1) Gravitational force acts between a) Like charges only b) Unlike charges only c) Any two masses d) Only the Earth and objects 2) Why does the moon stay in orbit around the earth instead of flying away? a) Air resistance keeps it close b) Gravitational force between Earth and Moon keeps it in orbit. c) Magnetic force pulls it towards Earth d) Electrostatic force holds it 3) Which of the following force can be both attractive and repulsive? a) Gravitational force   b) Muscular force c) Electrostatic force d) Frictional force 4) A metal spoon never gets charged like a balloon. Why? a) Metal is too heavy b) Gravity on metal is stronger c) Metal has no electrons d) Metal is a good conductor, so it loses charge quickly 5) Why can electrostatic force lift tiny objects but not heavy ones? a) Heavy objects are neutral b) Gravity on heavy objects dominates over electrostatic force c) Heavy objects repel the charge d) Electrostatic force works only on living things

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