Quiz about Simple Machines: Levers

Question 1

An example of a lever is a ...

Accepted Answer

scissors

Answer

pulley

Answer

bicycle

Answer

screw

Question 2

For a lever to be a first class lever the fulcrum needs to be ..

Accepted Answer

between the load and the effort

Answer

on one side and the load and effort on the other side

Answer

on the same side as the load arm.

Question 3

A good example of a second class lever is the ...

Accepted Answer

Wheelbarrow

Answer

Can-opener

Answer

hammer

Answer

tongs

Question 4

A force multiplier is a simple machine that multiplies your ...

Accepted Answer

effort

Answer

strength

Answer

load

Answer

speed

Question 5

A lever is used to raised a 12 kilograms mass with a effort that is only 4 kilograms. What is the mechanical advantage ?

Accepted Answer

3

Answer

12

Answer

4

Answer

32

Question 6

Third class levers are said to be speed multipliers.
examples of third class levers include all of the below except .....

Accepted Answer

a door handle

Answer

baseball bat

Answer

tennis rachet

Answer

golf club

Question 7

Third class levers give a speed advantage because they...

Accepted Answer

the move a load through a large distance than the effort moves the same time

Answer

Moves an effort a further distance than the load

Answer

allow you to catch a fish quickly before you applied so much effort

Answer

allow you to pick up a heavy load quickly

Question 8

When you kick a ball the fulcrum is your ..

Accepted Answer

knee

Answer

foot

Answer

ball

Answer

leg

Question 9

Effort is

Accepted Answer

The force applied to a simple machine

Answer

An inclined plane wrapped around a rod

Answer

A unit used for measuring force

Answer

How far an object moves in a certain amount of time

Question 10

If the fulcrum is closer to the effort, it will take

Accepted Answer

more force to lift the load

Answer

less force to lift the load

Answer

equal force to the lift the load

Answer

no force to life the load

Question 11

Mechanical Advantage

Accepted Answer

reduces the effort needed to lift the load

Answer

gives the pulley a change in direction

Answer

neither

Question 12

A wheelbarrow is an example of

Accepted Answer

Second Class Lever

Answer

First Class Lever

Answer

Third Class Lever

Answer

Fourth Class Lever

Question 13

In a first class lever, the _____ is in the middle.

Accepted Answer

Fulcrum

Answer

Effort

Answer

Load

Answer

Machine

Question 14

In a second class lever, the ______ is in the middle.

Accepted Answer

Load

Answer

Effort

Answer

Fulcrum

Answer

Machine

Question 15

In third class levers, the ______ is in the middle.

Accepted Answer

Effort

Answer

Fulcrum

Answer

Load

Question 16

Which of the following does a simple machine NOT do?

Accepted Answer

Change the amount of work that needs to be done

Answer

Increase the force applied

Answer

Increase the distance the force is applied over

Answer

Change the direction the force is applied

Question 17

Which of these is not part of the lever?

Accepted Answer

Object

Answer

Fulcrum

Answer

Load

Answer

Lever

Question 18

The force placed on the simple machine to move the load is called the ____.

Accepted Answer

Effort

Answer

Fulcrum

Answer

Load

Answer

Lever

Question 19

Simple machines allow us to do less work.

Accepted Answer

FALSE

Answer

TRUE

Question 20

Simple machines make the work we have to do easier, but it is still the same amount of work.

Accepted Answer

TRUE

Answer

FALSE

Question 21

The unit of measure for work is_____________.

Accepted Answer

joules

Answer

meters

Answer

newtons

Answer

millibars

Question 22

The unit of measure for force is _____________

Accepted Answer

newtons

Answer

meters

Answer

joules

Answer

miles per hour

Question 23

True or False. The formula for work is Work = Force x Distance (W= F x D).

Accepted Answer

True

Answer

False

Question 24

Work is done when .....

Accepted Answer

a force is exerted on an object causing the object to move.

Answer

a force is exerted on an object.

Answer

an object exerts force onto another object.

Answer

an object does not move.

Question 25

A lever rotates on a fixed point called a _______________

Accepted Answer

fulcrum

Answer

screw

Answer

wheel

Answer

ramp

Question 26

wheelbarrows, fishing rods and baseball bats are all examples of ________________

Accepted Answer

levers

Answer

inclined planes

Answer

wedges

Answer

compound machines

Question 27

If you needed to use a lever to move a heavy object, where is the best place to place the load?

Accepted Answer

near the fulcrum.

Answer

next to where the force is applied

Answer

directly under the fulcrum

Answer

opposite end of the fulcrum

Question 28

A simple machine is a device that helps to reduce the amount of _____ required to work.

Accepted Answer

force

Answer

energy

Answer

work

Question 29

In a first-class lever, ...

Accepted Answer

the fulcrum is located between the effort and the resistance

Answer

the effort is located between the fulcrum and the resistance

Answer

the fulcrum is located at the end of the lever

Answer

the resistance is located between the fulcrum and the effort

Question 30

First- and second-class levers amplify effort or force. Third-class levers amplify ...

Accepted Answer

distance

Answer

friction

Answer

pitch

Answer

power

Question 31

A mechanical advantage of <1 indicates...

Accepted Answer

you are at a disadvantage when you use the machine

Answer

you are unable to determine just by the number value

Answer

the whole system is in balance

Answer

you are at an advantage when you use the machine

Question 32

A mechanical advantage of 1 indicates ...

Accepted Answer

the system is in balance

Answer

you are at an advantage when using the machine

Answer

you are unable to determine just by the number value

Answer

you are at a disadvantage when using the mcahine

Question 33

Which of the following would not be classified as a lever?

Accepted Answer

baseball

Answer

wheelbarrow

Answer

crowbar

Answer

tweezers

Question 34

The majority of the appendage-joint combinations in the human body ...

Accepted Answer

are 3rd class levers

Answer

are 2nd class levers

Answer

are 1st class levers

Answer

cannot be classified as a specific lever type

Question 35

Mechanical advantage is expressed ...

Accepted Answer

without any units

Answer

in newtons squared

Answer

in joules

Answer

in joules squared

Question 36

In a second-class lever, ...

Accepted Answer

the resistance is located between the fulcrum and the effort

Answer

the effort is located between the fulcrum and the resistance

Answer

the fulcrum is located between the effort and the resistance

Answer

the resistance is located at the end of the lever

Question 37

Which of the following items represents a second-class lever?

Accepted Answer

nutcracker

Answer

seesaw

Answer

tweezers

Answer

crowbar

Question 38

Work can occur without motion.

Accepted Answer

FALSE

Answer

TRUE

Question 39

A seesaw on a playground is an example of what type of simple machine?

Accepted Answer

lever

Answer

screw

Answer

wedge

Answer

wheel and axle

Question 40

Compound machines are made of _____.

Accepted Answer

two or more simple machines

Answer

one simple machine

Answer

two or more compound machines

Answer

one simple machine and one compound machine

Simple Machines: Levers

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