Science Unit 4: Forces And Motion

Front 1

___________ is an objects location or where something is.

Back 1

Position

Front 2

___________ is a change in position.

Back 2

Motion

Front 3

Every motion is started and stopped by a ________________.

Back 3

force

Front 4

___________ is how fast an object changes position.

Back 4

speed

Front 5

___________ is a push or a pull.

Back 5

force

Front 6

Force is always needed to make something ____________.

Back 6

move

Front 7

A ______________ is a force that moves towards the object being moved.

Back 7

push

Front 8

A ______________ is a force that moves away from the object being moved.

Back 8

pull

Front 9

_____________ is a kind of force that pulls items toward the ground.

Back 9

Gravity

Front 10

___________________ is the force that slows down a moving object when it rubs against another object.

Back 10

Friction

Front 11

________________ is a force that pulls on, or attracts, metal objects containing iron.

Back 11

Magnetism

Front 12

_____________ means to use a force to move an object.

Back 12

Work

Front 13

A ____________________ is a machine with few or no moving parts. It makes a job easier to do.

Back 13

simple machine

Front 14

Name 6 kinds of simple machines:

Back 14

1) inclined plane
2) lever
3) wedge
4) pulley
5) screw
6) wheel and axle

Front 15

An _____________ is a flat surface that has one end higher than the other - a "ramp". It is used to lift an object to a higher place. It makes it easier to raise heavy loads.

Back 15

inclined plane

Front 16

A ______________uses a bar and fulcrum to lift a load.

Back 16

lever

Front 17

The ______________ is the stiff part of a lever that moves or turns.

Back 17

bar

Front 18

The ______________ is the part of a lever that stays in one place.

Back 18

fulcrum

Front 19

A _______________ has a V-shaped edge and is used to cut and split things.

Back 19

wedge

Front 20

A ______________ is a wheel that words with a rope or chain to move things up or down.

Back 20

pulley

Front 21

A ___________ is like an inclined plane wrapped around a center post.

Back 21

screw

Front 22

A _______________ holds things together.

Back 22

screw

Front 23

A _________________ is made of a wheel that turns on a center post.

Back 23

wheel and axle

Front 24

The wheel and axle makes it easier to ____________ things.

Back 24

turn and move

Front 25

_________________ are made up of simple machines that work together.

Back 25

complex machines

Front 26

What type of simple machines does a can opener have?

Back 26

1) lever (handle)
2) wedge ( sharp edge that cuts the can open)
3) axle (winding handle)

Front 27

What typeo of simple machines does a bicyle have?

Back 27

1) lever (break on handle bars)
2) wheel and axle (wheels)
3) pulley (chain)