Forces

The force that opposes motion between surfaces in contact is

• gravity
• balanced force
• friction
• static friction

How is friction created? 

• When 2 surfaces rub against eachother
• When you eat soup 
• When you fall on your kitchen floor

What is force?

• A push exerted on an object
• A push or pull exerted on an object
• A pull exerted on an object
• Nothing

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What makes a rolling ball stop moving?

• gravity
• friction
• a balanced force

Examples of forces that make something move are...

• pushes
• pulls
• both pushes and pulls

More force is needed to move __________ objects than to move light objects.

• big
• heavy
• square
• round

The pulling force that we cannot see that exists between any two objects is __________. It keeps us on the ground.

• gravity
• magnetism
• friction
• rough

The force that occurs when one object rubs against another object is called ________.

• gravity
• friction
• magnetism
• rough

There is very little friction between ____________ or slippery surfaces.

• smooth
• rough
• hard
• soft

There is more friction between _________ surfaces.

• smooth
• slippery
• hard
• rough