Multiple choice

Which objects in our solar system are made of ice, rocks, and dust and often look dirty?

  1. dwarf planets

  2. meteors

  3. comets

  4. asteroids
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Comets are cosmic snowballs of frozen gases, rock, and dust that orbit the Sun. Because of their composition and appearance, they are often colloquially referred to as 'dirty snowballs'.

Keep practicing — related questions