1) The force which make everything fall down on the Earth is called _____________ a) Balance b) Gravity c) Energy d) Falling force 2) Who is the first scientist mathematical describe gravity ? a) Archimedes b) Leonardo Da Vinci c) Izzac Newston d) Aristotle 3) If a person weighed 100 pounds on Earth their weight on planet Mars would be just 38 pounds because there is less gravity a) True b) Fall 4) If a person weighed 100 pounds on Earth their weight on planet Mars would be just 38 pounds because there is less gravity a) Motion b) Weigh c) Planet d) Paterns 5) What do we call the force of gravity on an object? a) Weight b) Mass c) Acceleration 6) Where would you weight the most ? a) Pluto b) Earth c) Sun d) Moon 7) What natural phenomena occurs on Earth due to the gravity of the Moon? a) Earthquakes b) Ocean tides c) Volcanic eruption d) Hurricanes

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