Grade 4 Science Quiz: Pulleys and Gears

Quiz by Arie Rosenberg

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20 questions
• Q1

Force is:

a machine that produces motion or power for doing work

to move something into or out of a particular position

a push or a pull; a natural power or effect that is able to change the speed or direction of something

an imaginary line around which an object rotates

30s
• Q2

A motor is:

a machine that produces motion or power for doing work

a complete turn that is made by something around its centre point or line

energy used to do something or complete work

something, such as a good position or condition, that helps to make someone or something better or more likely to succeed than others

30s
• Q3

Torque is:

speed

a complete turn that is made by something around its centre point or line

an axle

a force that causes something to rotate

30s
• Q4

a force that causes something to rotate

a push or a pull; a natural power or effect that is able to change the speed or direction of something.

the amount of work done or expected to be done

a group of gears working together to accomplish work

30s
• Q5

Effort is

a complete turn that is made by something around its centre point or line.

energy used to do something or complete work

something, such as a good position or condition, that helps to make someone or something better or more likely to succeed than others.

30s
• Q6

Work is

a lever

a group of gears working together to accomplish work

force applied over a distance

30s
• Q7

A gear train is

a group of levers

a train that delivers gears

a group of gears working together to accomplish work

30s
• Q8

Axis means

a machine for chopping trees

an imaginary  line around which an object rotates

wheel

lever

30s
• Q9

Revolution means

wheel

a complete turn that is made by something around its centre point or line

the natural power that is able to change the speed or direction of something

produces power

30s
• Q10

something that makes someone or something less likely to succeed

to increase force

something, such as a good position or condition, that helps to make someone or something better or more likely to succeed than others

to increase speed

30s
• Q11

Both pulleys and gears can give you a mechanical advantage.

true
false
True or False
30s
• Q12

There are three types of pulleys: fixed, moveable, and compound.

true
false
True or False
30s
• Q13

Fixed pulleys give you a mechanical advantage while moveable pulleys can only change the direction of a force.

false
true
True or False
30s
• Q14

You can calculate the mechanical advantage of a pulley system by measuring the amount of rope used.

false
true
True or False
30s
• Q15

When you get a mechanical advantage from a pulley system, the trade off is that you will have to pull more rope to lift the load.

true
false
True or False
30s

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