1) The force between two surfaces. a) Friction b) Air resistance c) Gravity d) Water resistance 2) Friction between air and an object. a) Buoyancy b) Friction c) Water resistance d) Air resistance 3) The force that pulls objects towards the centre of the Earth. a) Water resistance b) Gravity c) Air resistance d) Friction 4) The force present in water that stops boats sinking. a) Friction b) Gravity c) Air resistance d) Buoyancy 5) A force which slows moving objects down in water. a) Gravity b) Friction c) Buoyancy d) Water resistance

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