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8th Grade Science Q1

Total questions: 60

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

The relationship between electricity and magnetism

a)

Electricity

b)

Magnetism

c)

Electromagnetism

d)

Gravitational Pull

2.

A physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects.

a)

electricity

b)

magnetism

c)

electromagnetism

d)

Gravitational pull

3.

A soft metal core made into a magnet by the passage of electric current through a coil surrounding it.

a)

Generator

b)

Solenoid

c)

Tesla Coil

d)

Electromagnet

4.

A machine for converting mechanical energy into electricity.

a)

Generator

b)

Transformer

c)

Motor

d)

Turbine

5.

An electrical machine that converts electrical energy into mechanical energy.

a)

Windmill

b)

Turbine

c)

Electric Motor

d)

Electric Generator

6.

A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

a)

Magnetic Field

b)

Magnetic Forcefield

c)

Magnetic Force

d)

Zone of Magnetism

7.

A push or a pull

a)

Force

b)

Inertia

c)

Domain

d)

Velocity

8.

A force applied to an object by another body that is not in direct contact with it.

a)

Contact Force

b)

Noncontact Force

c)

Magnetic Force

d)

Attractive Force

9.

The sum of all of the forces acting on an object. If it is in the same direction, you will add; if it is in opposite directions, you will subtract.

a)

Force

b)

Total Force

c)

Net Force

d)

Air Force

10.

A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

a)

Inertia

b)

Acceleration

c)

Attraction

d)

Velocity

11.

The amount of matter within an object.

a)

Weight

b)

Mass

c)

Atomic Number

d)

Density

12.
What do you call a change in an object's position?
a)
Force
b)
Motion
c)
Gravity
d)
Speed
13.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
14.
Which would require the most force to move?
a)
a toy car
b)
a sleeping cat
c)
a science book
d)
a chair with a friend sitting in it
15.
Is gravity a push or a pull?
a)
push
b)
pull
c)
neither
d)
both
16.
_____ is the force that slows and stops motion between touching objects.
a)
Friction
b)
Gravity
c)
Pull
d)
Push
17.

What causes objects to move?

a)

Balanced forces

b)

Unbalanced forces

c)

Zero Gravity

d)

Inertia

18.

A rocket's action is to push down on the ground with the force of its powerful engines. The reaction is that the ground pushes the rocket upwards with an equal force, but opposite in direction. Which law best explains this event?

a)

1st Law - The Law of Inertia

b)

2nd Law - The Law of Acceleration

c)

3rd Law - The Law of Action/Reaction

d)

The Law of Gravity

19.

What unit is used to measure force?

a)

inches

b)

centimeters

c)

grams

d)

Newtons

20.

Which law of motion?

It is harder to push a full grocery cart than an empty grocery cart.

a)

1st Law - Law of Inertia

b)

2nd Law - Law of Acceleration

c)

3rd Law - Law of Action/Reaction

d)

Law of Gravity

21.

Which law of motion?

A car stops suddenly. The passengers are thrown forward until they are caught by their seatbelts.

a)

1st law - Law of Inertia

b)

2nd Law - Law of Acceleration

c)

3rd Law - Law of Action/Reaction

d)

Law of Gravity

22.

Any change in an object's speed or direction

a)

Inertia

b)

Force

c)

Acceleration

d)

Reaction

23.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
24.

Speed is how fast an object is moving while velocity is

a)

speed with acceleration

b)

speed with a direction

c)

speed of an object plus the mass

d)

speed of an object plus the gravity

25.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
26.
Which direction will the object move?
a)
Up
b)
Down
c)
Right
d)
Left
27.

What is this?

A car is traveling 50 mph.

a)

Speed

b)

Velocity

c)

Acceleration

28.

What is this?

"This airplane is traveling at 500 mph, West"

a)

Speed

b)

Velocity

c)

Acceleration

29.

What is this?

"Rocky is running 8mph North"

a)

Speed

b)

Velocity

c)

Acceleration

30.

What is this?

a)

Speed

b)

Velocity

c)

Acceleration

31.

What is this?

a)

Speed

b)

Velocity

c)

Acceleration

32.

You push a couch to the right with a force of 20N. Your dad helps you push the couch to the right with a force of 40 N. What is the net force on the couch?

a)

60 N right

b)

20N left

c)

60 N left

d)

20 N right

33.

What is the net force?

a)

20 N left

b)

0 N Balalnced

c)

20 N right

d)

40 N right

34.

How will this object move?

a)

0 N Left

b)

20N Right

c)

80N Right

d)

80N Left

35.
In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N. What is the resultant force?
a)
50N to the left.
b)
350N to the left.
c)
350N to the right.
d)
50N to the right.
36.

What is the net force?

a)

400 N Up

b)

400 N Down

c)

800 N Up

d)

800 N Down

37.
If you increase the mass on an object, its acceleration
a)
decreases
b)
stays the same
c)
also increases
d)
stops
38.

How much force is needed to accelerate a 25kg bowling ball at 2m/s2.

a)

50N

b)

5N

c)

12.5N

d)

100N

39.

If a 2kg bird is pushed by the wind with a force of 2N, how fast does the bird accelerate?

a)

1 m

b)

2 m/s2

c)

4m/s2

d)

1 m/s2

40.
If you increase the force on an object, its acceleration? 
a)
decreases
b)
stays the same
c)
also increases
d)
stops
41.

An object with a force of 12N is accelerating at 6m/s2. What is the mass of the object?

a)

2Kg

b)

72Kg

c)

0.5Kg

d)

18Kg

42.

What is the equation for Force?

a)

mass times acceleration

b)

force divided by mass

c)

force dividied by acceleration

d)

mass divided by acceleration

43.

What is the equation for Mass?

a)

mass times time

b)

force divided by mass

c)

force dividied by acceleration

d)

mass divided by acceleration

44.

What is the equation for Acceleration?

a)

mass times time

b)

force divided by mass

c)

force dividied by acceleration

d)

mass divided by acceleration

45.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
46.
This type of force is an attraction between two objects
a)
contact
b)
gravity
c)
friction
47.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
48.
The graph represents
a)
no motion
b)
Constant velocity
c)
Acceleration
d)
negative acceleration
49.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

50.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
51.
Measure mainly of the nuclear particles: protons + neutrons
a)
Subatomic Particles
b)
Atomic Number
c)
Atomic Mass
d)
Gluons
52.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
53.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
54.
The smallest particle of an element that shows all the properties of that element.
a)
Subatomic Particles
b)
Atom
c)
Quarks
d)
Gluons
55.
Where electrons are likely to be found as they travel around the nucleus
a)
Nucleus
b)
Electron Cloud
c)
Within a Proton
d)
Within a Neutron
56.
The nucleus of an atom is made of
a)
electrons and protons
b)
electrons and neutrons
c)
protons and neutrons
d)
empty space
57.

Which part of the diagram represents the proton?

a)

a

b)

b

c)

c

d)

d

58.
How many protons does Boron have?
a)
5
b)
11
c)
6
59.
How many electrons does Sodium have?
a)
11
b)
23
c)
12
60.

Which TWO particles can be changed within an element without changing what the element is?

a)

Neutrons

b)

Electrons

c)

Protons

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