This quiz works best with JavaScript enabled. Home > Science > Physics > Solar System – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Solar System Quiz 30 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Why is a year on Mars longer than a year on Earth? A) Mars is farther from the Sun than Earth. B) Mars has a thinner atmosphere than Earth. C) Mars has a greater axial tilt than Earth. D) Mars has a longer period of rotation than Earth. Show Answer Correct Answer: D) Mars has a longer period of rotation than Earth. 2. Which planet contains the Great Red Spot? A) Neptune. B) Saturn. C) Earth. D) Jupiter. Show Answer Correct Answer: D) Jupiter. 3. There are ..... planets in our solar system. A) 6. B) 7. C) 8. D) 9. Show Answer Correct Answer: C) 8. 4. Which planet has the Great Red Spot? A) Pluto. B) Uranus. C) Jupiter. D) Earth. Show Answer Correct Answer: C) Jupiter. 5. People see different phases of the moon, because A) The Moon is a flat surface. B) The Moon is sometimes behind clouds. C) The Moon revolves around the Earth. D) The Moon changes its shape. Show Answer Correct Answer: C) The Moon revolves around the Earth. 6. The sun and all of the bodies that revolve around it is the ..... A) Planet. B) Comet. C) Solar System. D) Asteroid. Show Answer Correct Answer: C) Solar System. 7. What planet is 6th from the sun? A) Earth. B) Neptune. C) Venus. D) Saturn. Show Answer Correct Answer: D) Saturn. 8. To escape Earth's gravity and establish an orbit around the Earth, a spaceship has to reach A) Exceptional Velocity. B) Escape Velocity. C) Orbital Velocity. D) The speed of sound. Show Answer Correct Answer: C) Orbital Velocity. 9. The largest volcano in the Solar System is called Olympus Mons. Where is it? A) Earth. B) Jupiter. C) Venus. D) Mars. Show Answer Correct Answer: D) Mars. 10. Now that Pluto is no longer included, how many planets are there in the Solar System? A) 4. B) 9. C) 2. D) 8. Show Answer Correct Answer: D) 8. 11. What do Jupiter, Saturn, Uranus, and Neptune have in common? A) They all have rocky surfaces. B) They all appear to be similar to Earth. C) They all are gaseous planets. D) They all appear to be made of rock and ice. Show Answer Correct Answer: C) They all are gaseous planets. 12. Which planet is the only planet that spins on its side as it orbits the Sun? A) Mercury. B) Neptune. C) Venus. D) Uranus. Show Answer Correct Answer: D) Uranus. 13. Which type of planets were the first to form? A) Inner Planets. B) Outer Planets. C) The Planets formed randomly. D) None of above. Show Answer Correct Answer: B) Outer Planets. 14. How long does Earth's orbit around the sun take? A) 365 and 1/4 days. B) 360 days. C) 24 hours. D) 2 years. Show Answer Correct Answer: A) 365 and 1/4 days. 15. Which statement is NOT true about Pluto? A) It has been reclassified to be called a dwarf planet. B) Its orbit is at an angle to the orbits of the 8 planets. C) It is the 9th planet. D) It sometimes is closer to the sun than Neptune is. Show Answer Correct Answer: C) It is the 9th planet. 16. The smallest and nearest planet to the sun-because of this planets very thin atmosphere, it scorching hot on the side facing the sun and freezing cold on the side that faces away A) Mercury. B) Venus. C) Earth. D) Mars. Show Answer Correct Answer: A) Mercury. 17. Because of both gravity and centripetal force, planets move in a particular manner around the sun. Which term describes the shape of the orbit of a planet? A) Circle. B) Ellipse. C) Perihelion. D) Sphere. Show Answer Correct Answer: B) Ellipse. 18. A ..... is a huge system of gas, dust, stars, and objects orbiting stars that is held together by the force of gravity. A) Galaxy. B) Comet. C) Meteor. D) Gas giant. Show Answer Correct Answer: A) Galaxy. 19. Which term best describes the shape of the orbits of planets in our solar system? A) Centripetal. B) Circular. C) Elliptical. D) Spherical. Show Answer Correct Answer: C) Elliptical. 20. Which type of planet is mostly composed of rock and metal? A) Inner Planet. B) Outer Planet. C) Gas giants. D) Mini Planet. Show Answer Correct Answer: A) Inner Planet. ← 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