Friction

What is the effect of friction on a moving object?

• It increases its speed

• It decreases its speed

• It has no effect

• It changes its direction

Answer explanation

Friction opposes the motion of a moving object, causing it to lose energy and slow down. Therefore, the correct answer is that friction decreases its speed.

Tags

NGSS.MS-PS3-5

Which surface would have the least amount of friction?

• A road

• A carpet

• An ice skating ring

• Astro turff

If you wanted to increase the friction between two sliding surfaces, what could you do?

• Make the surfaces smoother

• Lubricate the surfaces

• Make the surfaces rougher

• Cool the surfaces down

Tags

DOK Level 2: Skill/Concept

Which surface would have the most amount of friction?

• A road

• Carpet

• An ice skating ring

• Astro turf

What is the role of friction in everyday life?

• It only causes problems

• It helps in walking and driving

• It is not present in everyday life

• It only occurs in machines

Answer explanation

Friction is essential in everyday life as it provides the grip needed for walking and driving. Without friction, we would slip and be unable to control our movements effectively.

What is the primary cause of friction between two surfaces?

• The roughness of the surfaces

• The color of the surfaces

• The temperature of the surfaces

• The weight of the surfaces

Which of the following is a method to reduce friction?

• Using lubricants

• Increasing the surface area

• Increasing the weight

• Using rough surfaces

In which scenario is friction beneficial?

• When trying to slide a heavy box

• When walking on a slippery surface

• When driving a car

• When using a skateboard

What type of friction occurs when an object is moving through a fluid?

• Static friction

• Sliding friction

• Rolling friction

• Fluid friction

How does friction affect the energy of a moving object?

• It increases the object's energy

• It decreases the object's energy

• It has no effect on the object's energy

• It changes the type of energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5