A ramp is an __.

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Presentation transcript:

A ramp is an __

Inclined plane

A round wheel attached to a post

Wheel and axle

To use force to move an object

work

Two slanted sides that end in a sharp edge

wedge

A stiff bar that rests on a support

lever

A bicycle is an example of a __ machine

complex

A ___ is a machine that changes the direction of motion of an object to which a force is applied.

pulley

A wedge is an example of a __ machine.

simple

A ___ is an inclined plane wrapped around a center post.

screw

Which is a simple machine that allows you to hold things together Which is a simple machine that allows you to hold things together? A pulley a screw an inclined plane a wheel and axle

A screw

What can you do with a lever?

Lift up a box

Which simple machine is used to raise a flag on a flagpole?

A pulley

What type of simple machine is a screwdriver?

Wheel and axle

Which is a kind of a simple machine Which is a kind of a simple machine? Inclined plane wedge pulley wheel and axle

Inclined plane

What simple machine is a jar lid?

A screw

Which is not an example of work Which is not an example of work? Lifting a book drawing with a marker opening a door adding numbers in your head

Adding numbers in your head

What type of simple machine is a seesaw?

lever

What is the main purpose of a wedge?

To split an object apart

Examples of a complex machine..

Bicycle stapler scissors

Sam is helping his family load boxes into a truck Sam is helping his family load boxes into a truck. He lifts the box and puts it in the truck. Then he climbs in the truck to move it. What simple machine could he use?

An inclined plane. He wouldn’t have to keep getting up and down.

What simple machine can be used to keep a door propped open?

A wedge can be put between the door and the floor to keep the door open

You are trying to push a heavy box. The box does not move at all You are trying to push a heavy box. The box does not move at all. Are you doing work? Support your answer.

No work is done because the box did not move

Review

This is the state of matter in which the volume stays the same but the shape changes.

liquid

The energy of motion

kinetic

When a natural resource is ___, it means that we do not have a lot of it.

scarce

The state of matter in which the volume and shape stay the same.

solid

Something in nature that people use is known as __

resources

Which will a magnet most likely attract Which will a magnet most likely attract? Rubber eraser plastic cup chalk metal paper clip

Metal paper clip

What does a ruler measure?

distance

Which would require the least amount of force to move Which would require the least amount of force to move? A book a car a pencil a table

a pencil