Unit 9 PreAssessment

Front

What are asteroids primarily made of?

Back

Asteroids are primarily made of rock and metal.

Front

What shape is the Kuiper belt and the Oort cloud?

Back

The Kuiper belt is donut-shaped, and the Oort cloud is spherical.

Front

Identify the celestial object: 1–Moon, 2–planet, 3–comet, 4–asteroid, 5–meteoroid, 6–Sun.

Back

1 is the Moon, 2 is a planet, 3 is a comet, 4 is an asteroid, 5 is a meteoroid, and 6 is the Sun.

Front

What force causes the motion of comets, asteroids, and meteors in our solar system?

Back

The gravity of the Sun and nearby celestial objects.

Front

What are the two main physical characteristics used to classify planets?

Back

Inner/outer planet and terrestrial/gaseous planet.

Front

What is the difference between a comet and an asteroid?

Back

Comets are made of ice and dust, while asteroids are made of rock and metal.

Front

What is the Oort cloud?

Back

The Oort cloud is a spherical shell of icy objects that surrounds the solar system.

Front

What is the Kuiper belt?

Back

The Kuiper belt is a region of the solar system beyond Neptune, filled with small icy bodies.

Front

What is a meteoroid?

Back

A meteoroid is a small rocky or metallic body in outer space.

Front

What happens when a meteoroid enters Earth's atmosphere?

Back

It becomes a meteor, often producing a bright streak of light.