1 What does CME stand for?A) Coronal Materials Ejections B) Central Mass Ejections C) Coronal Mass Ejections D) Coronal Mass Emissions 2 The Moon orbits Earth and Earth orbits the Sun. What does the Sun orbit?A) It doesn't orbit. B) the universe C) the solar system D) the Milky Way 3 The North Star,___________, is positioned almost directly over the North Pole.A) Betelgeuse B) Sirius C) Orion D) Polaris 4 A binary system is composed of ___________ stars.A) five B) three C) four D) two 5 Why are circumpolar constellations visible all year long?A) because they are the brightest stars B) All constellations are visible all year long. C) because they are the closest D) because they are located directly above the North Pole 6 When a star becomes a supernova its brightness __________.A) decreases B) increases C) doesn't change D) vanishes 7 What holds planets, stars, gas, and dust together in a galaxy?A) gravity B) inertia C) friction D) forces 8 Particles that escape from the sun's __________ move through space as solar wind.A) chromosphere B) surface C) corona D) photosphere 9 Astronomers use a star's __________ to determine how far it is from Earth.A) parallax B) brightness C) parallel D) size 10 The __________ __________of a star is a measure of the amount of light it gives off.A) apparent magnitude B) absolute solitude C) apparent strength D) absolute magnitude 11 The __________ __________ is a measure of the amount of light received on earth.A) absolute magnitude B) apparent magnitude C) absolute measure D) apparent measure 12 Another way to define "nebula" is __________.A) dying star B) old star C) exploding star D) young star 13 Prominence, or huge arching columns of gas, are thought to be caused by__________.A) the Sun's rotation B) the rotation of the galaxy C) the magnetic field associated with sunspots D) Earth's magnetic field 14 Our sun is considered a star of__________ temperature.A) cool B) hot C) low D) medium 15 Which, if any, of the three types of galaxies occur the most often?A) elliptical B) spiral C) They occur in equal amounts. D) irregular 16 Circumpolar constellations __________.A) are located in a circular constellation. B) appear to circle around the North Star as the Earth rotates. C) are always located above the North Pole. D) never appear around the North Pole. 17 When stars are located closer to one another, their attraction to one another increases due to __________.A) their temperature B) their weight C) their age D) gravity 18 Fusion occurs when __________ and __________ combine to make energy.A) carbon, oxygen B) carbon, helium C) hydrogen, oxygen D) hydrogen, helium 19 When fusion occurs, the mass lost is converted into __________.A) energy B) matter C) mass D) liquid 20 __________ is the process that creates energy in the sun.A) Blue shift B) Parallax C) Fusion D) Fission