2nd 9 Weeks Science Test

Front

What is a light year?

Back

A distance unit used to measure how far light travels in one year.

Front

List the order of the planets starting from the closest to the sun.

Back

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

Front

Where is the asteroid belt located in the solar system?

Back

Between Mars and Jupiter.

Front

Which object in space is larger: Asteroid or Meteoroid?

Back

Asteroid.

Front

What are asteroids sometimes called?

Back

Minor planets or planetoids.

Front

What is the definition of a planet?

Back

A celestial body that orbits a star, is spherical in shape, and has cleared its orbit of other debris.

Front

What is the difference between a comet and an asteroid?

Back

Comets are icy bodies that release gas or dust; asteroids are rocky bodies that do not.

Front

What is the main component of the sun?

Back

Hydrogen, which makes up about 74% of its mass.

Front

What is gravity?

Back

A force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

What is the definition of a satellite?

Back

An object that orbits a planet.