Friction and Gravity

What is Friction?

• a type of force that pulls everything to the ground

• a push or a pull on an object

• a force between two objects rubbing that slows them down

Tags

NGSS.3-PS2-1

What is Gravity?

• a type of force that pulls everything to the ground

• a push or a pull on an object

• a force between two objects rubbing that slows them down

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which surface has more friction?

• a hardwood floor

• cement

• carpet

Which surface has less friction?

• a grassy field

• a dance floor

• a parking lot

Which object will require more force to move?

• a basketball

• a soccer ball

• a bowling ball

Tags

NGSS.MS-PS2-2

The heavier and object, the ______ it will fall.

• slower

• faster

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Why do smoother surfaces allow objects to move across quicker?

• smooth surfaces have more friction

• smooth surfaces require more force.

• smooth surfaces have less friction