1) The apparent shape of the Moon in the sky is called a a) planet b)  crescent c)  phase d) satellite 2) The Northern Hemisphere experiences winter when ............ a) it is tilted away from the Sun b) it is tilted toward the Sun c) Earth is farthest away from the Sun d) Earth is closest to the Sun 3) Gravity and inertia together keep Earth in a) rotation b) orbit c) revolution 4) Earth spins on an imaginary line called its a) hemisphere b) meridian c) axis d) rod 5) About how long does the Moon take to revolve around Earth? a) one day b) 14 days c) 29 days d) 365 days 6) Which explains how gravity works to assist the flight of an airplane? a) It pulls the airplane downward when the pilot slows the engine's speed. b) It pushes the airplane from all directions to help it stay in the air. c) It pushes up on the wings of the airplane to create lift. d) It helps to propel the plane forward as its speed increases. 7) What force makes an apple fall to the ground? a) gravity b) air resistance c) size d) weight 8) Which would be the most likely outcome of a meteorite's encounter with Earth? a) The meteorite hits Earth and makes a crater. b) The meteorite burns in Earth's atmosphere. c) The meteorite flies past Earth. d) The meteorite orbits around Earth. 9) Because the tilt of Earth’s axis always points in the same direction, the seasons in the Northern Hemisphere and the Southern Hemisphere are always a) opposite b) the same c) three months apart d) six months apart 10) Which would happen if Earth was not tilted toward or away from the Sun? a) Days and nights would be about equal in length. b) Days would be much longer and nights would be shorter. c) Daylight would last all day. d) Darkness would last all day. 11) When it is winter in the Northern Hemisphere, which season is it in the Southern Hemisphere? a) summer b) spring c) fall d) winter 12) A force of attraction between any two objects is called a) gravity b) rotation c) static electricity d) orbit 13) A chunk of rock from space that travels through Earth's atmosphere is called a Blank______. a) meteor b) asteroid c) meteoroid d) comet 14) Earth’s gravity pulls objects toward its a) center b) axis c) moon d) orbit 15) Earth completes one full _____on its axis every 24 hours. a) rotation b) revolution c) resolution d) reservation 16) When the lit part of the Moon grows larger, it is in the __________phase. a) waxing b) waning c) the first quarter d) the last quarter 17) The tilt of Earth’s ______ affects the seasons. a) axis b) poles c) equator d) core 18) When the Moon appears completely dark with no lit part visible from Earth, it is called a a) new moon b) full moon c) waning gibbous moon d) old moon

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