Simple Machines - Grade 2

Energy stored in an object is called what?

potential energy

What force is being used here?

pull

Animals and humans have these wedges built in to help them eat. What are they?

teeth

What is another name for an inclined plane?

ramp

How are screws helpful?

A screw can be twisted into an object to connect it to another object.

What is a lever? Describe it.

A bar that sits on top of a fixed point.

Draw a screw.

Where is the bear?

under / below

What tool is used to SLICE food?

knife

Pulleys change the direction of the force. This makes it a lot _______ to lift and move objects.

easier

Name this inclined plane: You use this to "go down" on the playground.

slide

What is a wedge? Describe it...not a potato

two inclined planes placed back-to-back

Unscramble this pulley.

L I N D B S

BLINDS

Energy at work or when an object is moving is called?

kinetic energy

What happens to the wheel when the axle is turned?

The wheel moves/turns too!

What school supply is a lever?

scissors

What school supply is an example of a wedge?

sharpener

Other than a screw, give an example of something that has a screw mechanism.

-

Using an inclined plane instead of lifting an object straight up makes it feel _______.

easier or lighter

GIve an example of a wheel and axle.

-

What do use use a wedge for? Again, not a potato

to cut, split or slice things

Draw a lever

Unscramble this thing that has a wheel and axle.

B K I E

BIKE

What movements can a ball do? There are 4.

1. Roll

2. Slide

3. Bounce

4. Spin

What happens when you pull one end of the rope?

The other end is lifted up

A staircase is like an inclined plane, but it has these on them.

steps or stairs

What is a screw? Describe it.

A cylinder with an inclined plane wrapped around it.

What tool is used to CHOP wood?

An axe

Why are wheels and axles important for a car to have?

So that they can move!

Unscramble the name of this lever.

L O S V E H

SHOVEL

Draw a pulley. Label it.

Draw a wheel and axle and label it.

Unscramble this pulley.

V A T E L E T O R

ELEVATOR

To use a lever, the ______ is applied to one end of the beam and a ______ is at the other end.

load and effort

What materials are used to make a pulley?

A wheel and rope

The closer the fulcrum is to the load, the work feels _________.

easier

What is the difference between these inclined planes?

The 3rd is steeper than the first and second.

Which simple machine is used in a doorknob?

screw