Simple machines

Wheels and axles

100

Example of a wheel and axle

cars, bikes, winch, door handle, fan, ferris wheel, pizza cutter, can opener

200

The purpose of wheels and axles

it makes it easier to move heavy loads from one place to another

300

Name one type of force associated with this simple machine

input force, output force, or friction

400

On a fan, is the input force is applied to the wheel. True or false.

False

500

This simple machine is a type of wheel and axle

a gear

Pulleys

100

Example of a pulley

flagpole, crane, elevator, exercise equipment, volleyball net pole, 

200

The purpose of a pulley

change the direction of the force to make it easier to lift heavy items

300

The force called that causes objects to fall towards the ground

gravity

400

Will a single pulley or a two-pulley system require MORE force to move a weight?

a single pulley

500

If we made a 5-pulley system it would be even easier to lift a weight than with the 2-pulley system. True or false.

True

Gears

100

Example of a gear

can opener, bike gears, engines, equipment, lego

200

The purpose of gears

to increase speed or increase force

300

Does a bigger gear or smaller gear turn faster?

smaller gear

400

Does a bigger gear or a smaller gear require LESS force to turn?

smaller gear

500

There is a set of gears. One has 5 cogs and the other has 10 cogs. If the one with 5 cogs rotates 1 time, how far will the gear with 10 cogs have rotated?

1/2 way around

Inclined planes

100

Example of an inclined plane

ramps, stairs, skate ramps, pyramids

200

The purpose of an inclined plane

makes it easier to move an object to a lower or higher height

300

Will an inclined plane with a steep slope or a inclined plane with a gentle slope be easier to push a heavy object up?

a gentle slope

400

The force created when two objects come in contact with each other is called...

normal force

500

Name an example of an inclined plane other than stairs, ramps, or skate ramps

slide, screw, wedge, roof, hill, ladder, pyramids

Other

100

This simple machine involves using ropes to lift objects

Pulley

200

This simple machine is often used in engines and machinery

Gear

300

This simple machine means we do not have to jump to get from the first floor to the second floor

Inclined plane

400

This simple machine is decreases friction

Wheel and axle

500

A push or pull on an object that causes it to move

Force/effort