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100

The gases around a planet make up it ___________.

solar system

star

atmosphere

sunspot

atmosphere

100

A shooting star is a(n) ____________

greenhouse effect

asteroid belt

planet

meteor

meteor

100

A dark area that appears on the sun is call a(n) _______.

solar system

star

atmopshere

sunspot

sunspot

100

Name the five different kinds of objects that make up the solar system.

stars, planets, moons, asteroids, comets

100

The sun is mostly ___________

helium and oxygen

helium and hydrogen

hydrogen and nitrogen

hydrogen and oxygen

helium and hydrogen

200

What is a sunspot?

Dark area on the sun's surface that gives off less energy than the rest of the sun

200

What are the four inner planets?

Mercury, Venus, Earth, and Mars

200

Another name for a natural satellite is a(n) ________.

comet

moon

asteroid

solar system

moon

200

The planets, moons, and sun are part of the ______.

solar system

star

atmosphere

sunspot

solar system

200

The sun is the ____________ that the planets orbit.

solar system

star

atmosphere

sunspot

star

300

A(n) __________ is made of ice, rock, frozen gases, and dust.

comet

moon

asteroid

solar system

comet

300

The _________ is between Mars and Jupiter.

greenhouse effect

asteroid belt

planet

meteor

asteroid belt

300

What are the five outer planets?

Jupiter, Saturn, Uranus, Neptune, Pluto

300

The moon shines in the sky because ____________.

the moon is very hot

the moon produces its own light

the sun lights up part of the moon

the moon is a close star

the sun lights up part of the moon

300

A rocky object smaller than a planet is called a(n) _______.

comet

moon

asteroid

solar system

asteroid

400

The solar system is held together by __________.

gravity

mass

energy

gases

gravity

400

A(n) ______ is a large object that orbits a star.

greenhouse effect

asteroid belt

planet

meteor

planet

400

Venus has a hot surface temperature because of the ______.

greenhouse effect

asteroid belt

planet

meteor

greenhouse effect

400

What makes Earth unique compared to other planets?

Earth has a mild surface temperature, a dense atmosphere, and liquid water on its surface.  Earth alone can support life.

400

One of Jupiter's moons is as big as the planet Mercury.  If this moon is so big, why is it a moon and not a planet?

It is a moon because it orbits a planet, not a star.

500

Name the largest planet, colorful storm bands, rotates once in 10 hours, Great Red Spot, faint rings, at least 60 moons, one moon with active volcanoes

Jupiter

500
What is the difference between a star and a planet?

A star, made up of hot gases, makes its own light.  A planet does not make its own light.  

500

Name the planet that is very bright, rotates in opposite direction from other planets, day lasts 243 Earth days, much carbon dioxide in atmosphere, green house effect, very hot, rolling plains, towering highlands

Venus

500

The outer planets are very similar.  Give two features that they share.

They are made up of gas and liquid.  They have small, solid cores.  They are relatively large.  They have ring systems and thick, cloudy atmospheres.

500

Name the planet that is greenish blue, rotates on its side, ring system, at least 22 moons, year lasts 84 years, rotates once in 17 hours

Neptune

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