1) Who discovered that galaxies are moving away from each other, showing that the universe is expanding? a) Albert Einstein b) Edwin Hubble c) Isaan Newton d) Galileo Galilei 2) What instrument did Edwin Hubble use to observe distant galaxies? a) Microscope b) Telescope c) Satellite d) Camera 3) What happens to light from a galaxy that is moving away from Earth? a) It becomes bluer b) It becomes redder c) It stops traveling d) It disappears 4) The redshift of galaxies means that: a) It becomes bluer b) It becomes redder c) It stops traveling d) It disappears 5) Which of the following best describes the Big Bang Theory? a) It explains that stars explode every night. b) It explains that the universe started small, hot, and has been expanding ever since. c) It explains how planets orbit around the Sun. d) It explains how galaxies stay in one place. 6) What is the name of the faint “afterglow” or radiation that scientists still detect from the early universe? a) Ultraviolet light b) Cosmic Microwave Background Radiation c) Radio waves d) Infrared Light 7) What does the Cosmic Microwave Background Radiation (CMBR) prove? a) The universe was once very cold. b) The universe has always been dark. c) The universe was once very hot. d) The universe never changed 8) When you blow air into a balloon with dots drawn on it, what happens to the dots? a) They move closer together. b) They move farther apart. c) They stay the same distance. d) They disappear. 9) How old is our according to our scientists? a) 4.5 billion years b) 10 billion years c) 14 billion years d) 100 million years 10) How do we know that we live in an expanding universe that was once hot and is about 14 million billion years old? a) Because we can see the edges of the universe b) Because of evidence like the redshift of galaxies, CMBR and Hubble’s discovery c) Because scientists guessed it using imagination d) Because stars move around randomly in space

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