Bill Nye - Friction

Firefighters use ________ to control how fast they slide down the pole.

• friction

• gravity

• a push or a pull

• inertia

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At the beginning of the program it states "Inertia is a property of matter." What is matter?

• anything that takes up space

• an object at rest will stay at rest unless an outside force is applied

• how much space an object takes up

• the amount of "stuff" on the inside

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To make a door open easier you need to _______.

• reduce friction

• increase friction

• pull harder

• pull easier

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On the "Friction Ramp of Science" Bill shows that friction can turn work into _______,

• heat

• cold

• a new substance

• something difficult

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The energy of rubbing is changed into the energy of ______.

• heat by friction

• heat by convection

• heat by condensation

• coldness by friction

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Why is a hover board able to glide across a smooth surface?

• Since the hover board doesn't touch the surface there is little friction.

• Since the hover board doesn't touch the surface there is alot of friction.

• Since the hover board doesn't touch the surface there is little inertia.

• Since the hover board doesn't touch the surface there is alot of inertia.

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The "trick" to barefoot skiing is to ________.

• reduce friction so you can glide over the water

• increase friction so you can glide over the water

• reduce friction so you can stop moving

• increase inertia so you can glide over the water

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What would happen if we did not have friction?

• We would be unable to stand up and walk.

• We would be able to bounce as high as we wanted.

• We would be able to float up into the clouds.

• We would not have any weight.

What is the best shape of an object to reduce friction?

• round

• square

• rectangular

• all shapes will have the same amount of friction

Apollo 17 space ship was burned coming back into Earth's atmosphere. What caused it to burn on the outside?

• Friction between the air and the space ship.

• Heat was transferred from the sun to the space ship.

• Heat was transferred from the space ship to the air.

• Friction between the space ship and radiation from the sun.

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