Contact Force versus Non-contact Force

Which of the following is an example of a non-contact force?

• Pushing a book across a table

• Gravity pulling an apple downward

• Magnets attracting each other

• Riding a bike uphill

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NGSS.MS-PS2-4

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What type of force allows a magnet to attract a paperclip without touching it?

• Frictional force

• Magnetic force

• Gravitational force

• Electrostatic force

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When you rub a balloon against your hair and it sticks to a wall, what force is at work?

• Friction

• Electrostatic force

• Gravitational force

• Tension force

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

What type of force causes objects to fall towards the Earth's surface?

• Magnetic force

• Electrostatic force

• Frictional force

• Gravitational force

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NGSS.MS-PS2-4

What force allows a compass needle to point north?

• Gravitational force

• Magnetic force

• Tension force

• Electrostatic force

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NGSS.MS-PS2-3

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When two positively charged objects are brought close together, what force occurs?

• Frictional force

• Repulsion

• Attraction

• Gravity

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NGSS.MS-PS2-3

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Which of the following is an example of a non-contact force?

• Pushing a shopping cart

• Pulling a wagon

• A leaf falling from a tree

• Lightning during a storm

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NGSS.MS-PS2-5

When you shuffle your feet on a carpet and then touch a metal doorknob, what force causes a shock?

• Magnetic force

• Gravitational force

• Electrostatic force

• Buoyant force

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NGSS.MS-PS2-5

What force is responsible for the feeling of weightlessness experienced by astronauts in space?

• Frictional force

• Gravitational force

• Centripetal force

• Tension force

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When two magnets attract each other, what type of force is at work?

• Repulsion

• Electrostatic force

• Gravitational force

• Magnetic force

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NGSS.MS-PS2-3

NGSS.MS-PS2-5