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Worksheets

Sci 8 Semester One Exam Review January 2021

Total questions: 150

Worksheet time: 3hrs 6mins

Name
Class
Date
1.
What does the prefix milli- mean?
a)
1/100
b)
100
c)
1,000
d)
1/1,000
2.
how many meters are in 1 kilometer?
a)
10 m
b)
100 m
c)
1,000 m
d)
10,000 m
3.
A hippo's mass would most likely be described using with units?
a)
kilometers
b)
milligrams
c)
kilograms
d)
triple beam balance
4.
20 cm = ______ m
a)
20 m 
b)
0.2 m
c)
0.002 m
d)
2,000 
5.

6 g = ________ kg

a)

60 kg

b)

0.06 kg

c)

6,000 kg

d)

0.006 kg

6.

The SI unit for measuring length is the __________.

a)

meter

b)

kilogram

c)

liter

d)

Newton

e)

second

7.

The SI unit for mass is the ___________.

a)

meter

b)

kilogram

c)

liter

d)

second

e)

Newton

8.

The SI unit for volume is the __________.

a)

meter

b)

kilogram

c)

liter

d)

second

e)

Newton

9.

To change kilometers to meters, move the decimal place...

a)

3 to the right.

b)

3 to the left.

c)

2 to the right.

d)

1 to the left.

10.

To change milligrams to grams, move the decimal place...

a)

3 to the right.

b)

3 to the left.

c)

2 to the right.

d)

1 to the left.

11.

To change cm to m, move the decimal place...

a)

3 to the right.

b)

3 to the left.

c)

2 to the left.

d)

1 to the right.

12.

Convert 323 m to km.

a)

0.323 km

b)

3.23 km

c)

323,000 km

d)

3,230 km

13.

Convert 0.75 L to mL.

a)

750 mL

b)

75 mL

c)

75,000 mL

d)

0.0075 mL

14.

How do you find the net force of this image.

a)

Add up all the arrows

b)

Add a green arrow and the orange arrow.

c)

Subtract all the arrows.

d)

Add the green arrows and subtract the orange arrow.

15.

What is the net force and to what direction.

a)

210 N to the right

b)

280 N to the right

c)

110 N to the left

d)

180 N to the left

16.

What is the Overall Net Force and which side has a greater Net Force?

a)

12, Right

b)

0, Both are balanced

c)

12, Both are balanced

d)

0, Left

17.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

18.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
19.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

20.

A ____________ is a push or a pull on an object.

a)

friction

b)

force

c)

magnet

d)

gravity

21.

Forces that have a net force of zero Newtons

a)

Balanced force

b)

Unbalanced force

22.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
23.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
24.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
25.

If both forces are going in the same direction you should______ those forces

a)

Add

b)

Subtract

c)

Divide

d)

Multiply

26.

When forces are going in the opposite direction of each other you should do what do find the net force

a)

Subtract

b)

Add

c)

Divide

d)

Multiply

27.
What is the speed of a car that travels 400 m in 20 minutes?
a)
20 miles/hr
b)
20 m/min
c)
800 m/min
d)
200 miles/hr
28.
What is the equation to calculate speed?
a)
speed = distance/time
b)
speed = time/distance
c)
speed = time x distance 
d)
speed = speed/time 
29.
A car travels 30 miles/hr for 3 hours, calculate the distance it will travel
a)
90 miles
b)
10 miles
c)
600 miles
d)
90 km
30.
Which of the following is a unit of speed?
a)
km/hr
b)
hr
c)
km
d)
s
31.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
32.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
33.
Velocity is both ____ and _____. 
a)
speed , direction 
b)
direction, mass
c)
volume, density 
d)
direction, magnitude 
34.
Find the velocity of a plane that traveled 3000 miles west in 5 hours.
a)
65 mph west
b)
6 mph west
c)
600 mph west
d)
6000 mph west 
35.
An object is _____ if its position changes relative to another object.
a)
in motion
b)
at reset
c)
a frame of refence
d)
magical
36.
A distance vs. time graph shows an object's
a)
frame of reference
b)
speed
c)
acceleration
d)
favorite food
37.
88 m/s north
a)
Speed
b)
Velocity
c)
Acceleration
38.
increase speed
a)
Speed
b)
Velocity
c)
Acceleration
39.
88 m/s
a)
Speed
b)
Velocity
c)
Acceleration
40.
A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.
a)
30 m/s
b)
24 m/s2
c)
9 m/s2
d)
81 km/hr
41.
A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
42.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
43.
A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.
a)
2.2m/s2
b)
7.0m/s2
c)
5.7m/s2
d)
70m/s2
44.
Acceleration is defined as the CHANGE in 
a)
time it takes for one place to move to another place. 
b)
velocity of an object.
c)
distance divided by the time interval 
d)
velocity divided by the time interval 
45.
Why does a car accelerate as it round a corner at a constant speed?
a)
Its direction changes
b)
It doesn't
c)
It slows down
d)
Its speeds up  
46.
Which graph represents zero acceleration (constant velocity)?
a)
A
b)
B
c)
C
d)
D
47.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
48.
What happened during C to D point?
a)
not moving
b)
increasing speed at a constant rate
c)
moving at a constant speed
d)
moving at 0 m/s2 acceleration
49.

A car turns right without slowing down. Is this an example of acceleration?

a)

No, acceleration is the increase or decrease in speed.

b)

Yes, because the car changed directions.

c)

Yes, because the car increased it's speed.

d)

No, because the car did not change directions.

50.
How can acceleration be zero?
a)
a car runs out of gas and slowly rolls to a stop
b)
a car decreases speed at a constant rate until it comes to rest
c)
car has constant speed and is traveling on a straight path
d)
the car travels round trip and is back at the starting point
51.
What car has the fastest acceleration?
a)
Car goes from 0-60 Mph in 3 seconds
b)
Car goes from 0-60 Mph in 4 seconds
c)
Car goes from 0-60 Mph in 5 seconds
d)
Car goes from 0-60 Mph in 6 seconds
52.

What is the form of energy associated with visible light?

a)

light energy

b)

thermal energy

c)

chemical energy

d)

kinetic energy

53.

What is the form of energy that is created using heat? This form of energy makes particles of matter move faster.

a)

light energy

b)

thermal energy

c)

chemical energy

d)

kinetic energy

54.
What is energy of motion?
a)
light energy
b)
thermal energy
c)
chemical energy
d)
kinetic energy
55.

What is the energy of moving objects, or the energy of moving parts of a machine?

a)

electrical energy

b)

solar energy

c)

mechanical energy

d)

potential energy

56.

What is the energy something has because of its position? (stored energy)

a)

electrical energy

b)

solar energy

c)

mechanical energy

d)

potential energy

57.
What is the ability to do work or cause change?
a)
reflect
b)
energy
c)
refract
d)
absorb
58.

What type of energy is in this slingshot?

a)

Kinetic

b)

Elastic Potential

c)

Gravitational Potential

d)

Chemical

59.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
60.

What type of energy does this provide?

a)

thermal

b)

light

c)

sound

d)

mechanical

61.

The energy of electrons or electric charges

a)

Chemical

b)

Electric

c)

Mechanical

d)

Kinetic

62.

Energy that comes from changes in the nucleus of an atom

a)

thermal

b)

mechanical

c)

electric

d)

nuclear

63.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
64.
Energy transformations occur when...
a)
energy is created through conduction
b)
energy changes from one form to another
c)
two forces slide together that are touching
d)
a chemical reaction takes place
65.

The roller coaster cart has the most gravitational potential energy at position-

a)

W

b)

X

c)

Y

d)

Z

66.

What is energy?

a)

The ability to do work

b)

A force

c)

Electricity

d)

The ability to transform work

67.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
68.

If a Lion ate a gazelle what kind of energy is being transferred?

a)

Mechanical

b)

Chemical

c)

Electrical

d)

Thermal

69.
What is the best example of a machine that converts electrical energy into kinetic energy and sound energy?
a)
an electric toothbrush
b)
a toaster
c)
a flashlight
d)
an iron
70.
What best describes the energy conversion that occurs when you turn on a hair dryer?
a)
electric to kinetic to thermal and sound
b)
chemical to thermal to light and sound
c)
nuclear to electrical to thermal and sound
d)
kinetic to light to thermal and sound
71.
Turning on a lamp is an example of energy transformation from electrical to 3 forms of energy. Which of these is NOT created by the lamp?
a)
radiant
b)
light
c)
heat
d)
chemical
72.
What two forms of energy are given off by a burning candle?
a)
heat and light
b)
mechanical and electrical
c)
nuclear and light
d)
potential and heat
73.

The highest part of a transverse wave is

a)

the crest

b)

the trough

c)

the wave point

d)

the hotel transylvania

74.

The lowest part of a transverse wave are the

a)

crests

b)

troughs

c)

wave points

d)

low nodules

75.

The distance between two corresponding parts of a wave is its

a)

amplitude

b)

frequency

c)

wavelength

d)

velocity

76.

The height of the wave from its resting point is called its

a)

wavelength

b)

amplitude

c)

velocity

d)

frequency

77.

A wave that needs a medium to travel is called a(n)

a)

electromagnetic wave

b)

mechanical wave

c)

ocean wave

d)

any way can do this

78.

A wave that can travel with or without a medium is called a(n)

a)

electromagnetic wave

b)

mechanical wave

c)

surface wave

d)

all waves can travel in any way

79.

Longitudinal waves have:

a)

crests and troughs

b)

crests and compressions

c)

compressions and rarefactions

d)

troughs and rarefactions

80.

Transverse waves have:

a)

crests and troughs

b)

troughs and rarefactions

c)

compressions and contractions

d)

rarefactions and crests

81.

How often a wave occurs is the wave's

a)

frequency

b)

amplitude

c)

wavelength

d)

velocity

82.

Transverse waves move mediums

a)

at a right angle

b)

in a circle

c)

and matter too

d)

at an acute angle

83.

Longitudinal waves move:

a)

at a right angle compared to the direction the wave is traveling

b)

in a circle compared to the direction the wave is traveling

c)

matter

d)

in the same direction as the wave is traveling

84.

What is the amplitude of this wave?

a)

3

b)

-3

c)

6

d)

4

85.

What is the wavelength of this wave?

a)

3

b)

10

c)

4

d)

8

86.

What happens to the frequency of a wave when the amplitude is tripled?

a)

the frequency is tripled

b)

the frequency is a third of what it was

c)

amplitude does not affect frequency

87.

Which of these provides the best explanation for why the pencil appears broken?

a)

The pencil absorbs the light rays that hit it.

b)

Water reflects light rays away from the pencil.

c)

Light rays are bent by the water in the glass.

d)

The surface of the water reflects the light rays.

88.

Light travels in straight lines until reflected by another object. Which illustration best shows the light being reflected?

a)
b)
c)
d)
89.

Which of the following is the best example of an object absorbing light?

a)

A black sweater in the sun.

b)

A clean window in the sun.

c)

A curved mirror in the sun.

d)

A long shadow in the sun.

90.

Light rays from any light source travel outward in all directions along a straight path until they hit something. which of the following best represents what occurs when light rays hit a glass of water?

a)

The light rays will pass straight through from air to water.

b)

The water absorbs the light, and it will no longer be seen.

c)

The light rays will bend at the boundary of air and water.

d)

The surface of the water will reflect the light off the water.

91.

Which of the following is demonstrated when light bounces off of mirrors or shiny surfaces?

a)

Scattering

b)

Refraction

c)

Absorption

d)

Reflection

92.

Which of the following types of electromagnetic radiation has the shortest wavelengths?

a)

Infrared

b)

Ultraviolet

c)

Visible light

d)

Radio waves

93.

Our eyes perceive colors because of differences in which of the following properties of light?

a)

Intensity

b)

Wavelength

c)

Angle

d)

Source

94.

Adrian is observing a piece of white paper. His eye perceives the paper to be white because his eye is receiving what kind of light?

a)

Light in all the colors of the visible spectrum.

b)

Light mostly at the ultraviolet end of the spectrum.

c)

Light mostly at the infrared end of the spectrum.

d)

Light the paper produces when heated by the Sun.

95.

A combination of all the wavelengths with in the visible light portion of the electromagnetic spectrum will result in which of the following colors?

a)

White

b)

Red

c)

Violet

d)

Blue

96.
Why does an apple appear red?
a)
All colors are absorbed & none are reflected
b)
All colors are absorbed except for blue, which is reflected
c)
All colors are reflected and none are absorbed
d)
All colors are absorbed except for red, which is reflected
97.
How does light travel
a)
It curves around corners
b)
Really slow
c)
In a straight line
d)
In circles
98.
Which color reflects the least light?
a)
Black
b)
White 
c)
Blue
d)
Red
99.
Objects that reflect ALL colors will appear _____?
a)
Black
b)
White
c)
Gray
d)
Multi-colored
100.

What type of wave are sound wave?

a)

longitudinal

b)

transverse

c)

electromagnetic

d)

sea wave

101.

What is an echo

a)

deflected sound

b)

refracted sound

c)

reflected sound

d)

diffracted sound

102.

In which medium speed of sound are fastest?

a)

vacuum

b)

solid

c)

liquid

d)

gas

103.
A sound that bounces off a surface is called an ________.
a)
loud sound
b)
echo
c)
repeat
d)
quiet sound
104.
Matter that carries sound waves is called a _________
a)
low
b)
high
c)
medium
d)
surface
105.
A back and forth movement of matter
a)
volume
b)
vibration
c)
pitch
d)
frequency
106.
Sound is caused by? 
a)
force
b)
vibrations
c)
instruments
107.
Sound is a form of? 
a)
energy
b)
pitch
c)
volume
108.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
109.
Sound does not travel in space because
a)
Space is too far away.
b)
There is no matter in space.
c)
Space is the final frontier
d)
Space has planets.
110.
A barefoot student steps on a hot concrete surface. Most of the heat transferred to the student’s skin by this contact is by the process of—
a)
convection
b)
conduction
c)
vaporization
d)
radiation
111.
The diagram to the right shows a solid iron bar that is being heated in a flame. The primary method of heat transfer in the solid iron bar is—
a)
convection
b)
conduction
c)
absorption
d)
radiation
112.
Heat transfer in boiling water.
a)
Conduction
b)
Convection
c)
Radiation
113.
On a cold rainy day a baby is touching a cold window.  It feels so cold. Which way is the heat moving moving? 
a)
Cold is moving from the window to the hand.
b)
Heat is moving from the hand to the window.
c)
Heat doesn't move.
d)
It moves in currents
114.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high. 
115.
The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
116.
Heat transfer occurs
a)
in many directions
b)
both from warm objects to colder ones and from cold objects to warmer ones.
c)
only from warm objects to colder ones.
d)
only from cold objects to warmer ones.
117.
A cup of tea with a temperature of 80 degrees Celsius is placed on a table in a 20 degree Celsius room.  What happens to the thermal energy and the molecular motion of the tea when it is left on the table?
a)
The thermal energy increases and the molecules move faster.
b)
The thermal energy decreases and molecules move more slowly.
c)
The thermal energy increases and the molecules move more slowly.
118.
A student touches a metal sink with her finger and notices that her finger feels cold.  Which of the following statements explains this observations?
a)
Heat energy flows from the student's finger to the metal.
b)
Heat energy flows from the metal sink to the student's finger.
c)
The student's finger was originally at the same temperature as the sink.
119.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
120.
Which state of matter has molecules that slide past each other but stay close together? They do not form a regular pattern.
a)
solid
b)
liquid
c)
gas
121.
What happens when a liquid freezes?
a)
The particle lose kinetic energy and turn into a gas
b)
The particles lose kinetic energy and turn into a solid
c)
The particles gain kinetic energy and turn into a solid
d)
The liquid turns cold
122.
The speed of the molecules determines the _____.
a)
volume
b)
density
c)
pressure
d)
temperature
123.
A solid is
a)
a substance that does not have a definite shape or volume
b)
a substance with a definite volume, but no definite shape
c)
a substance with a definite shape and volume
d)
a substance whose particles glide past one another
124.

The attraction between particles gives solids a definite

a)

shape and volume

b)

shape and color

c)

shape and position

d)

flow and radius

125.

_______________ is an increase in the size of a substance when the temperature is increased.

a)

kinetic energy

b)

potential energy

c)

thermal point

d)

thermal expansion

126.

According to the kinetic theory of matter, all matter is composed of

a)

waves

b)

particles

c)

solid material

d)

plasma

127.

Which of the following is a state of matter?

a)

particle

b)

thermal

c)

plasma

d)

diffuse

128.

When the temperature of a substance is lowered, its particles

a)

vibrate more quickly

b)

stop vibrating completely

c)

escape the attractive forces of the other particles

d)

vibrate more slowly

129.

What is the most common state of matter in the universe?

a)

solid

b)

liquid

c)

gas

d)

plasma

130.

An example of an amorphous solid is

a)

glass

b)

dry ice

c)

liquid crystals

d)

water

131.
In order to convert to Kelvin, you add ______ to the Celsius measurement.
a)
372
b)
273
c)
237
d)
732
132.
What is 50 °C in Kelvin?
a)
223
b)
323
c)
100
d)
50
133.

Convert 30°C into Kelvin.

a)

252K

b)

316°C

c)

303K

d)

-163°C

134.

Convert 45°F into °C.

a)

7.2°C

b)

32°C

c)

32°F

d)

212°F

135.

Convert 89°F into °C.

a)

7.2°C

b)

32°C

c)

32°F

d)

212°F

136.

Convert 100°C into °F.

a)

7.2°C

b)

32°C

c)

32°F

d)

212°F

137.

Convert 24°C into °F.

a)

7.2°C

b)

32°C

c)

75.2°F

d)

°68

138.

Which of the follow represents a normal body temperature of 98.6 °F in Celsius?

a)

37°C

b)

370°C

c)

72.5°C

d)

72.6°C

139.

Convert 150 °F to °C.

a)

65.5 C

b)

65.5 F

c)

338.5 C

d)

338.5 F

140.

Convert -45.9 °C to Kelvin.

a)

227.1 K

b)

400 K

c)

0 K

373 K

141.

Convert 186.5 Kelvin to °C.

a)

-86.4 °C

b)

-50 °C

c)

-68.4 °C

d)

180 K

142.

Absolute Zero is which value:

a)

0 K

b)

0 °F

c)

0 °C

143.

Who is Sleeping Beauty's Villain?

a)

The Evil Queen

b)

Jafar

c)

Lady Tramaine

d)

Maleficent

144.

Who is the 101 Dalmatians villain?

a)

The Evil Queen

b)

Cruella de Vil

c)

Jafar

d)

Medusa

145.

Who is Snow White's Villain?

a)

The Evil Queen

b)

Scar

c)

Queen of Hearts

d)

Ursula

146.

Who is Ariel's villain?

a)

Jafar

b)

Medusa

c)

Jesse

d)

Ursula

147.

Who is the villain in Aladdin?

a)

Gaston

b)

Ursula

c)

Jafar

d)

Maleficent

148.

Who is the villain in Alice in Wonderland?

a)

Jafar

b)

Mad Hatter

c)

Queen of Hearts

d)

White Rabbit

149.

Who is the villain in Beauty and the Beast

a)

Gaston

b)

Scar

c)

Beast

d)

Cogsworth

150.

Who is the villain in The Lion King?

a)

Mufasa

b)

Simba

c)

Scar

d)

Nala

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