This quiz works best with JavaScript enabled. Home > Science > Physics > The Universe – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books The Universe Quiz 20 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Planets that have many moons, are considered huge, and are spread very far apart, belong to which group? A) Outer planets. B) Inner planets. C) The asteroid belt. D) None of above. Show Answer Correct Answer: A) Outer planets. 2. Makes up about 10% of the mass of a galaxy. A) STARS, GAS & DUST. B) DARK MATTER. C) ENERGY. D) MATTER. Show Answer Correct Answer: A) STARS, GAS & DUST. 3. What is a supernova? A) A formation of a galaxy. B) An explosion of a huge star. C) The outer portion of a black hole. D) A type of star. Show Answer Correct Answer: B) An explosion of a huge star. 4. The main elements in a star's composition are ..... and ..... A) Hydrogen, helium. B) Carbon, helium. C) Hydrogen, iron. D) Helium, dark matter. Show Answer Correct Answer: A) Hydrogen, helium. 5. Which of the following correctly lists the components of the universe in order from least to greatest? A) Galaxy, nebula, star, planet. B) Star, planet, nebula, galaxy. C) Planet, star, nebula, galaxy. D) Planet, nebula, star, galaxy. Show Answer Correct Answer: C) Planet, star, nebula, galaxy. 6. The sun appears to be big and bright but it's actually a medium size star. It only seems big to us because it is the ..... star to Earth A) Most luminous. B) Biggest. C) Warmest. D) Closest. Show Answer Correct Answer: D) Closest. 7. Why is it considered inappropriate to use light years to measure distances within our solar system? A) The light year is too big. B) The solar system is to small. C) Light doesn't travel in our solar system. D) We only use light years to measure sizes, not distances. Show Answer Correct Answer: A) The light year is too big. 8. An interstellar cloud of dust and gases that serves as a location for the formation of new stars is A) A meteor. B) A planet. C) A galaxy. D) A nebula. Show Answer Correct Answer: D) A nebula. 9. A light year is approximately A) 600 miles. B) 600, 000 miles. C) 6 million miles. D) 6 trillion miles. Show Answer Correct Answer: D) 6 trillion miles. 10. Which structure includes all matter and space that exists? A) A planetary system. B) A star. C) A galaxy. D) The universe. Show Answer Correct Answer: D) The universe. 11. Which phenomenon was observed by Edwin Hubble that was used to explain the expansion of the universe. A) Conservation of momentum. B) Redshift. C) Photons. D) Gravitational pull. Show Answer Correct Answer: B) Redshift. 12. Which best explains why the moon has phases? A) How much of the sunlit side of the moon faces Earth. B) The sun's position changes in relation to the moon and Earth. C) The Earth casts a shadow on the moon as it rotates. D) The moon rotates along its axis. Show Answer Correct Answer: A) How much of the sunlit side of the moon faces Earth. 13. Our nearest star neighbor, Proxima Centauri, is 4 light years away from Earth. How old is the light by the time we see it? A) 4, 000 years-old. B) 400 years-old. C) 4 years-old. D) 40 years-old. Show Answer Correct Answer: C) 4 years-old. 14. Light Years are a measure of ..... A) Time. B) Speed. C) Distance. D) Light. Show Answer Correct Answer: C) Distance. 15. Earth's rotation takes about A) 365 days. B) 6 months. C) 24 hours. D) 1 month. Show Answer Correct Answer: C) 24 hours. 16. Edwin Hubble discovered that the universe is expanding from his observation of ..... A) Photons. B) Red Shifts. C) Gravitational Pull. D) Conservation of Momentum. Show Answer Correct Answer: B) Red Shifts. 17. What is a planetary system? A) A cluster of planets. B) Planets that orbit a star (or stars). C) A star (or stars) that orbit a large planet. D) A group of extraterrestrial objects (such as asteroids) that orbit a planet. Show Answer Correct Answer: B) Planets that orbit a star (or stars). 18. Which of the following are types of electromagnetic radiation? A) Infrared. B) Gamma Rays. C) Visible Light. D) All of these. Show Answer Correct Answer: D) All of these. 19. Which one is the correct order from hottest to coolest stars? A) Blue, yellow, orange, red. B) Red, orange, yellow, blue. C) Blue, red, yellow, orange. D) Yellow, blue, orange, red. Show Answer Correct Answer: A) Blue, yellow, orange, red. 20. Space and all the matter and energy in it is ..... A) Universe. B) Galaxy. C) Solar System. D) Ecosystem. Show Answer Correct Answer: A) Universe. ← PreviousNext →Related QuizzesScience QuizzesThe Universe Quiz 1The Universe Quiz 2The Universe Quiz 3The Universe Quiz 4The Universe Quiz 5The Universe Quiz 6The Universe Quiz 7The Universe Quiz 8The Universe Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books