Lesson Worksheet: Asteroids and Comets Science

In this worksheet, we will practice recalling what asteroids, comets, meteors, and meteorites are, what they are made of, and where they can be found.

Q1:

Complete the following sentence: There is a large number of asteroids between and .

  • AMars, Jupiter
  • BMercury, Venus
  • CVenus, Earth
  • DEarth, the Moon
  • EEarth, Mars

Q2:

Which of the following best describes the shape of the orbit that most comets follow?

  • AHighly elliptical
  • BCircular
  • CSlightly elliptical

Q3:

Complete the following sentence: is a large object made of ice and dust that orbits the Sun along a highly elliptical orbit.

  • AAn asteroid
  • BA comet
  • CA meteorite
  • DA meteor

Q4:

What are comets mostly made of?

  • AIron and nickel
  • BIce and dust
  • CRock

Q5:

Complete the following sentence: The band of asteroids that orbit the Sun between Mars and Jupiter is known as .

  • Athe asteroid layer
  • Bthe asteroid belt
  • Cthe asteroid zone

Q6:

Complete the following sentence: is a small rocky or metallic object that enters Earth’s atmosphere, heats up, and produces a streak of light across the sky but burns up before it can reach the ground.

  • AAn asteroid
  • BA meteor
  • CA meteorite
  • DA comet

Q7:

Complete the following sentence: is a small rocky or metallic object that enters Earth’s atmosphere, heats up, and hits the ground, making a crater.

  • AA comet
  • BA meteor
  • CA meteorite
  • DAn asteroid

Q8:

What are asteroids mostly made of?

  • AGas
  • BRock and metal
  • CLiquid water

Q9:

Approximately how many asteroids are there in the asteroid belt?

  • ASeveral million
  • BA few tens of thousands
  • CA few hundred thousand
  • DA few thousand

Q10:

The image below is a photo taken from the International Space Station, which orbits Earth at a height of about 400 km above the surface. The object in the pink circle is passing through Earth’s atmosphere. What kind of object is it?

Looking down on a shooting star,A meteor-added pink circle
  • AA meteor
  • BAn asteroid
  • CA comet

This lesson includes 11 additional questions for subscribers.

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