What is a force?

What is a Force?

How can we change the movement of an object?

In Motion or Still?

• An object is anything you can point to.

• Objects are made of matter.

• All objects are in motion or still.

• An object in motion is moving.

• A still object is not moving.

Multiple Choice

Anything you can point to is ____.

• An object

• A force

Multiple Choice

All objects are made of ___.

• Matter

• Energy

• Forces

Dropdown

An object that is moving is called ​

Select answer

,

but an object that is not moving is called ​

Select answer

.

Dropdown

A parked car is ​

Select answer

, but a car driving on the highway is ​

Select answer

.

Dropdown

A ball bouncing on the court is ​

Select answer

,

but a ball sitting on the shelf is ​​

Select answer

.

Categorize

Options (8)

A driving car

A parked car

A bouncing ball

A ball on a shelf

A flying plane

A landed plane

A running man

A sitting man

Organize these options into the right categories

In Motion

Still

Pushes and Pulls

• To make a still object move, we need to apply a force.

• A force can be a push or a pull.

• A pushing force moves an object away from you.

• A pulling force moves an object towards you.

Multiple Choice

To make a still object move, we need to apply ____.

• A force

• Sunscreen

• Early

Dropdown

A ​

Select answer

moves an object away from you,

but a ​

Select answer

moves an object towards you.

Dropdown

A pull moves an object ​

Select answer

you,

but a push moves an object ​

Select answer

you.

Dropdown

What force is this?

This force is a

Select answer

because the lawn mower is moving ​

Select answer

him.

Dropdown

What force is this?

This force is a

Select answer

, because the rope is moving ​

Select answer

them.

Open Ended

"The person is _____ the cart,

so it is moving _____ them."

Force Strength

• A force can feel strong or weak.

• A strong force will move an object more than a weak force.

• We use the word "exert" to describe an object applying a force.

• The tall boy exerts more force on the ball than the short boy.

• The snow plow exerts more force than the shovel.

Multiple Choice

Which force will move an object more?

• A strong force

• A weak force

Multiple Choice

Which force will move an object less?

• A strong force

• A weak force

Multiple Choice

A child and an adult each pull on a wagon's handle.

Which one will probably exert more force?

• The child

• The adult

Multiple Choice

A snow plow and a person each push a pile of snow.

Which one will probably exert more force?

• The snow plow

• The person

Open Ended

At field day, students of all ages get a chance to hit the carnival machine with a mallet.

Who do you predict will earn a higher score - the kindergartners or the 5th graders?

"I predict the ___ will earn a higher score because ___."

Force Strength

• The force needed to move an object depends on its mass.

• A stronger force is needed to move an object with high mass than an object with low mass.

Multiple Choice

Which cart needs more force to move?

• The empty cart

• The full cart

Multiple Choice

A team of dogs pull a full sled and an empty sled.

Which one needs a stronger force to move?

• The full sled

• The empty sled

Multiple Choice

A train and a bicycle are about to collide.

Which one needs less force to turn?

• The train

• The bicycle

Force Strength

• The force needed to move an object depends on its mass.

• An equal force will move an object with a low mass farther than an object with a high mass.

Multiple Choice

If you push them equally hard,

which cart will move farther?

• The empty cart

• The full cart

Multiple Choice

You push a scooter and a truck with the same amount of force.

Which one will move farther?

• The scooter

• The truck

Multiple Choice

A team of dogs pull a full sled and an empty sled.

If they use the same amount of force, which sled will move farther?

• The full sled

• The empty sled

Open Ended

You throw a basketball and a bowling ball with an equal amount of force.

Which one will move farther?

"I predict the ____ will move farther because ____."