This quiz works best with JavaScript enabled. Home > Science > Physics > Solar System – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Solar System Quiz 41 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is NOT part of our solar system? A) The moons around Jupiter. B) Asteroids and meteoroids. C) Comets. D) Stars that are not the Sun. Show Answer Correct Answer: D) Stars that are not the Sun. 2. The orbital motions of the objects in the solar system are the direct result of which of the following features of the Sun? A) Its chemical composition. B) Its gravitational pull. C) Its brightness. D) Its magnetic field. Show Answer Correct Answer: B) Its gravitational pull. 3. How many planets orbit the Sun in our solar system? A) 5. B) 6. C) 7. D) 8. Show Answer Correct Answer: D) 8. 4. A group of solar systems that are held together by gravity and classified by shape is called a(n) A) Solar eclipse. B) Star. C) Galaxy. D) Asteroid. Show Answer Correct Answer: C) Galaxy. 5. Without gravity, what would be the shape of the solar system? A) Planets would revolve in perfect circles. B) Much different than it is now. C) Planets' orbits would cross. D) All planets would be in the same orbit. Show Answer Correct Answer: B) Much different than it is now. 6. What are the terrestrial planets? A) Jupiter, Saturn, Uranus, Neptune. B) Mercury, Venus, Earth, Mars. C) Mercury, Earth, Mars, Neptune. D) Jupiter, Saturn, Earth, Neptune. Show Answer Correct Answer: B) Mercury, Venus, Earth, Mars. 7. Earth completes one full ..... on its axis every 24 hours. A) Rotation. B) Revolution. C) Resolution. D) Reservation. Show Answer Correct Answer: A) Rotation. 8. What is the nickname of Mercury, Venus, Earth, and Mars? A) Rocky planets. B) Rock stars. C) First four. D) Final four. Show Answer Correct Answer: A) Rocky planets. 9. Primarily why was differentiation possible on Early Earth but not today? A) Old rocks floated. B) Different laws of physics. C) Change in the size of the Earth. D) Molten state (Earth was melted). Show Answer Correct Answer: D) Molten state (Earth was melted). 10. The bright streak of light that we call a shooting star is actually A) A meteoroid going through radioactive decay. B) A meteoroid disturbing Earth's magnetic field. C) A meteoroid reflecting the Sun's rays to Earth. D) A meteoroid entering the atmosphere and burning up. Show Answer Correct Answer: D) A meteoroid entering the atmosphere and burning up. 11. Which is the warmest planet? A) Mercury. B) Venus. C) Earth. D) Mars. Show Answer Correct Answer: B) Venus. 12. Which of the following characteristics do all of the inner planets share? A) They have rocky surfaces. B) They each have many moons. C) They are larger and more massive that the sun. D) They have thick atmospheres of hydrogen and helium. Show Answer Correct Answer: A) They have rocky surfaces. 13. Which of these is found in the center of our solar system? A) Sun. B) Jupiter. C) Earth. D) Pluto. Show Answer Correct Answer: A) Sun. 14. Which of these lists the outer planets in order of their distance from the Sun (nearest to farthest)? A) Jupiter, Saturn, Uranus, Neptune. B) Mars, Jupiter, Saturn, Uranus. C) Jupiter, Uranus, Neptune, Saturn. D) Mercury, Venus, Earth, Mars. Show Answer Correct Answer: A) Jupiter, Saturn, Uranus, Neptune. 15. Why do scientists use scale to study the Solar System? A) The solar system is too large to study without using scale. B) The solar system is too small to study without using scale. C) Scientists don't need to use scale because we have satelites. D) All of the above. Show Answer Correct Answer: A) The solar system is too large to study without using scale. 16. He believed the planets orbit the sun in an elliptical orbit. A) Galileo. B) Kelper. C) Copernicus. D) Ptolemy. Show Answer Correct Answer: B) Kelper. 17. How long is Earth's period of rotation? A) 60 minutes. B) 365.25 days. C) 30-31 days. D) 24 hours. Show Answer Correct Answer: D) 24 hours. 18. What is a common characteristic of the inner planets? A) Gaseous. B) Distance between them is longer. C) Rings. D) Distance between them is shorter. Show Answer Correct Answer: D) Distance between them is shorter. 19. What is one fact about Venus? A) It is the hottest of the planets. B) It has 2 irregularly shaped moons. C) Its atmosphere can support life. D) It was discovered in 1846. Show Answer Correct Answer: A) It is the hottest of the planets. 20. What is the name often given to the four outer planets? A) Terrestrial planets. B) Gas giants. C) Inner planets. D) None of above. Show Answer Correct Answer: B) Gas giants. ← PreviousNext →Related QuizzesScience QuizzesSolar System Quiz 1Solar System Quiz 2Solar System Quiz 3Solar System Quiz 4Solar System Quiz 5Solar System Quiz 6Solar System Quiz 7Solar System Quiz 8Solar System Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books