Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password

Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Question

What example results in a helpful increase of friction?
click to flip
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know

Question

What example results in a helpful decrease of friction?
Remaining cards (18)
Know
0:01
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

7Sci Chapter 17 Sec3

Matter in Motion - Friction:A Force that Opposes Motion

QuestionAnswer
What example results in a helpful increase of friction? sand applied to a slick sidewalk
What example results in a helpful decrease of friction? oil added to a car engine
What is a force that opposes motion between two surfaces that are in contact? friction
Name two factors that determine the amount of friction. the force and the roughness of the surface
What is an example of an object opposed by kinetic friction? a box sliding on a floor
What is an example of an object opposed by static friction? a worker pushing on a non-moving box
Name an activity where friction is helpful. car tires moving a car forward
Name an activity where friction is harmful. car engine parts wearing out
What is a way NOT to reduce friction? pouring sand on ice
When a mover puts furniture on a dolly with wheels, which type of friction is the mover using to make his job easier? rolling kinetic friction
Why does friction occur? the roughness of any object's surface
What is a way to reduce friction? wax skis before skiing down a slope
What is friction? a force that always acts to oppose motion
When is friction greater? when surfaces have more roughness
What happens when force is applied to two surfaces in contact? when force is applied, friction increases
When a teacher tries pushing a large desk slowly across the classroom floor, but the large desk will not move, what is keeping the desk from moving? static friction
When two students help the teacher push a large desk slowly across the classroom floor, what resistance opposes the faster movement of the desk? sliding kinetic friction
When the teacher and students get a dolly to move a large desk, what force of resistance opposes the motion of the desk? rolling kinetic friction
Name three common items you might use to increase friction. sand, work gloves, and sticky tape
Created by: masonteach
Popular Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards