1) Provide the term for the following definition: the force that attracts objects towards one another, especially the force that makes things fall to the ground. a) Mass b) Weight c) Gravity d) Object 2) What is mass measured in? a) Grams b) Mililitres c) Kilometres d) Kilograms 3) What is weight measured in? a) Newtons b) Kilograms c) Mass d) Joules 4) What is the centre of gravity called? a) Mass b) Object c) Point d) Centre 5) True or false: mass remains the same regardless of the object's location. a) True b) False 6) True or false: the gravitational force on the moon is strong.  a) True b) False 7) Who was the first person to walk on the moon? a) Buzz Aldrin b) Charles Conrad c) Alan Bean d) Neil Armstrong 8) True or False: The gravitational pull of the Sun, keeps the Earth orbiting around the Sun. a) True b) False 9) The __________ gravity affects the ocean tides, causing the ocean tides to rise and fall.  a) Earth's b) Moon's c) Sun's 10) True or false: high tide is experienced when the moon is directly opposite your location on Earth.  a) True b) False

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