Understanding Simple Machines: Screws and Pulleys
Interactive Video
•
Physics
•
6th - 8th Grade
•
Practice Problem
•
Hard
Nancy Jackson
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one of the main purposes of simple machines?
To make objects more colorful
To make objects heavier
To allow humans to lift heavier objects
To reduce the size of objects
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a common use of screws in everyday life?
To measure distances
To hold things together
To paint walls
To cut wood
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a screw jack lift heavy objects?
By using a magnetic field
By inflating a balloon
By spinning a screw to raise a platform
By using a hydraulic system
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of a pulley?
To compress materials
To rotate objects
To lift heavier loads than possible by hand
To push objects forward
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the lifting capacity of a pulley system be increased?
By using a thicker chain
By adding more pulleys
By using a longer rope
By reducing the weight of the object
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