Friction

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction

True or False: objects that are smooth have LESS friction than objects that are rough

• TRUE

• FALSE

What does friction produce?

• light
• sound
• heat
• gravity

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Which two of these forces act on parachutes?

• Air Resistance

• Gravity

• Thrust

• Kinetic Energy

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What causes an object to fall faster?

• Smaller surface area

• Larger surface area

• If it has a parachute

• If it is softer

Tags

NGSS.MS-PS2-2

The larger the surface area of the moving object, the ___________ air resistance there is.

• Less

• More

• Longer

• Quicker

Tags

NGSS.MS-PS2-2

Air resistance pushes against falling

objects and __________________.

• Speeds them up

• Keeps them afloat

• Slows them down

• Spins them

Tags

NGSS.MS-PS2-2

When dropped from the same distance, which will fall to the floor faster?

• 
• 

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2