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Exploring Our Solar System and Beyond

Physical Science

A set of easy, factual questions covering basic knowledge about planets, stars, and the universe.

space planets universe astronomy solar system
20 Questions Easy Ages 5+ Aug 14, 2026
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About this Study Set

This study set covers Physical Science through 20 practice questions. A set of easy, factual questions covering basic knowledge about planets, stars, and the universe. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 20 questions from the Exploring Our Solar System and Beyond study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which planet is known as the 'Red Planet'?
  • A Earth
  • B Mars
  • C Jupiter
  • D Venus
2 What is the largest planet in our solar system?
  • A Saturn
  • B Earth
  • C Neptune
  • D Jupiter
3 Which is the closest star to Earth?
  • A Proxima Centauri
  • B Sirius
  • C The Sun
  • D Alpha Centauri
4 What celestial body orbits the Earth?
  • A The Sun
  • B Mars
  • C The Moon
  • D Venus
5 Which planet is famous for its prominent rings?
  • A Jupiter
  • B Uranus
  • C Saturn
  • D Neptune
6 What is a collection of billions of stars, gas, and dust called?
  • A Planet
  • B Galaxy
  • C Nebula
  • D Asteroid
7 Which planet is the hottest in our solar system?
  • A Mercury
  • B Venus
  • C Earth
  • D Mars
8 What is the force that keeps planets in orbit around the Sun?
  • A Magnetism
  • B Gravity
  • C Friction
  • D Inertia
9 Which planet spins on its side?
  • A Venus
  • B Mars
  • C Uranus
  • D Neptune
10 What is the name of our galaxy?
  • A Andromeda
  • B Milky Way
  • C Triangulum
  • D Whirlpool
11 Which is the smallest planet in our solar system?
  • A Mars
  • B Mercury
  • C Pluto
  • D Venus
12 What are the giant balls of hot gas that produce light and heat called?
  • A Planets
  • B Moons
  • C Stars
  • D Comets
13 Which planet is known for its Great Red Spot, a giant storm?
  • A Saturn
  • B Jupiter
  • C Mars
  • D Neptune
14 What is the imaginary line that a planet spins on called?
  • A Orbit
  • B Axis
  • C Equator
  • D Meridian
15 Which planet is closest to the Sun?
  • A Venus
  • B Earth
  • C Mercury
  • D Mars
16 What is a natural satellite that orbits a planet called?
  • A Star
  • B Moon
  • C Comet
  • D Asteroid
17 Which planet is the only one known to have liquid water on its surface?
  • A Mars
  • B Venus
  • C Earth
  • D Europa (moon of Jupiter)
18 What are rocky objects that orbit the Sun, mostly found between Mars and Jupiter, called?
  • A Comets
  • B Meteors
  • C Asteroids
  • D Dwarf planets
19 Which planet is farthest from the Sun?
  • A Uranus
  • B Saturn
  • C Jupiter
  • D Neptune
20 What do we call the path a planet takes around the Sun?
  • A Rotation
  • B Revolution
  • C Axis
  • D Orbit
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