Name: __________________________________ Per: _________ VERSION A Unit 10 LC1: EM Spectrum, Galaxies, Light Year ______ 1. If the wavelength of an electromagnetic wave is longer, what is true about its energy? a) Energy is higher c) Energy is lower b) Energy stays the same d) Energy will double ______ 2. Which of the following electromagnetic waves has the lowest energy? a) Infrared b) Gamma c) Ultraviolet d) X-ray ______ 3. Which of the following best explains why people on Earth cannot see the entire shape of the Milky Way? a) Earth is a part of this galaxy b) Many more stars exist outside the galaxy c) The stars in the center of the galaxy are extremely small d) The center of the galaxy consists of a dense cluster of stars ______ 4. Which of the following questions is answered by Big Bang theory? a) How our planets and moon formed c) How the universe will meet its end b) How our universe began d) How fast light travels through space ______ 5. What unit is used to measure distances in space? a) Miles b) kilometers c) astronomical units d) light years ______ 6. A long wavelength will have a ________ frequency and _______ energy. a) High, low b) high, high c) low, low d) low, high ______ 7. What is the best evidence for the Big Bang theory? a) How fast light can travel c) The expansion of the Universe b) Creation of new planets d) NASA space program ______ 8. Proxima Centauri, our nearest star (after the Sun) is 4.3 light years away from us. What does it mean? a) Our spaceship can visit the star in 4.3 years. b) Light from Proxima Centauri takes 4.3 years to reach us. c) The distance between Earth and Proxima Centauri is 4.3 years. d) Proxima Centauri is closer to us than the Sun. We get light and heat from this star. ______ 9. Which is not a type of galaxy? a) Elliptical b) Spiral c) Oblong d) Irregular ______ 10. Which section of the EM spectrum is the ONLY one we can see? a) Radio waves b) Visible c) Ultraviolet d) Infrared ______ 11. What quantity does a light year measure? a) Distance b) Time c) Time d) Universe ______ 12. A light year is ___ a) The speed of light b) The distance light travels in a year c) How long it takes light to get to you from the Sun d) How many years it takes light to be emitted ______ 13. Earth’s atmosphere blocks short wavelengths of the electromagnetic spectrum. Which telescopes must be placed in orbit around Earth in order to observe short-wavelength radiation? a) Gamma ray telescope c) Visible light telescope b) Infrared telescope d) Radio telescope ______ 14. Which statement best describes a galaxy? a) A cloud of gas that is the birthplace of stars b) A system of billions of stars, gas, and dust held together by gravity c) A ball of plasma that experiences nuclear fusion in its core d) A mass of dust and ice that orbits a star in an elliptical pattern ______ 15. Which galaxy do we live in? a) Solar System b) Milky Way c) Andromeda d) M101 Pinwheel galaxy ______ 16. Which of the following is arranged in order of increasing size? a) universe < galaxy < solar system < planet b) solar system < planet < galaxy < universe c) planet < solar system < galaxy < universe d) planet < solar system < universe < galaxy ______ 17. Which type of galaxy is formed when two galaxies collide? a) Combination b) Spiral c) Elliptical d) Irregular ______ 18. We know the universe is expanding because the light from other galaxies is? a) red-shifted c). getting brighter b) violet-shifted d) getting dimmer ______ 19. Which of the following describes the big bang? a) all matter/energy in the universe expanded outward from a tiny area b) all matter/energy in the universe was created in its current location c) several galaxies collided together and exploded d) the Earth has gotten cooler since its original formation. ______ 20. A student uses the following characteristics to describe a group of objects in space: 200 billion stars 30 million light years from earth Elliptical in shape Which of the following is the student most likely describing? a) a galaxy b) the Universe c) a planet d) the solar system Name: __________________________________ Per: _________ VERSION B Unit 10 LC1: EM Spectrum, Galaxies, Light Year ______1 . Which of the following describes the big bang? a) all matter/energy in the universe expanded outward from a tiny area b) all matter/energy in the universe was created in its current location c) several galaxies collided together and exploded d) the Earth has gotten cooler since its original formation. ______2 . Earth’s atmosphere blocks short wavelengths of the electromagnetic spectrum. Which telescopes must be placed in orbit around Earth in order to observe short-wavelength radiation? a) Gamma ray telescope c) Visible light telescope b) Infrared telescope d) Radio telescope ______ 3. Proxima Centauri, our nearest star (after the Sun) is 4.3 light years away from us. What does it mean? a) Our spaceship can visit the star in 4.3 years. b) Light from Proxima Centauri takes 4.3 years to reach us. c) The distance between Earth and Proxima Centauri is 4.3 years. d) Proxima Centauri is closer to us than the Sun. We get light and heat from this star. ______4 . Which of the following questions is answered by Big Bang theory? a) How our planets and moon formed c) How the universe will meet its end b) How our universe began d) How fast light travels through space ______5 If the wavelength of an electromagnetic wave is longer, what is true about its energy? a) Energy is higher c) Energy is lower b) Energy stays the same d) Energy will double ______6 A student uses the following characteristics to describe a group of objects in space: 200 billion stars 30 million light years from earth Elliptical in shape Which of the following is the student most likely describing? a) a galaxy b) the Universe c) a planet d) the solar system ______7 . Which of the following is arranged in order of increasing size? a) universe < galaxy < solar system < planet b) solar system < planet < galaxy < universe c) planet < solar system < galaxy < universe d) planet < solar system < universe < galaxy ______8 . Which section of the EM spectrum is the ONLY one we can see? a) Radio waves b) Visible c) Ultraviolet d) Infrared ______ 9. What unit is used to measure distances in space? a) Miles b) kilometers c) astronomical units d) light years ______10 . We know the universe is expanding because the light from other galaxies is? a) red-shifted c). getting brighter b) violet-shifted d) getting dimmer ______ 11 A light year is ___ a) The speed of light b) The distance light travels in a year c) How long it takes light to get to you from the Sun d) How many years it takes light to be emitted ______12 . Which of the following electromagnetic waves has the lowest energy? a) Infrared b) Gamma c) Ultraviolet d) X-ray ______ 13. Which type of galaxy is formed when two galaxies collide? a) Combination b) Spiral c) Elliptical d) Irregular ______14 What quantity does a light year measure? a) Distance b) Time c) Time d) Universe ______15 . A long wavelength will have a ________ frequency and _______ energy. a) High, low b) high, high c) low, low d) low, high ______16 . Which of the following best explains why people on Earth cannot see the entire shape of the Milky Way? a) Earth is a part of this galaxy b) Many more stars exist outside the galaxy c) The stars in the center of the galaxy are extremely small d) The center of the galaxy consists of a dense cluster of stars ______17 . Which galaxy do we live in? a) Solar System b) Milky Way c) Andromeda d) M101 Pinwheel galaxy ______18 . Which is not a type of galaxy? a) Elliptical b) Spiral c) Oblong d) Irregular ______ 19. What is the best evidence for the Big Bang theory? a) How fast light can travel c) The expansion of the Universe b) Creation of new planets d) NASA space program ______ 20. Which statement best describes a galaxy? a) A cloud of gas that is the birthplace of stars b) A system of billions of stars, gas, and dust held together by gravity c) A ball of plasma that experiences nuclear fusion in its core d) A mass of dust and ice that orbits a star in an elliptical pattern
