

Daya gesersn
Interactive Video
•
Science
•
6th - 8th Grade
•
Practice Problem
•
Hard
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is friction?
A force that causes objects to accelerate.
A force that is produced when two surfaces touch each other.
A force that pushes objects upwards.
A force that only acts on smooth surfaces.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which direction does friction act relative to the object's movement?
In the same direction.
Perpendicular to the direction.
Opposite to the direction.
It does not have a specific direction.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a beneficial effect of friction?
Worn shoe soles.
Loud noise from drilling.
Tire treads increasing grip on the ground.
Rusted screws becoming difficult to loosen.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a negative effect of friction?
An eraser removing pencil marks from paper.
Bicycle brakes slowing down and stopping a bicycle.
Sandpaper smoothing a rough wooden surface.
Engine parts wearing out due to repeated friction.
5.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Are you enjoying the video lesson?
Yes
No
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the two main factors that influence the amount of friction?
Temperature and color of the object.
Object's mass and type of surface.
Air pressure and humidity.
Object's speed and shape.
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