Quiz about Simple Machines

Question 1

The picture shows a part of a bicylce which is a ............... .

Accepted Answer

gear

Answer

whell and axle

Answer

lever

Answer

pulley

Question 2

Can you name this simple machine?

Accepted Answer

wheel and axle

Answer

lever

Answer

pulley

Answer

wedge

Question 3

This simple machine cut objects apart.

Accepted Answer

wedge

Answer

lever

Answer

pulley

Answer

inclined plane

Question 4

Stairs are a

Accepted Answer

inclined plane

Answer

wedge

Answer

pulley

Answer

wheel and axle

Question 5

A door knob is an example of ___________

Accepted Answer

wheel and axle

Answer

lever

Answer

pulley

Answer

wedge

Question 6

A worker is facing difficulty to carry boxes out of the lorry. Which simple machine can help the worker?

Accepted Answer

Inclined plane

Answer

Lever

Answer

Wedge

Answer

Gear

Question 7

All simple machines help make work _________.

Accepted Answer

easier

Answer

harder

Answer

smaller

Answer

lighter

Question 8

This simple machine allowed Elijah to lift a heavy rock.

Accepted Answer

lever

Answer

wedge

Answer

screw

Answer

inclined plane

Question 9

Name this simple machines

Accepted Answer

gear

Answer

wedge

Answer

screw

Answer

pulley

Question 10

Which is not a type of simple machine?

Accepted Answer

spring

Answer

screw

Answer

pulley

Answer

wedge

Question 11

This picture shows example of simple machine. What it is?

Accepted Answer

screw

Answer

lever

Answer

incline plane

Answer

wheel and axle

Question 12

Identify this simple machine

Accepted Answer

Wheel & Axle

Answer

Lever

Answer

Inclined Plane

Answer

Screw

Question 13

Which of these is not part of the lever?

Accepted Answer

wheel

Answer

Fulcrum

Answer

Load

Answer

Lever

Question 14

A door stop is an example of a

Accepted Answer

Wedge

Answer

Screw

Answer

Lever

Answer

Inclined Plane

Question 15

A seesaw is an example of a

Accepted Answer

lever

Answer

wedge

Answer

inclined plane

Answer

pulley

Question 16

The device used to raise a flag up a flag pole is an example of a

Accepted Answer

pulley

Answer

wheel and axle

Answer

lever

Answer

inclined plane

Question 17

A simple machine that splits an object apart is a

Accepted Answer

wedge

Answer

inclined plane

Answer

fulcrum

Answer

lever

Question 18

What type of simple machine is shown here?

Accepted Answer

Pulley

Answer

Wheel and Axle

Answer

Lever

Answer

Wedge

Question 19

This simple machine can hold things together or to lift an object.

Accepted Answer

Screw

Answer

Pulley

Answer

Wedge

Answer

Wheel and Axle

Question 20

What type of simple machine is this?

Accepted Answer

Inclined Plane

Answer

Wheel and Axle

Answer

Screw

Answer

Pulley

Question 21

How much work is produced when 350 N is used to move a car 5 m (W=Fd)?

Accepted Answer

1750 J

Answer

70 J

Answer

355 J

Answer

175 J

Question 22

If the weight of the block is 10N, how much force does one have to apply to lift it using this pulley (MA=2)?

Accepted Answer

5N

Answer

2N

Answer

10N

Answer

15N

Question 23

if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?

Accepted Answer

5 N

Answer

120 N

Answer

2000 N

Answer

80 N

Question 24

The amount by which a machine multiplies input force is known as the

Accepted Answer

mechanical advantage.

Answer

work.

Answer

power.

Answer

output force.

Question 25

Which of the lever would it take less force to lift?

Accepted Answer

Lever A

Answer

Lever B

Question 26

Is this an example of work?
A teacher applies a force to a wall and becomes exhausted.

Accepted Answer

False

Answer

True

Question 27

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

Accepted Answer

0 J

Answer

15 J

Answer

45 J

Answer

5 J

Question 28

Work done = Force x _________

Accepted Answer

a. distance

Answer

b. acceleration

Answer

c. velocity

Answer

d. speed

Question 29

The efficiency of a machine can be increased by reducing __________________________.

Accepted Answer

friction

Answer

effort

Answer

resistance friction

Answer

fulcrum

Question 30

The _________ of a machine is always less than 100%.

Accepted Answer

efficiency

Answer

mechanical advantage

Answer

friction

Answer

force

Question 31

All simple machines help make work _________.

Accepted Answer

easier

Answer

harder

Answer

smaller

Answer

lighter

Question 32

If the horse reared up on 2 legs what effect would it have on the pressure?

Accepted Answer

it will exert twice the pressure it did before

Answer

it will exert half the pressure it did before

Answer

it will exert the same pressure it did before

Answer

it will exert four times the pressure it did before

Question 33

What is the equation used to calculate pressure?

Accepted Answer

pressure=force/area

Answer

pressure= force/mass

Answer

pressure =mass/volume

Answer

pressure=area/force

Question 34

What is the unit of measurement for pressure?

Accepted Answer

pascal

Answer

grams

Answer

milliters

Answer

meters

Question 35

If an object is compressible, it can be squeezed to fit into a smaller space than it normally does.

Accepted Answer

True

Answer

False

Question 36

Hydraulic systems use ____________ to transfer force from one point to another.

Accepted Answer

Liquid

Answer

Solid

Question 37

Air is compressible, and water is incompressible.

Accepted Answer

True

Answer

False

Question 38

Where can you look on your car to see a good example of a basic piston- driven hydraulic system?

Accepted Answer

The brake system

Answer

The instrument panel

Answer

The radio system

Question 39

Which of the following is an example of a hydraulically operated machine?

Accepted Answer

A bulldozer

Answer

A wheel barrow

Answer

A laptop computer

Answer

A vacuum cleaner

Question 40

What does the subject of pneumatics study ?

Accepted Answer

The study of compressed gas energy converting to mechanical energy

Answer

The study of converting wind energy into electrical energy

Answer

The study of liquid energy converting to mechanical energy.

Answer

Non of the above

Question 41

The air used in a pneumatic system is

Accepted Answer

Totally compressible

Answer

Totally in compressible

Answer

Only compressible when mixed with water

Answer

Only compressible when mixed with oil.

Question 42

In Pneumatics what medium is used to transmit power?

Accepted Answer

Gas

Answer

Water

Answer

Oil

Answer

Gears

Question 43

Hydraulic systems use ________ to transfer force from one point to another.

Accepted Answer

Liquid

Answer

Air

Answer

Solid

Answer

Gas

Question 44

Air is compressible and liquid is incompressible.

Accepted Answer

True

Answer

False

Question 45

Where can you look on your car to see a good example of a basic piston-driven hydraulic system?

Accepted Answer

The brake system

Answer

The power steering system

Answer

The instrument panel

Answer

The radio system

Question 46

Define Ergonomics

Accepted Answer

The science of designing equipment and workplace for a comfortable and safe environment

Answer

The science of designing computers

Answer

This was not covered in lecture

Answer

The science of designing chairs

Question 47

3. Which type of lever is this?

Accepted Answer

First Class Lever

Answer

Second Class Lever

Answer

Third Class Lever

Question 48

6. What kind of lever is this?

Accepted Answer

Third Class Lever

Answer

First Class Lever

Answer

Second Class Lever

Question 49

What type of lever

Accepted Answer

Third Class Lever

Answer

First Class Lever

Answer

Second Class Lever

Question 50

What class lever does this picture show?

Accepted Answer

3rd

Answer

1st

Answer

2nd

Question 51

What class lever does this picture show?

Accepted Answer

2nd

Answer

1st

Answer

3rd

Question 52

What does this image represent?

Accepted Answer

A pulley

Answer

A wedge

Answer

A lever

Answer

A wheel and axle

Question 53

What are two types of pulleys?

Accepted Answer

fixed, movable

Answer

wings, fries

Answer

load. weight

Answer

effort, force

Question 54

A load of 650 newtons is lifted with this pulley. What is the effort required to do this work?

Accepted Answer

325

Answer

300

Answer

600

Answer

650

Question 55

In which situation will the pulley reduce the force needed to lift the load?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 56

Students pulled the same mass up an inclined plane that was 20 cm, 30 cm, and 40 cm long. Each time, they used a spring scale to measure the force needed to pull the mass up the inclined plane. What did they conclude?

Accepted Answer

The least amount of force was needed on the 40 cm inclined plane.

Answer

Less force was needed on the 20 cm plane

Answer

More force was needed on the 40 cm inclined plane.

Answer

The least amount of force was needed on the 30 cm inclined plane.

Question 57

How much force would be needed to lift the 150 N weight? Remember, you need to divide the original force by the number of pulleys.

Accepted Answer

75 N

Answer

300 N

Answer

150 N

Answer

25 N

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