Friction — Quiz Answers

10 verified answers2 views
1
Free Preview

Which methods reduce friction?

A
increasing surface roughness
B
lubricating surfaces
C
increasing speed
D
using sticky materials
2
Free Preview

Aria is riding her bike. She is bent slightly over, holding onto her handlebars. She wants to go faster. Which best explains what she should do?

A
She should bend her hips so her head is closer to the handlebars.
B
She should flap her arms up and down like a bird.
C
She should spread her arms wide while sitting straight in her seat.
D
She should sit straight up on the bike, keeping her arms tight to her body.
3

Four students are doing different friction experiments with a cylinder. Tristan is working with static friction, Arya is working with sliding friction, Anoush is working with rolling friction, and Keran is working with fluid friction. Which most likely describes results from their experiments?

A
Tristan and Anoush would exert more energy to overcome friction than Arya and Keran.
B
Tristan and Arya would exert more energy to overcome friction than Anoush and Keran.
C
Tristan and Arya would exert less energy to overcome friction than Anoush and Keran.
D
Tristan and Keran would exert less energy to overcome friction than Arya and Anoush.
4

Myron was trying to light a match. The first time he struck the match, the match did not light. The second time he tried, the match lit successfully. Which most likely occurred to make the match light?

A
Myron increased the friction by decreasing the surface area.
B
Myron increased the friction by increasing speed.
C
Myron decreased the friction by making the match aerodynamic.
D
Myron decreased the friction by lubricating the match.
7

Which type of friction acts on an object that is not moving?

A
rolling friction
B
sliding friction
C
fluid friction
D
static friction
9

Which surface most likely has the least friction?

A
a water slide
B
a rocky path
C
a carpeted floor
D
a paved road
10

Joshua was driving to a friend’s house to study. During his trip, he started on pavement. At one point, he hit an ice patch on the road, but then he returned to pavement. The road then turned into a gravel road. Which best describes the frictional force of his trip?

A
Friction increased when he went from pavement to ice and then decreased one additional time.
B
Friction decreased when he went from pavement to ice and then increased two more times.
C
Friction decreased when he went from pavement to ice and then increased one additional time.
D
Friction increased when he went from pavement to ice and then decreased two more times.

Did you find these answers helpful?

Friction — Quiz Answers — Physical Science