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7th Grade Benchmark #2

Total questions: 100

Worksheet time: 1hrs 29mins

Name
Class
Date
1.

What type of energy is being used?

a)

electromagnetic

b)

mechanical

c)

thermal

d)

sound

2.

What type of energy is being used?

a)

electromagnetic

b)

mechanical

c)

chemical (photosynthesis)

d)

sound

3.
The purpose of the panels is to change solar energy into ____________.
a)
light energy
b)
electrical energy
c)
chemical energy
d)
mechanical energy
4.
According to which law of energy, energy can't be created or destroyed?
a)
First law of motion
b)
The law of tacos
c)
Laws of Energy
d)
law of conservation of energy
5.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
6.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
7.
When plants convert the sun's energy into food, which type of energy is it?
a)
kinetic
b)
chemical
c)
thermal
d)
radiant
8.
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
9.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
10.
Wind turbines and windmills convert what energy to another?
a)
Kinetic to electric
b)
Gravitational potential to electric
c)
Mechanical to potential
d)
Thermal to sound
11.
Energy that is stored in bonds between atoms is:
a)
Mechanical energy
b)
Chemical energy
c)
Kinetic energy
d)
Nuclear energy
12.
Energy that comes from the nucleus of an atom. A form of potential energy.
a)
chemical energy
b)
Nuclear energy
c)
Sound energy
d)
Electrical energy
13.
What machine changes chemical energy into heat, light and sound energy
a)
blender
b)
firecracker
c)
lightbulb
d)
apple
14.

Which of the following is NOT an example of chemical energy?

a)

A glow stick

b)

A battery

c)

A rock about to fall off a cliff

d)

A burning match

15.
Heat transfer in boiling water.
a)
Conduction
b)
Convection
c)
Radiation
16.
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. 
17.

Objects with MORE MASS have______________

a)

lower potential energy

b)

lower number of atoms

c)

higher thermal energy

d)

higher temperature

18.

Temperature always measures the ___________ movement of molecules

a)

median

b)

mode

c)

total

d)

average

19.

As temperature increases, molecules _____________

a)

move slower

b)

move the same

c)

move faster

d)

stop moving

20.

Which type of heat transfer is shown?

a)

convection

b)

conduction

c)

radiation

d)

ironing

21.
TRUE or FALSE?  Frying pans made for cooking are made of metal because metals are good CONDUCTORS of heat energy.
a)
True
b)
False
22.

Transfer of energy by electromagnetic waves is called

a)

conduction

b)

convection

c)

radiation

d)

infrared proton rays (sounds cool, but I made it up so don't pick this one)

23.

A material that doesn’t allow heat to pass through it easily is a/an

a)

conductor

b)

insulator

c)

metal

d)

rock

24.

When heat is passed on by direct contact of particles, this occurs

a)

conduction

b)

condensation

c)

convection

d)

radiation

25.

Temperature scale starting with absolute zero at 0 is the

a)

coldness scale

b)

Farenheit scale

c)

Celcius scale

d)

Kelvin scale

26.

The diagram above represents a thermometer. Which of the following best explains how the thermometer works?

a)

Liquid changes to a gas when heated.

b)

Gas changes to a liquid when heated.

c)

Liquids expand when heated and contract when cooled.

d)

Liquids contract when heated and expand when cooled.

27.

Heat

a)

The total kinetic and potential energy of all the particles in an object.

b)

Energy that is transferred from a warmer object to a cooler object.

c)

A measure of the average kinetic energy of the particles in a substance.

d)

The heating of a substance that causes its particles to move more quickly.

28.

Thermal Energy

a)

The total kinetic and potential energy of all the particles in an object.

b)

Energy that is transferred from a warmer object to a cooler object.

c)

A measure of the average kinetic energy of the particles in a substance.

d)

The heating of a substance that causes its particles to move more quickly.

29.

In this example, explain the movement of thermal energy in the glass.

a)

Heat is moving from the lemonade to the glass

b)

Heat is moving from the lemonade to the ice

c)

Cold is moving from the ice to the lemonade

d)

Cold is moving from the ice to the glass

30.

This Styrofoam cup is a good example of a _________.

a)

Conductor

b)

Insulator

c)

Drinking device

d)

Solid

31.

What energy transformation occurs as howler monkeys loudly call to each other in the forest?

a)

Chemical --> Mechanical --> Sound

b)

Chemical --> Sound --> Thermal

c)

Sound --> Chemical --> Radiant

d)

Mechanical --> Chemical --> Sound

32.

What energy transformation occurs during photosynthesis?

a)

Chemical --> Radiant

b)

Thermal --> Chemical

c)

Radiant --> Chemical

d)

Mechanical --> Thermal

33.

What energy transformation occurs as a mouse produces body heat?

a)

Chemical --> Thermal

b)

Thermal --> Chemical

c)

Electrical --> Thermal

d)

Thermal --> Mechanical

34.
What is the energy transformation?
a)
Kinetic to Mechanical and Electrical
b)
Chemical to Thermal and Electromagnetic (light)
c)
Electromagnetic to Chemical and Electrical
d)
Kinetic to Sound and Chemical
35.
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
36.

the continuous flow of electrical charges through a material

a)

electron

b)

electric force

c)

electric field

d)

electric current

e)

static electricity

37.

the region around a charged object where the object's electric force is exerted on other charged objects

a)

electron

b)

electric force

c)

electric field

d)

electric current

e)

static electricity

38.

the force between charged objects

a)

electron

b)

electric force

c)

electric field

d)

electric current

e)

static electricity

39.

a negatively-charged particle that moves around the outside of the nucleus of an atom

a)

electron

b)

electric force

c)

electric field

d)

electric current

e)

static electricity

40.

either end of a magnetic object, where the magnetic force is strongest

a)

magnet

b)

magnetic force

c)

magnetic pole

d)

magnetic field

41.

Where are the strongest and weakest parts of the magnetic field shown in the diagram?

a)

strongest: A, weakest: B

b)

strongest: A, weakest: D

c)

strongest: C, weakest: A

d)

strongest: C, weakest: B

42.

Which of the following statements describes the similarities between electric and magnetic fields?

a)

The field lines in both magnetic and electric fields are always straight.

b)

Each charged particle and magnet have both a positive and negative side.

c)

Opposite charges and poles are always attracted to each other.

d)

The potential energy increases as like charges or poles get farther apart.

43.

How does the magnetic field protect life on Earth?

a)

The magnetic field directs charged particles toward the poles and then past Earth.

b)

The magnetic field directs charged particles toward the equator and then past Earth.

c)

The magnetic field absorbs the charged particles coming from the sun.

d)

The magnetic field directs charged particles toward the poles then absorbs them.

44.

How does separating two magnets, as shown in the diagram, affect the energy in the system?

a)

Separating the magnets increases potential energy.

b)

Separating the magnets increases kinetic energy.

c)

Separating the magnets decreases potential energy.

d)

Separating the magnets decreases the electric energy.

45.

Which of the following would NOT increase the magnitude of the electric force between the positively and negatively charged objects?

a)

increasing the amount of positive charges

b)

increasing the amount of negative charges

c)

increasing the distance between the charged objects

d)

decreasing the distance between the charged objects

46.
An object through which electrons can easily flow is called a(n) ___________.
a)
Conductor
b)
Insulator
47.
What are the 3 basic components of a circuit?
a)
Energy source, Load, Energy Pathway
b)
Battery, Energy source, Energy Pathway
c)
Battery, Wire, Energy Pathway
d)
ALL of them
48.
Gives a constant supply of electrons. 
a)
Power source
b)
Load
c)
Energy Pathway
49.
A device that uses electricity. 
a)
Load 
b)
Battery Source
c)
Energy pathway
50.
A wire is an example of _____.
a)
Battery source 
b)
Energy pathway
c)
Load
d)
All of them
51.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
52.
Like poles on a magnet
a)
attract
b)
repel
53.
What is the metal center of an electromagnet called?
a)
The current
b)
the wire
c)
the coil
d)
the core
54.
What is this?
a)
magnet
b)
electromagnet
c)
series circuit
d)
parallel circuit
55.
The Earth produces its own magnetic field.  True or false?
a)
False
b)
True
56.
How do you make an electromagnet stronger?
a)
Add a motor and/or lightbulbs
b)
Add more light bulbs and/or wire coils
c)
add more wire coils and/or a switch
d)
add more wire coils and/or batteries
57.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
58.
Surrounding every magnet is a __________  __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
59.
In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.
a)
wire, iron, electric
b)
electric, wire, iron
c)
iron, electric, wire
d)
excited, hair, apple
60.

What are Motors?

a)

machines that convert electrical energy to mechanical energy

b)

machines that convert mechanical energy to electrical energy

c)

transfers voltages from one value to another

d)

machines that transfer energy to matter

61.

What kind of energy transfer occurs in a generator?

a)

mechanical to electrical

b)

electrical to mechanical

c)

thermal to electrical

d)

mechanical to thermal

62.

What type of energy would be EXERTED by a motor?

a)

thermal

b)

electrical

c)

mechanical

d)

potential

63.

Transformers only transfer electricity only if...

a)

the current is alternating

b)

there's at least one coil (primary)

c)

none of these

d)

all of these

64.

What is the function of the generator?

a)

Convert electrical energy to mechanical (kinetic) energy

b)

Convert electrical energy to thermal energy (heat)

c)

Convert mechanical (kinetic) energy to electrical energy

65.

What is the function of the motor?

a)

Convert electrical energy to mechanical (kinetic) energy

b)

Convert electrical energy to thermal energy (heat)

c)

Convert mechanical (kinetic) energy to electrical energy

66.

What is the function of the transformer?

a)

Convert electrical energy to mechanical (kinetic) energy

b)

Convert electrical energy to thermal energy (heat)

c)

Convert mechanical (kinetic) energy to electrical energy

d)

Step up or step down the voltage

67.

What type of transformer is A?

a)

Step up

b)

Step down

68.

At what part of the atom is the arrow pointing?

a)

electron

b)

neutron

c)

proton

d)

nucleus

69.

At what part of the atom is the arrow pointing?

a)

Cloud

b)

energy level

c)

electron

d)

neutron

70.

At what part of the atom is the arrow pointing?

a)

proton

b)

neutron

c)

electron

d)

nucleus

71.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

72.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
73.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
74.

which of the following is a picture of a transformer

a)
b)
c)
d)
75.

The thinnest layer of Earth.

a)

Inner Core

b)

Outer Core

c)

Crust

d)

Mantle

76.

Least dense layer of Earth's geosphere.

a)

crust

b)

Outer core

c)

inner core

d)

mantle

77.

Liquid Layer of Earth

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

78.

A wave that travels through Earth after an Earthquake. Used as indirect evidence to determine the interior of Earth.

a)

Earthquake waves

b)

Seismic Waves

c)

Directional wave

d)

crustal waves

79.

Thickest layer of Earth, have convection currents

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

80.

The bendable layer under the crust and upper mantle is called

a)

Lithosphere

b)

Crust

c)

Asthenosphere

d)

Mesosphere

81.

Liquid layer of Earth made up of iron and nickel

a)

Lithosphere

b)

Asthenosphere

c)

Outer Core

d)

Inner Core

82.

As you move from the surface to the center of Earth, TEMPERATURE will

a)

Increase

b)

Decrease

c)

Stay the same

83.

As you move from the surface to the center of Earth, PRESSURE will

a)

Increase

b)

Decrease

c)

Stay the same

84.

Crust that is thinner, denser, and newer is this type of crust.

a)

Oceanic Crust

b)

Continental Crust

85.

The crust and upper part of the mantle is called this

a)

Lithosphere

b)

Crust

c)

Asthenosphere

d)

Mesosphere

86.

Layer of Earth Responsible for Earth's magnetic field

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

87.

Crust, Mantle, and Core is considered

a)

Chemical Layers

b)

Mechanical Layers

88.

The arrow pointing to the brown layer is

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

89.

The arrow pointing to the orange layer is

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

90.

The arrow pointing to the yellow layer is

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

91.

The arrow pointing to the white layer of the Earth is

a)

Crust

b)

Mantle

c)

Outer core

d)

Inner Core

92.

Which of the following increases as depth increases into the Earth? (choose all that apply)

a)

time

b)

Pressure

c)

temperature

d)

density

93.
Who is the person credited with developing the theory of continental drift?
a)
Harry Hess
b)
Galileo
c)
Alfred Wegener
d)
Newton
94.

What is this a picture of?

a)

plate tectonics

b)

continental drift

c)

pangaea

d)

glacier scaring

95.

What is the Theory of Continental Drift?

a)

There is a gravitational force that is acting on Earth's land masses, pulling them apart at a rate of 1-2 cm per year.

b)

The continents are located exactly where they will remain for the next 250 million years.

c)

The Earth was once a molten mass that has since cooled and contracted, separating the continents by vast oceans.

d)

The continents were once together in one large land mass but they have since drifted apart.

96.

What type of evidence supported Wegener's Theory of Continental Drift?

a)

Evidence of Climate C

hange

b)

Fossils

c)

Mountain Ranges and landforms

d)

All of the Above

97.

One of the pieces of fossil evidence Wegener found was from a fern-like plant called what?

a)

Gabagool

b)

Glossopteris

c)

Gladiolus

d)

Gargantuan

98.

What is the force that moves the continents? 

a)

Convection Currents in the Mantle

b)

Radiation in the Mantle

c)

Convection Currents in the Outer Core

d)

Conduction in the Mantle

99.

There were glacial scars found on rocks in the deserts of Africa.  What are these evidence for?

a)

Africa was once in an area of the Earth that had a very cold climate

b)

Africa has always been near the equator

c)

Sea floor spreading

d)

The continents have not moved

100.

Why was Alfred Wegener's continental drift hypothesis rejected in the early 1900's?

a)

He was not a scientist.

b)

He did not have enough evidence.

c)

He could not explain what caused the continents to move.

d)

People were dumb back then.

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