What is motion?, When something stays still, When something changes position, When something disappears, What is speed?, How fast something moves, The weight of something, The size of something, What is direction?, How heavy something is, Which way something moves, How loud something is, What is force?, A push or a pull, A type of animal, A colour, What is gravity?, A force that pushes things up, A force that pulls things toward the Earth, A type of energy from the Sun, What is air resistance?, Air helping objects move faster, Air slowing down moving objects, Air changing colour, What is friction?, A force that makes things slide faster, A force between two surfaces that slows movement, A force that makes objects lighter, What is an unbalanced force?, Equal forces that cancel each other out, Forces that change an object's motion, No movement at all, What is a balanced force?, Forces that are equal and do not change motion, One strong force only, No forces at all, What is inertia?, The force that pulls objects down, The tendency of an object to stay still or keep moving, The speed of an object

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