wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Grade 8 Semester Test 2 - Review

Total questions: 115

Worksheet time: 58mins

Name
Class
Date
1.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
2.
A substance in which all the atoms are the same
a)
colloid
b)
homogeneous mixture
c)
solution
d)
element
3.
Which of the following is an element?
a)
Sugar
b)
Salt
c)
Water
d)
Oxygen
4.
A combination that can be separated by physical processes is a .....
a)
Pure Substance
b)
Glucose
c)
Element
d)
Mixture
5.
Changing the phase, size or shape of something....
a)
Chemical change
b)
Physical Change
c)
Suspension
d)
Colloid
6.

___________ are the smallest unit of an element that maintains the properties of that element.

a)

Atoms

b)

Elements

c)

Compounds

d)

Mixtures

7.
Jorge prepared a drink and salad for dinner. The chart lists the ingredients for both.
Using the information in the chart, which statement is the BEST description of the drink and salad?
a)
The salad and fruit drink are both mixtures.
b)
The salad and the fruit drink are both solutions.
c)
The fruit drink is a mixture because the ingredients can't be separated.
d)
The salad is a solution because the ingredients can't be separated.
8.

The amount of space that matter occupies:

a)

Mass

b)

Volume

c)

Weight

d)

Density

9.
If a substance has a large mass and a small volume, what can you conclude about it?
a)
It's very dense
b)
It will float on water
c)
It is made out of rock or metal
d)
it has a low density
10.
What is the difference between weight and mass?
a)
Weight depends on gravity and mass is constant
b)
Weight depends on density and mass depends on gravity
c)
Weight depends on gravity and mass depends on volume
d)
Mass depends on gravity and weight is constant
11.
If an object's mass is 50 g, and its volume is 10 cm3, what is its density?
a)
5 g/cm3
b)
500 g/cm3
c)
60 g/cm3
d)
40 g/cm3
12.
Density is dependent on mass and ___________________
a)
weight
b)
volume
c)
height
d)
length
13.

What does a chemical change result in?

a)

A phase change (ex. solid to liquid)

b)

A change in the way atoms are bonded together

c)

A change in how close together atoms are

d)

A change in size

14.

Which of the following is an example of a physical change?

a)

Baking a birthday cake

b)

Burning a piece of paper

c)

A glass falling and shattering on the floor

d)

Baking soda and vinegar mixing together

15.

Does the following picture represent a chemical or physical change?

a)

Chemical

b)

Physical

c)

Both

16.

What is Sublimation?

a)

Solid—>Liquid

b)

Liquid—>Solid

c)

Air—>Solid

d)

Solid—>Air

17.

What causes a change in the states of matter?

a)

Light

b)

Energy

c)

Pressure

18.

If a liquid turns into a gas, what is happening to the amount of energy in the liquid?

a)

It is decreasing

b)

It stays the same

c)

It is increasing

19.

If a liquid turns into a solid, what is happening to the energy in the liquid?

a)

It is decreasing

b)

It stays the same

c)

It is increasing

20.

The atom is mostly large empty space with a small, dense nucleus at the center

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

21.

What scientist proposed this atomic model?

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

22.

What is the atomic number?

a)

the number of protons in the nucleus

b)

the number of neutrons in the nucleus

c)

the number of protons and neutrons in the nucleus

d)

the number of protons in the energy levels

23.

What is the mass number?

a)

the number of protons in the nucleus

b)

the number of neutrons in the nucleus

c)

the number of protons and neutrons in the nucleus

d)

the number of protons and electrons in the atom

24.

If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?

a)

12 neutrons

b)

12 protons

c)

12 electrons

d)

24 protons and neutrons

25.

Which elements have the most similar chemical properties?

(use your periodic table)

a)

K and Na

b)

K and Cl

c)

K and Ca

d)

K and S

26.

How are elements ordered on the Periodic Table?

a)

Alphabetical Order

b)

By their atomic mass.

c)

By their color.

d)

By their atomic number.

27.

Rows on the period table are called _____ while columns are called _____.

a)

groups, families

b)

periods, groups

c)

groups, periods

d)

families, groups

28.

Metals generally have the following properties EXCEPT for being:

a)

Shiny

b)

Malleable

c)

Non-conductors

d)

Ductile

29.

Nonmetals do NOT have which of the following characteristics:

a)

Shiny

b)

Brittle

c)

Many are gasses

d)

Good insulators

30.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
31.
The gravitational force of any object near Earth's surface is ____.
a)
unknown
b)
friction
c)
Newton's first law
d)
9.8 m/s2
32.
When the net force is zero, the forces on an object are balanced. True or false.
a)
true
b)
false
33.
What must occur to a shopping cart at rest in order to make it roll forward?
a)
A force must be provided to overcome gravity.
b)
Balanced forces must be acting on the cart.
c)
An unbalanced force applied to the cart pushing or pulling it forward.
d)
The unbalanced force acting upon it must be smaller than that of friction.
34.
What is the unit used to measure force? 
a)
Pounds 
b)
Grams 
c)
Newtons 
d)
kg/ m2
35.

A push or pull that causes an object to move, stop, or change direction.

a)

force

b)

friction

c)

gravity

d)

weight

36.

The ability to do work or cause change

a)

motion

b)

energy

c)

force

d)

power

37.

The change in position relative to another object

a)

work

b)

force

c)

motion

d)

power

38.

The formula for work is

a)

Work = force x distance

b)

Work = power x distance

c)

Work = force x time

d)

Work = power x time

39.

The rate at which one form of energy is transformed into another.

a)

energy

b)

work

c)

force

d)

power

40.

The formula for power is

a)

Power = Force x time/work

b)

Power = Force x distance/time

c)

Power = Work x time

d)

Power = Work x distance

41.

Power is measure in

a)

Joules

b)

Watts

c)

Newton-meters

d)

Joules-meters

42.

In which scenario is work = 0 J ?

a)

Pushing a stationary wall

b)

Pulling a trolley car

c)

Pushing a book across the table

d)

Dropping a set of keys from a height, h.

43.
At what position does the rock have the greatest kinetic energy?
a)
A
b)
B
c)
D
d)
E
44.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
45.
Explain what happens to the potential energy of a rock as it falls off the side of a cliff.
a)
The kinetic energy decreases as the potential energy increases.
b)
The kinetic energy decreases as the potential energy decreases.
c)
The potential energy decreases as the kinetic energy increases.
d)
The potential energy decreases as the kinetic energy decreases. 
46.

At which point is potential energy greatest?

a)

W

b)

X

c)

Y

d)

Z

47.

Where would this baseball have the greatest amount of kinetic energy?

a)

W

b)

X

c)

Y

d)

Z

48.

Where would this baseball have the least amount of kinetic energy?

a)

W

b)

X

c)

Y

d)

Z

49.

Which point has the most potential energy?

a)

G

b)

F

c)

B

d)

A

50.

At which point of the roller coaster is potential energy the greatest?

a)

W

b)

X

c)

Y

d)

Z

51.
2. The diagram to the right represents a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest kinetic energy and the least potential energy?
a)
1
b)
2
c)
3
d)
4
52.

The coaster at B is at -

a)

Maximum PE, Minimum KE

b)

Minimum PE, Minimum KE

c)

Minimum PE, Maximum KE

d)

Maximum PE, Maximum KE

53.

A form of potential energy that is stored in chemical bonds between atoms

a)

Chemical Energy

b)

Thermal Energy

c)

Electromagnetic Radiation

d)

Mechanical Energy

54.

(a)   the material through which a wave travels

55.

Potential Energy + Kinetic Energy = (a)  

56.

The transfer of energy into the thermal energy of an object is called?

a)

Energy

b)

Heat

c)

Motion

d)

Force

57.

What three factors affect mechanical energy?

a)

water, wind, and fire

b)

solids, liquids, and gases

c)

position, velocity, and acceleration

d)

motion, position, and shape

58.

Select two: What are the two types of nuclear energy?

a)

nuclear confusion

b)

nuclear fusion

c)

nuclear fission

d)

nuclear fizzing

59.

What happens to the thermal energy of a substance when its particles’ kinetic energy increases?

a)

thermal energy increases

b)

thermal energy decreases

c)

thermal energy stays the same

d)

thermal energy goes away

60.

What is sound energy?

a)

the total kinetic energy of the particles of a substance

b)

energy carried by sound waves due to the vibration of an object

c)

the energy of electric charges

d)

the energy transferred through an area by electromagnetic waves

61.

1. A ball has a 17 J of kinetic energy and its mechanical energy is 25 J. If the ball has a mass of 3.2 kg, what is its height above the ground?

a)

0.26 m

b)

0.52 m

c)

5.2 m

d)

25 m

62.
If W=Fd
Then how much work is done if it takes 20N to move a box 10 meters
a)
0
b)
2
c)
20
d)
200
63.
Which of these is an example of light energy being transformed into chemical energy?
a)
A glow stick lights up when broken.
b)
Water heated by the sun evaporates.
c)
A plant makes sugar in the sunlight.
d)
A battery causes a buzzer to vibrate.
64.
Which type of energy transformation occurs when a flashlight shines?
a)
chemical → thermal → electrical
b)
chemical → electrical → light
c)
thermal → chemical → light
d)
chemical → electrical → chemical
65.
A lamp that plugs into a wall socket draws energy which flows through a thin wire in the bulb causing it to glow. What energy transformations are taking place?
a)
chemical → light → electrical
b)
mechanical → sound → light
c)
thermal → solar → electrical
d)
electrical → thermal → light
66.
Which of the following systems transforms chemical energy to light energy?
a)
Fan
b)
Lamp
c)
Compass
d)
Burning a candle
67.
The Theory of the Conservation of Energy states -
a)
Energy can be created, just not destroyed. It changes its form from one type to another.
b)
Energy can never be created nor destroyed. It can only change its form from one type to another.
c)
The total energy in our Universe changes, as different forms of energies can be transformed from each other under certain circumstances.
d)
Energy transformations do not passively occur in our lives, rather we actively make use of energies and transform energies.
68.

Difference between initial position and final position of an object.

a)

displacement

b)

motion

c)

position

d)

reference point

69.

Starting point you choose to describe the location, or position, of an object

a)

reference point

b)

position

c)

motion

d)

displacement

70.

Speed at a specific instant in time

a)

instantaneous speed

b)

average speed

c)

constant speed

71.

Your speed at any given point, for example what you read on your speedometer is your ____________.

a)

Instantaneous speed

b)

Average speed

c)

Velocity

d)

Constant speed

72.

On a distance vs time graph, the slope indicates the _________.

a)

the time it took for the object to travel

b)

the acceleration

c)

the speed of the object

d)

the total distance traveled

73.

Acceleration is rate of change of _________ over time

a)

Reference Point

b)

Time

c)

Position

d)

Velocity

74.

How can an object accelerate?

a)

Speeding up

b)

Slowing down

c)

Changing direction

d)

All of the above

75.

How do you calculate average speed?

a)

total distance / total time

b)

total time / total distance

c)

total distance x total time

d)

total distance x total time

76.

An object with constant velocity has

a)

a positive acceleration

b)

a negative acceleration

c)

zero acceleration

d)

changing direction

77.

This graph represents an object moving at a _________ speed, __________ from the reference point

a)

increasing , away

b)

constant , away

c)

increasing , towards

d)

constant , towards

78.

In this graph, the object is

a)

slowing down

b)

speeding up

c)

no moving

d)

moving at a constant speed

79.

In this graph, the object is ___________.

a)

slowing down

b)

speeding up

c)

moving at a constant speed

d)

no moving

80.

A school bus leaves school and heads east for 2 miles before making its first stop. It then turns left and heads north 3 miles before making another stop. What is the total distance traveled by the school bus?

a)

3 miles

b)

5 miles

c)

1 mile

d)

3.61 miles

81.

An ostrich can run at a speed of 43 miles per hour. How much distance can an ostrich run if it runs at this speed for 0.25 hours?

a)

173 miles

b)

43 miles

c)

10.75 miles

d)

0.005 miles

82.

A helicopters speed increases from 25 m/s to 60 m/s in 5 seconds. What is the acceleration of this helicopter?

a)

-7 m/ss

b)

7 m/s2

c)

35 m/s2

d)

-35 m/s2

83.

If a soccer player runs after his opponent 70 meters north, then turns around and chases him 20 meters south, what is his displacement?

a)

90 m

b)

50 m

c)

20 m

d)

10 m

84.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
85.

Which statement about acceleration is correct?

a)

It is related to the changing speed of an object.

b)

It is the distance an object travels in one second.

c)

It is the force acting on an object divided by the distance it travels in one second.

d)

It is the force acting on an object when it is near to the Earth.

86.
Liza is swimming laps from one end of a 50 meter pool to the other. Going from one end to the other is considered one lap. If she swims four complete laps, which statement is TRUE?
a)
Her distance and displacement are both zero.
b)
Her distance is zero, but her displacement is 200 meters.
c)
Her distance is 200 meters, but her displacement is zero.
d)
Her distance and displacement are both 200 meters.
87.
The picture of the position vs. time graph shows an object that is...
a)
accelerating/speeding up
b)
moving at a constant speed 
c)
not moving 
d)
accelerating/slowing down. 
88.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
89.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
90.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
91.
What law of motion does this picture represent?
a)
Newtons 1st law
b)
Newtons 4th law 
c)
Newtons 3rd law 
d)
Newtons 2nd law
92.
What is Newtons 2nd law of motion?
a)
Pancakes 
b)
Force= Mass multiplied by acceleration
c)
For every action there is a equal and opposite  re-action.
d)
Law of gravity 
93.
What Newtons law does this picture represent
a)
Newtons 2nd law 
b)
Law of gravity 
c)
Newtons 1st law
d)
Newtons 5th law
94.

The English Scientist who developed three laws of motion was called:

a)

Sir Isaac Newman

b)

Sir Isaac Newton

c)

Albert Einstein

d)

Mr. Fig Newton

95.

If Mrs. Dircks dropped her Pepsi bottle, what is the force that pulls the bottle to the ground?

a)

motion

b)

friction

c)

air resistance

d)

gravity

96.
Which statement best explains Newton's Third Law of Motion?
a)
An object at rest tends to stay at rest.
b)
For every action there is an equal and opposite reaction.
c)
The acceleration of an object is based on the force applied.
d)
An object continues its motion until an unbalanced force is applied.
97.
Which is the best example of Newton's First Law of Motion?
a)
a basketball thrown in the air falls to the ground
b)
a soccer ball remains motionless until it is kicked by a player
c)
a baseball player swings at an approaching ball
d)
an ice skater pushes back from a wall and moves backwards
98.
The force that draws all objects towards Earth.
a)
friction
b)
gravity
c)
mass
d)
acceleration
99.
A rubbing together force that slows things down and stops them.  It works against motion.
a)
acceleration
b)
mass
c)
gravity
d)
friction
100.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
101.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
102.

What example best represents Newton's 2nd Law of Motion?

a)

An apple fell to the floor.

b)

He rode the bicycle downhill.

c)

The car hit a wall and stopped, but the girl still went forward.

d)

The boy rode his bicycle downhill.

103.
A measure of the average kinetic energy of the individual particles in an object is called:
a)
thermal energy
b)
conduction
c)
convection
d)
temperature
104.
You're holding hands with your best friend.  Your friend's hands are REALLY warm and yours are really cold.  After a few minutes, this has changed.  How might you explain what happened?
a)
The cold energy from your hand transferred to your friend's hand through conduction.
b)
The heat energy from your friend's hand transferred to your hand through conduction. 
c)
The cold energy from your hand transferred to your friend's hand through convection.
d)
The heat energy from your friend's hand transferred to your hand through convection.
105.

When a popsicle melts, the particles in the popsicle _____.

a)

gain thermal energy and speed up

b)

there are no particles in popsicles

c)

lose thermal energy and slow down

d)

stay the same

106.
what is specific heat
a)
Bakers mixtape
b)
a basketball team
c)
The amount of thermal energy required to increase the temperature of 1kg of a material by 1° Celsius.
107.
What  is the formula to calculate heat energy required to raise the temperature of any substance?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ½mv
d)
m=QC
108.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
109.
The specific heat of aluminum is 0.21 cal/g°C.  How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?
a)
105 J
b)
10.5 J
c)
1.05 J
d)
50 J
110.
20 g of water. specific heat of water is 4.18 J/g°C.  temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?
a)
418 Joules
b)
209 J
c)
83 J
d)
4.18 J
111.
The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams of copper?
a)
12.82 °C
b)
24.12°C
c)
351 °C
112.

Boiling Water (a)  

Choose from the below words
Conduction
Convection
Radiation
113.

Cold Pack on Person

a)

Heat is transferred from the cold pack to the person.

b)

Heat is transferred from the person to the cold pack

c)

The cold pack is getting warmer. The person is getting colder.

d)

The cold pack is getting colder. The person is getting warmer.

114.

What is a transfer of heat energy by electromagnetic waves? (a)  

Choose from the below words
Radiation
Convection
Conduction
Heat
115.

Match the following

a)

conduction

1.

ironing a shirt

b)

convection

2.

a radiator heating a cold room

c)

radiation

3.

a microwave heating food

Similar Resources on Wayground

8th Grade Science OST Review

116 questions

8th Grade Science OST Review

quiz

Worksheet

•

8th Grade

REVIEW- Science 8 (Astronomy 1)

118 questions

REVIEW- Science 8 (Astronomy 1)

quiz

Worksheet

•

8th Grade

SCI 110 - Earths Processes and Human Activity Final Core Review

114 questions

SCI 110 - Earths Processes and Human Activity Final Core Review

quiz

Worksheet

•

6th - 8th Grade

Life Sciences Review

111 questions

Life Sciences Review

quiz

Worksheet

•

8th Grade

AIR DAN LARUTAN

113 questions

AIR DAN LARUTAN

quiz

Worksheet

•

8th Grade

Extra Mile #3

119 questions

Extra Mile #3

quiz

Worksheet

•

8th Grade

Energy Transformation

111 questions

Energy Transformation

quiz

Worksheet

•

6th - 8th Grade

Life Science Pre-Test 2021

118 questions

Life Science Pre-Test 2021

quiz

Worksheet

•

7th - 8th Grade