Forces Interactive Lesson

Multiple Choice

A force is:

• push

• pull

• both

• none

Multiple Choice

The unit for force is:

• Centimeter(cm)

• Joule(J)

• Gram(g)

• Newton(N)

Multiple Choice

We describe a force by its

• Strength and direction

• Strength only

• Direction only

Multiple Choice

For an object to exert a contact force on another object, it must TOUCH that object

• True

• False

Multiple Choice

For an object to exert a distance force on another object, it must TOUCH that object

• True

• False

Multiple Choice

Which will exert the most FRICTION?

• Hardwood flooring

• Tile

• Concrete

• Carpet

Multiple Choice

Friction transforms kinetic energy into thermal energy

• True

• False

Multiple Choice

If I kick a soccerball to the right, friction acts

• To the left

• To the right

• Up

• Down

Multiple Choice

Electrical Force is a contact force

• True

• False

Multiple Choice

Magnetic Force is a distance force

• True

• False

Multiple Choice

The Law of Universal Gravitation says that any 2 objects in the universe that have MASS ________ each other.

• crush

• push

• attract

• move

Multiple Choice

Ms. Baughman's chair is attracting you toward it with its gravity.

• True. The chair has mass and you have mass so they attract each other.

• True. The chair has mass but you do not so it attracts you

• False. The chair is too small to have a mass.

• False. I do not feel the pull of the chair so it has no gravitational pull.

So why aren't we being crushed by the Sun's Gravity?

Because it is too far away!

The Sun has a huge amount of gravity! 28x as strong as Earth's gravity. The Sun is much larger than Earth, so it would make sense that the gravity of the Sun would pull us toward it. But since gravity depends on Mass AND distance, our planet being super far from the Sun keeps us safe!

Does that mean the Sun's gravity does not affect us?

NO! The Law of Universal Gravitation says that the Sun is pulling us toward it- this is why we orbit the sun every year. But the Sun is far enough away that we are only orbiting, rather than flying toward it!

Dwayne the Rock Johnson
Earth- Weight 118kg Mass 118kg

The Moon - Weight 20kg Mass 118kg

Mars - Weight 40kg Mass 118kg

Titan (Second largest moon in our galaxy): Weight 16kg Mass 118 kg

​

Mass & Weight on other planets With The ROCK

Dropdown

Weight​ depends on ​

Select answer

. Mass is the amount of ​

Select answer

in an object.

Weight ​

Select answer

if gravity changes.

Mass ​

Select answer

if gravity changes.

Multiple Choice

Gravity is a distance force

• True

• False

Categorize

Options (6)

Applied force

Normal force

Friction

Gravity

Magnetic Force

Electric Force

Organize these options into the right categories:

Contact Force

Distance Force