The solar System

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Even though the Sun makes up 99% of the mass of our solar system, it is made up of mostly the lightest element,

.

Multiple Choice

What is common to the inner terrestrial planets?

• They are all made of gas
• They are all rocky and have solid surfaces.
• They are all located in the outer solar system
• They are all covered in water

Multiple Choice

Which best describes the asteroid belt?

• A region of space between the orbits of Mars and Jupiter where many asteroids are found.
• A region of space between the orbits of Saturn and Uranus where many asteroids are found.
• A region of space beyond the orbit of Neptune where many asteroids are found.
• A region of space between the orbits of Earth and Venus where many asteroids are found.

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The Sun produces energy through a process called

.

Multiple Choice

Which of the following is NOT a type of galaxy?

• Spiral

• Clustered

• Elliptical

• Irregular

Multiple Choice

What is a black hole?

• A large rock in space
• A type of star that emits no light
• A region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.
• A region in space with low gravitational pull

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When small sized stars “die” and lose their outer layers, the cool center becomes

stars.

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When a nebula has a very dense part, gravity causes it to collapse and form a

.

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The Hertzsprung-Russell diagram plots the luminosity and

of stars.

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A red star is likely to have a(n)

luminosity, unless it is very large.

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The Sun’s

pulls all the planets towards the Sun.

Multiple Choice

What is Earth's one year travel around the Sun called?

• rotation
• orbit
• spin
• revolution

Multiple Choice

What is the difference between a comet and an asteroid?

• Comets are larger than asteroids.
• Comets orbit the sun, while asteroids orbit the moon.
• Comets have a tail, while asteroids do not.
• Comets are made of rock, while asteroids are made of ice.

Multiple Choice

Which of the following is a shared feature between Venus and Earth?

• Volcanoes and rivers

• Lots of water

• Liquid inner core

• An atmosphere

Multiple Choice

Which of the following is NOT a dwarf planet?

• Eris
• Haumea
• Europa

• Pluto

Multiple Choice

Which best describes an asteroid?

• A small, rocky object that orbits the Sun
• A large, gaseous object that orbits the Earth
• A type of comet that travels through space
• A planet with a solid surface and atmosphere

Multiple Choice

A meteorite formed Barringer Crater. Why don't meteorites strike Earth more often?

• They are repelled by Earth's magnetic field
• Most burn up in the atmosphere
• They are too small to cause damage
• They are all diverted by the moon's gravity

Multiple Choice

How is the astronomical unit (AU) defined?

• Distance from the Earth to the Moon
• Average distance from the Earth to the Sun
• Distance from the Earth to Jupiter
• Distance from the Earth to Mars

Multiple Choice

What one surface feature sets Earth apart from the other inner planets?

• Presence of water
• Lack of atmosphere
• Presence of active volcanoes
• Extreme temperatures

Multiple Choice

Which of the following is NOT a characteristic of a dwarf planet?

• Is composed mostly of ice
• Is located in the asteroid belt
• Has cleared its neighboring region of other objects
• Has a moon orbiting around it