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FORCES AND MAGNETISM

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    Forces are pushes or pulls that make objects move, stop, or change direction. Magnetism is a force that attracts or repels certain objects, like iron, without touching them.
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  • Which force pulls objects toward the Earth?
    Gravity
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  • What force helps an airplane stay in the air?
    Lift
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  • Which force slows down a moving object?
    Friction
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  • Friction makes it easier for objects to slide. True or False
    False
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  • A boat floats on water because of upthrust. (True or False)
    True
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  • Air resistance helps a parachute slow down. (True or False)
    True
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  • The force that makes a magnet attract iron objects and repels same poles called __
    magnetic force
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  • How does friction help us walk?
    Friction between our shoes and the ground stops us from slipping.
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  • Question: Who discovered gravity?
    Sir Isaac Newton
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  • How did Sir Isaac Newton discover gravity?
    Sir Isaac Newton discovered gravity when he saw an apple fall from a tree. He realized that a force must be pulling objects toward the Earth.
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  • A magnet can attract all types of metals. (True or False)
    False
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  • The normal force always acts in the same direction as gravity. (True or False)
    False
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  • When two forces are balanced, an object will stay still or continue moving at the same speed.(True or False)
    True
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  • You are riding a bicycle, and you suddenly hit the brakes. What force stops the bicycle?
    Friction
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  • You drop a ball from a tall building. Why does the ball fall downward instead of floating?
    Gravity pulls the ball down.
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  • Which type of force is a non-contact force? (A. Applied Force B. Friction C. Magnetic Force)
    Magnetic Force
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