed path or orbit.
• The movement of a planet on its own axis.
• The movement of a planet towards the sun.
• The movement of a planet away from the sun.

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How does Venus's day compare to Venus's year?

• Venus's day is shorter than Venus's year.
• Venus's day and Venus's year are the same length.
• Venus's day and Venus's year have no relation.
• Venus's day is longer than Venus's year.

What is the Greenhouse Effect?

• The Greenhouse Effect is the process by which certain gases in the Earth's atmosphere trap heat from the sun and prevent it from escaping into space, resulting in a warming effect on the planet.
• The Greenhouse Effect is the process by which certain gases in the Earth's atmosphere trap cold air from the sun and prevent it from escaping into space, resulting in a cooling effect on the planet.
• The Greenhouse Effect is the process by which certain gases in the Earth's atmosphere trap heat from the Earth's core and prevent it from escaping into space, resulting in a heating effect on the planet.
• The Greenhouse Effect is the process by which certain gases in the Earth's atmosphere trap harmful radiation from the sun and prevent it from reaching the Earth's surface, resulting in a protective effect on the planet.

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