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Year 7 physics revision

Total questions: 71

Worksheet time: 1hrs 8mins

Name
Class
Date
1.

Friction that acts on an object moving through the air

a)

Air resistance

b)

effort

c)

contact force

d)

non-contact force

2.

The point at which a falling object ceases to accelerate, but falls at a constant speed

a)

newton

b)

pulley

c)

friction

d)

terminal velocity

3.

The units that force is measured in

a)

newton

b)

grams

c)

gravity

d)

kilograms

4.

What sort of simple machine is this?

a)

inclined plane

b)

gears

c)

1st class lever

d)

2nd class lever

5.

What sort of simple machine is this?

a)

inclined plane

b)

gears

c)

1st class lever

d)

2nd class lever

6.

What sort of simple machine is this?

a)

inclined plane

b)

gears

c)

1st class lever

d)

2nd class lever

7.

Is this a first, second or third class lever?

a)

first

b)

second

c)

third

d)

fourth

8.

If my mass is 50kg, what is my weight on earth (g=9.8m/s/s)

a)

490 N

b)

490 kg

c)

59.8 kg

d)

59.8 N

9.

When an object reaches teminal velocity:

a)

It accelerates due to gravity

b)

It hits the ground at the fastest speed

c)

The force of gravity is greater than air resistance

d)

It falls at a constant speed

10.

A stationary object will

a)

move when it wants to.

b)

be affected by friction.

c)

be a house.

d)

remain stationary until a force acts upon it.

11.

The forces acting on an apple in free fall are

a)

Gravity and the normal force.

b)

Friction and the normal force.

c)

Gravity and air resistance.

d)

The force of the mind.

12.

Inertia is

a)

a force that opposes the resistance forces of an object.

b)

why we do not need seatbelts.

c)

every object's resistance to changing its speed and direction of travel.

d)

a village in Spain.

13.

TRUE OR FALSE: Unbalanced forces result in a change of motion.

a)

True

b)

False

14.

What is the difference between Weight and Mass?

a)

Weight stays the same; Mass depends upon gravity

b)

Mass and Weight both stay the same

c)

Mass and Weight both change due to gravity

d)

Mass stays the same; Weight depends upon gravity

15.

What is Friction ?

a)

The distance an object travels per unit of time

b)

Speed in a given direction

c)

Force that opposes motion

d)

Force that pulls objects towards each other

16.

What is the net force acting on the object? (Include units)

(a)  

17.

A 600kg spacecraft leaves Jupiter and travel to Earth. What is it's mass on Earth ?

a)

23 Kg

b)

23 N

c)

600Kg

d)

600 N

18.

Is the net force balanced or unbalanced?

a)

Balanced

b)

Unbalanced

19.
Which one is balanced?
a)
top
b)
bottom
c)
both
20.
Calculate the net force shown in the  diagram?
a)

6 N Left

b)
0 N
c)

3 N Left

d)

9N Left

21.
What is the unit for FORCE? 
a)
N (Newtons)
b)
lbs (pounds)
c)
g (grams)
d)
m/s (meters per second)
22.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
23.

A Load Is Often a...

a)

Weight, on a lever or material

b)

Force, on a lever or material

c)

Pulley, on a lever or material

d)

Cargo, on a lever or material

e)

Mass, On a lever or material

24.

A Type Of Inclined Plane

a)

Wedge

b)

Ramp

c)

Hill

d)

Screw

25.

The object above belongs to the type of lever type......

a)

1

b)

2

c)

3

d)

4

26.

The object above belongs to the type of lever type......

a)

1

b)

2

c)

3

d)

4

27.

What does this image represent?

a)

A pulley

b)

A wedge

c)

A lever

d)

A wheel and axle

28.

How do pulleys make work easier?

a)

they change the direction of a force

b)

they change the amount of force required

c)

the distance over which the force is applied

d)

the measurement of an object

29.
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?
a)
Less force was needed on the 20 cm plane
b)
More force was needed on the 40 cm inclined plane.
c)
The least amount of force was needed on the 40 cm inclined plane.
d)
The least amount of force was needed on the 30 cm inclined plane.
30.
An inclined plane reduces the amount of force needed to move an object by - 
a)
increasing the distance the object moves.
b)
transferring more of the force to the object
c)
reversing the direction the object is moved.
31.
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.
a)
300 N
b)
150 N
c)
75 N
d)
25 N
32.

In a simple machine, what is the load?

a)

point where the lever arm pivots

b)

the force needed to move the load

c)

the mass lifted by a system

d)

the distance the load travels

33.

A doorknob is an example of a _______.

a)

wheel and axle

b)

inclined plane

c)

pulley

d)

wedge

34.

The fixed point around which a lever rotates is know as the

a)

wheel.

b)

fulcrum.

c)

input force.

d)

output force.

35.

A simple machine that splits an object apart is a _______.

a)

inclined plane

b)

fulcrum

c)

wedge

d)

lever

36.

A ramp is an example of a(n) _______.

a)

inclined plane

b)

fulcrum

c)

force

d)

lever

37.

Which simple machine would be the MOST efficient for lifting an object 30 meters off the ground?

a)

pulley

b)

screw

c)

wedge

d)

lever

38.

The bow or front of a boat splits the water as the boat moves. What kind of simple machine would the bow of the boat be?

a)

wedge

b)

screw

c)

ramp

d)

lever

39.

Using the back of a hammer makes it much easier to remove a nail from a wooden board. What kind of simple machine would the hammer be classified as if you are using it for this purpose?

a)

Wedge

b)

Lever

c)

Pullye

d)

Inclined Plane

40.

Which of the following is NOT an example of the simple machine know as a screw?

a)

the lid of a jar

b)

a bolt

c)

a drill bit

d)

a crowbar

41.

A seesaw is what simple machine?

a)

lever

b)

inclined plane

c)

pulley

d)

gear

42.

A wheelbarrow is an example of a complex machine. Which simple machine is NOT found in this object?

a)

lever

b)

wedge

c)

wheel and axle

43.
Mechanical advantage is a measure of how much a machine multiplies the input
a)
efficiency.
b)
force.
c)
power.
d)
work.
44.

Used to move objects to a greater height.

a)

Screw

b)
Wedge
c)
Lever
d)
Inclined Plane
45.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
46.
A simple machine is a device that helps to reduce the amount of _____ required to work.
a)
force
b)
energy
c)
work
47.

a rigid bar resting on a pivot (the fulcrum) used to make moving objects easier, consist of an effort force, load, and fulcrum

a)

wheel and axle

b)

lever

c)

pulley

48.

consists of a flat surface at an incline (angle) that is used to move heavy objects to a higher level.

a)

wheel and axle

b)

lever

c)

inclined plane

49.

All simple machines do not require human energy to function.

a)

True

b)

False

50.

When we use a simple machine to move something, we actually need to go a greater distance to accomplish the same amount of work.

a)

True

b)

False

51.

Which type of simple machine is not found in scissors?

a)

Wedge

b)

Pulley

c)

Lever

52.

What class lever is pictured?

a)

Class 1

b)

Class 2

c)

Class 3

d)

Class 4

53.

This could be considered two types of simple machines, a lever and a ?

a)

Wedge

b)

Pulley

c)

Wheel & Axle

d)

Inclined Plane

54.

A broom most resembles which class of lever?

a)

Class 1

b)

Class 2

c)

Class 3

d)

Class 4

55.

Which of these pulley systems will have the least mechanical advantage?

a)

A

b)

B

c)

C

56.

The effort arm of a lever is also known as?

a)

The location of the output force

b)

Where the fulcrum starts

c)

The location of the input force

57.
WHAT ARE THE 3 MAIN PARTS OF A LEVER?
a)
FOOT, EFFORT, REPORT
b)
FULCRUM, STRUCTURE, EFFORT
c)
FULCRUM, EFFORT, LOAD
58.
In second class lever, the load is between the fulcrum and _______.
a)
Load
b)
Effort
c)
Stone
59.

What type of lever

a)

First Class Lever

b)

Second Class Lever

c)

Third Class Lever

60.
For a lever to be a first class lever the fulcrum needs to be ..
a)
between the load and the effort
b)
on one side and the load and effort on the other side 
c)
on the same side as the load arm. 
61.

This baseball BAT is demonstrating which type of lever at the shoulder?

a)

1st class

b)

2nd class

c)

3rd class

d)

4th class

62.

How many classes of levers are there?

a)

1

b)

2

c)

3

d)

4

63.

This object is a lever class number ...

a)

1

b)

2

c)

3

d)

No. It is not a lever.

64.
Simple machines make the work we have to do easier, but it is still the same amount of work.
a)
TRUE
b)
FALSE
65.

Which of the following is the definition of a 'lever'?

a)

Double inclined plane that moves through another object

b)

Simple machine that uses less effort over a longer distance

c)

A simple machine made of a beam and fulcrum

d)

Spiral shaped inclined plane that's designed to cut through another substance

66.

Which part is the 'load'?

a)

Arrow

b)

Yellow box

c)

Blue triangle

67.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
68.

What unit of measurement is used for mass in physics?

a)

Liter

b)

Kilograms

c)

Meters

d)

Newtons

69.

What statement is true?

a)

Mass never changes. Weight does.

b)

Weight never changes. Mass does.

c)

Both mass and weight change because they are affected by gravity.

d)

Neither mass nor weight change. They are always the same.

70.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
71.

Weight is the measure of the force of ______ on an object.

a)

Density

b)

Mass

c)

Matter

d)

Gravity

e)

Velocity

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