Vocabulary
Space Objects
Planets
Misc.
100
The time it takes a planet to complete one revolution around the Sun.
What is a year.
100
A bowl-shaped hole formed when a space object hits a planet is called a(n)
What is a crater.
100
The planet with the largest orbit around the Sun.
What is Pluto.
100
A year on another planet may be shorter than a year on Earth because__________________.
The planet is closer to the Sun than Earth.
200
The path a planet takes as it revolves around the Sun.
Orbit
200
A huge ball of glowing gas that gives off light and heat.
What is a star.
200
Hard and rocky planets with craters and few moons.
What are the inner planets.
200
Since Earth is tilted on its axis and revolves around the sun, it has what?
What are seasons.
300
The force that keeps each planet in its path around the sun.
What is gravity
300
Frozen chunk of dust, ice, and gases that revolves around the Sun.
What is a comet.
300
Which four planets are known as the "gas giants"
What are Jupiter, Saturn, Uranus, and Neptune.
300
Since earth rotates on its axis, it has________________.
What is day and night.
400
The time it takes a planet to rotate once.
What is a day.
400
An object that travels around another object in space.
What is a satellite.
400
Which five planets are known as the "outer planets"
What are Jupiter, Saturn, Uranus, Neptune, Pluto
400
A star, and all the objects that travel around it is a _________________.
What is Solar System
500
Imaginary line around which a planet rotates.
What is an axis
500
Shooting stars are really what?
What are meteors.
500
List all nine planets in their order from the Sun.
What are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
500
What is a scale model?
A resource used to show relative size and distance.
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