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7th Unit 2 Review

Total questions: 139

Worksheet time: 2hrs 0mins

Name
Class
Date
1.
What form of energy?
a)
Mechanical (kinetic) energy
b)
Chemical (kinetic) energy
c)
Sound (potential) energy
d)
Sound (kinetic) energy
2.
What kind of energy?
a)
Thermal (kinetic) energy
b)
Thermal (potential) energy
c)
Nuclear (kinetic) energy
d)
Mechanical (kinetic) energy
3.
What form of energy?
a)
Thermal
b)
Electrical
c)
Mechanical
d)
Radiant
4.
What kind of energy?
a)
Thermal (kinetic) energy
b)
Chemical (kinetic) energy
c)
Chemical (potential) energy
d)
Mechanical (kinetic) energy
5.
Which form of energy is being released?
a)
light (potential)
b)
Light (kinetic)
c)
chemical (kinetic)
d)
Electrical (kinetic)
6.
What form of energy do plants use to make sugar in the photosynthetic process?
a)
heat energy
b)
chemical energy
c)
solar energy
d)
kinetic energy
7.
What form of energy is stored in the bonds between molecules of matter?
a)
chemical energy
b)
heat energy
c)
kinetic energy
d)
mechanical energy
8.
All of the different forms of energy move making them kinetic energy
a)
True
b)
False
9.
Lightning during a thunderstorm is an example of what form of energy?
a)
Radiant (potential) energy
b)
Radiant (kinetic) energy
c)
Electrical (potential) energy
d)
Electrical (kinetic) energy
10.
Which of the followings are examples of thermal energy?
a)
a violin string plucked, talking, ringing telephone
b)
boiling water, steam, heat from a flashlight
c)
candle flame, light bulb light
d)
energy from the sun (fusion, energy from a nuclear power plant (fission)
11.
Energy takes up space
a)
True
b)
False
12.
A baseball held by a pitcher has _____________energy.
a)
Kinetic
b)
Chemical 
c)
Potential
d)
Thermal
13.
At what position does the rock have the greatest kinetic energy?
a)
A
b)
B
c)
D
d)
E
14.
This would be
a)
Nuclear (kinetic) energy
b)
Nuclear (potential) energy
c)
Chemical (kinetic) energy
d)
Chemical (potential) energy
15.
This would be
a)
Nuclear (kinetic) energy
b)
Nuclear (potential) energy
c)
Chemical (kinetic) energy
d)
Chemical (potential) energy
16.
This would be...
a)
Mechanical (kinetic) energy
b)
Kinetic (kinetic) energy
c)
Thermal (kinetic) energy
17.
What form of energy is being used when a person hits a tennis ball with a tennis racket?
a)
thermal energy
b)
sound energy
c)
light energy
d)
mechanical energy
18.
How does light travel?
a)
it bounces off objects
b)
in a zigzag pattern
c)
in a straight line
d)
it swirls upward
19.
Will electrical energy flow in an open circuit?
a)
yes
b)
no
20.
What kind of energy is associated with vibrations?
a)
mechanical energy
b)
electrical energy
c)
light energy
d)
sound energy
21.
What type of energy increases as molecules move faster? 
a)
mechanical energy
b)
electrical energy
c)
thermal energy
d)
sound energy
22.
How does heat always transfer?
a)
from cold to hot
b)
from hot to cold
c)
from liquid to solid
d)
from gas to liquid
23.
What type of heat transfer does this picture represent? (pot touching burner)
a)
radiation
b)
conduction
c)
convection
d)
sunshine
24.
What kind of heat transfer does this picture represent?
a)
chocolate chip cookies
b)
radiation
c)
conduction
d)
convection
25.
What type of heat transfer does this picture represent?
a)
radiation
b)
conduction
c)
convection
d)
sunburns
26.
What type of heat transfer does this picture represent?
a)
radiation
b)
conduction
c)
convection
d)
hot air balloons
27.
Which of the following would sound travel through the fastest?
a)
water
b)
oxygen
c)
wood
d)
koolaid
28.
Would this picture represent a low or high pitch sound wave?
a)
low
b)
high
29.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
30.

Which of the following transforms energy from uranium atoms into electrical energy?

a)

magnetic fields

b)

solar panels

c)

nuclear fission

d)

satellite dish

31.

Which of the following transforms energy from plant and animal matter into electrical energy?

a)

rotating windmills

b)

burning biomass

c)

splitting atoms

d)

mining coal

32.
Which of the following transforms energy from the oceans into electrical energy?
a)
ocean buoys
b)
tidal turbines
c)
tsunamis
d)
deep sea trenches
33.
Which is a nonrenewable source of energy?
a)
nuclear
b)
wind
c)
sunlight
d)
biomass
34.
Which is a renewable source of energy?
a)
coal
b)
uranium
c)
ocean tides
d)
natural gas
35.
Which is a renewable source of energy?
a)
a dam
b)
a nuclear plant
c)
a coal mine
d)
an oil refinery
36.
The picture shows sunlight shining on solar panels. 
Which statement best describes this energy source?
a)
Sunlight is a renewable energy source used to produce hydropower.
b)
Sunlight is a nonrenewable energy source used to produce nuclear power.
c)
Sunlight is a renewable energy source used to produce electricity.
d)
Sunlight is a nonrenewable energy source used to produce natural gas.
37.
The picture shows a geothermal power plant. 
Which statement best describes this energy source?
a)
Geothermal power plants are renewable energy sources used to remove magma.
b)
Geothermal power plants are nonrenewable energy sources used to produce natural gas.
c)
Geothermal power plants are renewable energy sources used to produce electricity.
d)
Geothermal power plants are nonrenewable energy sources used to dig for oil.
38.

There is the same amount of energy today as when the world began.

a)

True

b)

False

39.

An energy source that is gone forever once it is used up is called?

a)

renewable

b)

nonrenewable

c)

natural resource

d)

raw material

40.

A windmill is a renewable energy source

a)

True

b)

False

41.
Coal, oil, and natural gas are all are renewable energy sources.
a)
True
b)
False
42.
The fossil fuels formed hundreds of millions of years ago from the remains of dead ?
a)
Animal and plants
b)
Plants and bones
c)
Fungus and animal
d)
Rock and Plants
43.

Which of the following nonrenewable energy resources is NOT a fossil fuel?

a)

Natural gas

b)

Coal

c)

Oil

d)

Nuclear

44.

Wind, water, geothermal solar and biomass are what types of energy sources?

a)

Renewable

b)

Nonrenewable

45.

During any kind of energy transformation, some energy is lost to the environment in the form of

a)

heat

b)

chemical

c)

greenhouse gases

d)

electrical

46.

Which methods of energy produces the most energy and is the least harmful to our environment?

a)

coal mining & natural gas

b)

biofuels & hydropower

c)

solar & wind energy

d)

nuclear & geothermal

47.
Which energy conversion is taking place when you put gasoline in a car?
a)
thermal -> electrical
b)
mechanical -> electrical
c)
chemical -> mechanical
d)
mechanical -> electromagnetic
48.
what type of energy is stored in a battery?
a)
electrical
b)
chemical
c)
thermal
d)
mechanical
49.
Which energy transformation occurs in a toaster?
a)
chemical to electric
b)
electric to thermal
c)
kinetic to chemical
d)
thermal to potential
50.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
51.
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
52.
What is energy changing from one form to another?
a)
energy conservation
b)
energy transformation
c)
energy creation
d)
mechanical energy
53.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
54.
A hairdryer converts -- 
a)
electrical energy into chemical
b)
electrical energy into thermal
c)
chemical energy into mechanical
d)
thermal energy into mechanical
55.
What machine changes electrical energy into light and sound energy?
a)
battery
b)
lightbulb
c)
alarm clock
d)
apple
56.
"Energy can be transformed from one form into another or transformed from one region or another, but energy cannot be created or destroyed."
Which law is this?
a)
Law of Conservation of Mass
b)
Newton's Second Law
c)
Law of Conservation of Energy
d)
Newton's Third Law
57.
Which of the following converts chemical energy to thermal energy?
a)
Battery
b)
Person riding a bike
c)
Automobile
d)
Camp Fire
58.
A student listens to music with a digital music player, similar to the one shown below. Which best describes the energy transformations that take place in the music player?
a)
Mechanical to chemical to electrical
b)
Chemical to sound to electrical
c)
Chemical to electrical to sound
d)
Electrical to heat to sound
59.
Energy from light waves.
a)
Radiant Energy 
b)
Chemical Energy 
c)
Nuclear Energy 
d)
Radiation 
60.
Conduction can only occur between two objects when –
a)
one object is less dense than the other.
b)
both objects are in physical contact with each other.
c)
one of the objects is made of a metal.
d)
both objects are exactly the same temperature.
61.
In the situation illustrated, how will heat energy move? Heat energy will be transferred from –
a)
the water to the hot plate by convection.
b)
the water to the hot plate by conduction.
c)
the hot plate to the water by convection.
d)
the hot plate to the water by conduction.
62.
Radiation is a method of thermal energy transfer that moves -
a)
through empty space.
b)
when objects touch.
c)
only through solids.
d)
in the motion of fluids.
63.
An example of a situation in which an egg is receiving thermal energy through convection -
a)
The egg is kept warm by its mother in the nest.
b)
An egg cracked on a hot sidewalk starts to cook.
c)
The egg is hard boiled in a pot of water.
d)
A metal pan on the stove fries the egg.
64.
Which of the following describes a way in which heat energy will be transferred by conduction?
a)
Sample 1 to Sample 2
b)
Sample 3 to Sample 2
c)
Sample 3 to Sample 1
d)
Sample 2 to Sample 3
65.
Which of the following sets of tools would be the MOST useful for measuring the transfer rate of thermal energy in four different liquids -
a)
Triple-beam balance, beakers, metric ruler
b)
Hot plate, beakers, thermometers
c)
Microscope, funnel, metric ruler
d)
pH meter, test tubes, forceps
66.
Conduction is heat transfer by -
a)
Touch
b)
Circles
c)
Waves
67.
Convection is heat transfer by-
a)
Touch an object
b)
The heating and cooling of a fluid
c)
Electromagnetic Waves
68.
Warm air rises and the cool air sinks demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
d)
Insolation 
69.
When the 2nd story of a house is warmer than the 1st floor of a house is heat transfer through 
a)
conduction
b)
convection
c)
radiation
d)
thermal equilibrium
70.
The sun warming your skin is an example of heat transfer through 
a)
conduction
b)
convection
c)
radiation
d)
thermal electricity
71.
Heat transfer through electromagnetic waves is called 
a)
conduction
b)
convection
c)
radiaton
d)
thermal
72.
Walking on the warm sand sand with your bare feet demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
73.
A group of friends gather around a fire to stay warm.
a)
conduction
b)
convection
c)
radiation
74.
Hot coffee is stirred with a spoon; the spoon gets hot due to
a)
conduction
b)
convection
c)
radiation
75.
What type of heat transfer takes place in solids?
a)
Conduction
b)
Convection
c)
Radiation
76.

What type of heat transfer takes place in liquids and gasses?

a)

Conduction

b)

Convection

c)

Radiation

d)

Thermal Equilibrium

77.
Heat transfer always goes from-
a)
Cold to Hot
b)
Hot to Cold
c)
Heat doesn't transfer
d)
Freezing to Cold
78.
What happens to particles as they cool down?
a)
They slow down
b)
Nothing
c)
They don't move
d)
They speed up
79.
Conductors are materials that...
a)
Allow heat to pass through
b)
Stop heat from passing through
c)
Allow cold to pass through
d)
Stop cold from passing through
80.
An object that doesn't conduct heat well is known as:
a)
a conductor
b)
an insulator
c)
conduction
d)
insulation
81.
Poor conductors like wood and plastic are called:
a)
conductors
b)
insulators
c)
burners
82.
Transfer of thermal energy through "space"
a)
conduction
b)
convection
c)
radiation
83.
You lay on a hot rock at night so that you can keep warm by ...
a)
Conduction
b)
Convection
c)
Radiation
84.
The most common temperature scale used in the world where water freezes at 0 degrees and boils at 100 degrees is called the __________________ scale.
a)
Celsius
b)
Fahrenheit
c)
Pound
d)
Kelvin
85.
Hot coffee is stirred with a spoon, the spoon get hot due to...
a)
Conduction
b)
Convection 
c)
Radiation
86.
What type of heat transfer is the following?: barbecuing.
a)
Conduction
b)
Convection
c)
Radiation
d)
The three of them
87.
What type of heat transfer is the following?: using a heater in winter.
a)
Conduction
b)
Convection
c)
Radiation
88.
The most common temperature scale used in the United States - where water freezes at 32 degrees and boils at 212 degrees is called the __________________________ scale.
a)
Celsius
b)
Pound
c)
Kelvin
d)
Fahrenheit
89.
The most common temperature scale used in the physical sciences where temperatures are 273 degrees more than temperatures on the Celsius scale is called the _______________ scale.
a)
Fahrenheit
b)
Kelvin
c)
Pound
d)
Celsius
90.
Which example below is an example of radiation?
a)
Standing on a hot metal bridge
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
91.
What type of material makes the best insulators?
a)
Aluminum
b)
Copper
c)
Styrofoam
d)
Metal
92.
Steve wanted to see if the type of fertilizer made sunflowers grow larger. What is the independent variable 
a)
Type of fertilizer
b)
Size of sunflower
c)
type of sun flower
93.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
d)
Compound
94.
Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?
a)
Type of gasoline
b)
which car the gas is put into
c)
how fast the car can drive
d)
how much gas is put into the car
95.
What would the INDEPENDENT variable be in an experiment testing which types of paper airplane goes furthest?
a)
the paper used
b)
the type of paper airplane
c)
the distance of each plane's flight
d)
how hard the plane is thrown
96.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
97.
Ms. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
d)
Where the experiment took place.
98.
Ms. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
d)
Who set up the experiment (Ms. S, etc)
99.
Tiffany was investing how fast it took Hayden to react to different sounds. Identify the independent variable.
a)
How fast Hayden reacted
b)
different sounds
c)
types of music
d)
Hayden
100.
Mr. S normally uses praise as a reward to train his dog. He wants to know the best way to train his dog, so he sets up an experiment to find out if there is a better way to get his dog to respond to commands. What is his dependent variable?
a)
Type of reward
b)
Praise
c)
Type of dog
d)
Amount of time the dog follows commands
101.
The independent variable is the ONE thing you _____.
a)
change
b)
keep the same
c)
experiment with
d)
investigate
102.
 In a controlled experiment, the variable that is changed to test the hypothesis is called the –
a)
Controlled Variable
b)
Responsive Variable
c)
Dependent Variable
d)
Independent Variable
103.
The measurable factor in an experiment is known as the: 
a)
Control
b)
Independent Variable
c)
Constant
d)
Dependent Variable
104.
Alexandra is testing the quality of her Nikon camera against the camera on her iPhone.  The different cameras is the __ variable.
a)
constant (same)
b)
dependent (measured)
c)
independent (changes)
105.
Khaleel is testing how the use of stress balls during testing affects a student's test score.  The students' average test scores who used the stress balls is the __ variable.
a)
dependent (measured)
b)
constant (same)
c)
independent (changes)
106.
Walker is testing which fertilizer will grow the tallest grass.  The height of the grown grass is the __ variable.
a)
constant (same)
b)
independent (changes)
c)
dependent (measured)
107.
 A comprehension test was given to students after they had studied textbook material either in silence or with the television turned on. What is the dependent variable?
a)
silence
b)
television turned on
c)
score on test
d)
textbook material
108.
Dilcia wants to know how drinking milk affects how tall a Monica grows. Which is the independent variable?
a)
Monica's growth
b)
drinking milk
109.
What would the INDEPENDENT variable be in an experiment testing which types of paper airplane goes furthest?
a)
the paper used
b)
the type of paper airplane
c)
the distance of each plane's flight
d)
how hard the plane is thrown
110.

Changes in the _________ variable causes changes in the _________ variable.

a)

independent; dependent

b)

dependent; independent

111.

How much water does a plant need to grow?

Which are the constant variables?

a)

The type of plant

b)

How much water you use

c)

Location of plant

d)

How much the plant grows

e)

How long you grow the plant

112.

Which type of sugar dissolves the fastest?

Which is the independent variable?

a)

The temperature of the water

b)

The amount of water

c)

The type of sugar

d)

The type of cup you use

113.

How much food does a goldfish need to grow?

Which is the dependent variable?

a)

The type of fish

b)

How much food you give the fish

c)

How fast they fast

d)

The amount of water in the tank

114.

How high can an average 6th grader jump?

Which are the constant variables?

a)

The age of the students

b)

The surface they are jumping from

c)

The height they can jump

d)

How well the students did on a math test the day before

115.

How does the amount of baking powder added to a cake mix affect the taste?

Which is the independent variable?

a)

The amount of baking powder

b)

The type of cake

c)

The amount of oil in the cake

d)

The temperature of the oven

116.

Which type of apple has the most water in it?

Which is the dependent variable?

a)

The size of the apple

b)

The age of the apple

c)

The amount of water

d)

The type of apple

117.

Do different types of music make a difference in test scores?

Which are the control variables?

a)

The type of music

b)

The volume of the music

c)

How well the student does on a test

d)

The type of test

118.

Which type of bubble gum makes the biggest bubble?

Which is the independent variable?

a)

The brand of the gum

b)

how long you chew the gum

c)

the amount of air to blow the bubble

d)

the size of the bubble

119.

Does the amount of time a person spends watching TV make a difference in their grades?

Which is the dependent variable?

a)

The type of TV they watch

b)

How much time they spend watching TV

c)

The classes they are in

d)

Their grades

120.

Which type of soap cleans the best?

Which is the independent variable?

a)

How dirty the plate is

b)

How hot the water is

c)

The type of soap

d)

The type of food on the plate

121.

Which best describes the act of using senses or tools to gather information?

a)

creating a hypothesis

b)

making an observation

c)

summarizing the results

d)

recording the measurements

122.

Which best describes the purpose of a control sample?

a)

to compare its results to those of a well-known scientist

b)

to have more qualitative data to analyze at the end of the experiment

c)

to compare its results to those with the experimental sample

123.

In an investigation that uses the scientific method, which step immediately follows making a hypothesis?

a)

test your hypothesis

b)

summarizing the results

c)

making observations

d)

asking a question

124.

When we test our hypothesis, there are two types of variables. What are they?

a)

Independent and controlled variable

b)

dependent and controlled variable

c)

independent and dependent variable

d)

none of the above

125.

Constants are factors in an experiment that stay the same. True or False?

a)

True

b)

False

126.

What should an experimenter do after analyzing data?

a)

carry out the experiment

b)

draw conclusions

c)

observe and infer

d)

identify the problem

127.

Process of answering questions with observations and experiments is called:

a)

analysis

b)

hypothesis

c)

scientific method

d)

conclusions

128.

After scientists draw a conclusion, what do they do at the end of the scientific method?

a)

analyze data

b)

write down observations

c)

do an experiment

d)

share results with other scientists

129.

The one factor that a scientist changes during an experiment. (It affects the results of the experiment).

a)

Controlled Variable

b)

Dependent Variable

c)

Independent Variable

130.

The variable that is measured. It is the result of the experiment.

a)

Controlled Variable

b)

Dependent Variable

c)

Independent Variable

131.

The factors that stay the same throughout the experiment.

a)

Constant

b)

Dependent Variable

c)

Independent Variable

132.

Why is it important to have only one independent variable and to control the other variables when performing science experiments?

a)

So you can tell which factor is causing the change in the experiment and get more accurate results

b)

It does not matter, you can have as many independent variables as you want.

c)

None of these answers are correct

133.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the independent variable?

a)

Dropping the same way

b)

Wing Length

c)

Amount of time it takes the helicopter to hit the floor

d)

Dropping from the same height

134.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the dependent variable?

a)

Dropping the same way

b)

Wing Length

c)

Amount of time it takes the helicopter to hit the floor

d)

Dropping from the same height

135.

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.

What is the independent variable?

a)

Using the same type of plant

b)

Each plant was placed in a 10 inch pot

c)

The growth of the plant

d)

One plant is in the sunlight and the other is under a box

136.

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.

What is the dependent variable?

a)

Using the same type of plant

b)

Each plant was placed in a 10 inch pot

c)

The growth of the plant

d)

One plant is in the sunlight and the other is under a box

137.

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.

What are two CONSTANTS? (Select 2)

a)

Using the same type of plant

b)

Each plant was placed in a 10 inch pot

c)

The growth of the plant

d)

One plant is in the sunlight and the other is under a box

138.
Molly investigated if the age of students caused them to be better drivers. What is the independent variable?
a)
Type of car
b)
Skill of driving
c)
Age of student
139.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
d)
Compound

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