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NWEA Test Prep 2

Total questions: 84

Worksheet time: 1hrs 6mins

Name
Class
Date
1.
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.
2.
Which kind of energy change occurs when a candle is burning?
a)
Chemical to light.
b)
Light to electrical.
c)
Solar to heat.
d)
Chemical to electrical.
3.
Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?
a)
chemical → light → electrical
b)
electrical → light → chemical
c)
light → electrical → chemical
d)
chemical → electrical → light
4.
Some students observing a classroom device being used, noticed the below energy transformations. 
Electrical → Mechanical → Sound
Which device were the students most likely observing?
a)
A triple beam balance measuring an object’s mass.
b)
A pencil sharpener plugged into a wall outlet.
c)
A projector displaying a diagram on the screen.
d)
A working flashlight used to light up a dark corner.
5.
The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —
a)
Solar
b)
Light
c)
Thermal
d)
Mechanical
6.

What type of energy is food energy stored in your muscles?

a)

mechanical

b)

nuclear

c)

thermal

d)

chemical

7.

Muscles operate to push the pedals on a bicycle causing the wheels to turn. What type of energy being represented?

a)

mechanical

b)

physical

c)

thermal

d)

chemical

8.

What energy transformation occurs in the chameleon as it quickly launches its tongue to catch an insect?

a)

Radiant --> Chemical

b)

Thermal --> Chemical

c)

Chemical --> Mechanical

d)

Mechanical --> Chemical

9.
Which of the following devices transforms electrical energy into mechanical energy?
a)
An e-reader
b)
a fan
c)
a manual pencil sharpener
d)
ipod
10.
A television works by transforming electrical energy into what other kinds of energy?
a)
Light, thermal, and sound
b)
Thermal, chemical, and solar
c)
Sound, mechanical, and electrical
d)
Light, chemical, and mechanical
11.
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
12.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
13.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
14.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
15.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
16.
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.
17.

Which energy transformation occurs in an electric iron?

a)

heat to light

b)

light to heat

c)

heat to electricity

d)

electricity to heat

18.

Water currents that flow from the equator to the poles move heat from warmer climates to colder ones are an example of which transfer of heat?

a)

Conduction

b)

Convection

c)

Radiation

19.

When a volcano erupts, hot molten rock can come to Earth’s surface. This lava burns or melts most things it touches. The lava is so hot it can set a tree on fire even if the tree is several feet away from it. This phenomenon is caused by the process of...

a)

Conduction

b)

Convection

c)

Radiation

20.

On a sunny beach, the sand becomes hot enough to be uncomfortable to your bare feet. However, if a wave washes over the hot sand, the cooler water removes heat from the sand by the process of

a)

Conduction

b)

Convection

c)

Radiation

21.

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

a)

mechanical energy

b)

kinetic energy

c)

potential energy

d)

thermal energy

22.

The energy that is transferred from a warmer object to a cooler object is called...

a)

thermal energy

b)

heat

c)

force

d)

temperature

23.

The thermal energy of an object changes when heat is transferred

a)

True

b)

False

24.

____________ is a measure of the average kinetic energy

a)

heat

b)

thermal energy

c)

temperature

25.

________ is the transfer of energy from one particle of matter to another within an object or between two objects in direct contact

a)

Conduction

b)

Convection

c)

Radiation

26.

__________ is a type of heat transfer that occurs through the movement of fluids, which can be solid liquid or gas.

a)

Conduction

b)

Convection

c)

Radiation

27.

__________ is the transfer of energy by electromagnetic waves

a)

Conduction

b)

Convection

c)

Radiation

28.

The law of conservation of energy applies to everything - even when energy transforms

a)

True

b)

False

29.

An electric stove transform ______ energy into thermal energy

a)

chemical

b)

electrical

c)

thermal

d)

nuclear

30.

A gas stove converts ______ energy into thermal energy

a)

chemical

b)

electrical

c)

nuclear

d)

mechanical

31.

Even though thermal energy moves (transfers) from one place to another, it is always conserved within a system

a)

True

b)

False

32.

When cooking a pizza in an oven, the oven loses energy and so does the pizza

a)

True

b)

False

33.

________ are materials that conduct heat well, like metals and tile flooring.

a)

conductors

b)

insulators

34.

_________ are materials that do not conduct heat well, like wool blankets or wood

a)

conductors

b)

insulators

35.

Energy is not created or destroyed, it is transferred to objects or transformed into other forms of energy

a)

True

b)

False

36.

What type of energy is created using this?

a)

chemical

b)

electrical

c)

mechanical

37.

What energy did the ball have after he kicked it?

a)

potential

b)

kinetic

38.

Batteries have _________ energy.

a)

mechanical

b)

thermal

c)

chemical

39.

The sun gives off __________ energy.

a)

mechanical

b)

electrical

c)

radiant

40.

A stretched rubber band has what type of energy?

a)

potential

b)

kinetic

41.

___________ happens in a liquid when energy moves from warm to cooler temperatures

a)

convection

b)

conduction

42.

The law of conservation of energy says that energy cannot be created or destroyed.

a)

False

b)

True

43.

The lights will turn on when there is a _________ circuit.

a)

open

b)

closed

44.

The lights will turn off when there is an _______ circuit.

a)

open

b)

closed

45.

________ energy is also called heat energy.

a)

electrical

b)

mechanical

c)

thermal

46.

Your hand will get warm because heat energy is transferred by ___________.

a)

convection

b)

conduction

47.

What is something that uses electrical energy?

4 lines
48.

What is something that uses chemical energy?

4 lines
49.

What is Energy?

a)

The ability to do anything

b)

The ability to cause change or do work

c)

The investigation of nature

d)

A fact of life

50.

What is an example of kinetic energy?

a)

An apple in a tree

b)

A bouncy ball on the table

c)

A car driving on the highway

d)

A stretched out rubber band

51.

What is an example of potential energy?

a)

A bowling ball rolling down a lane

b)

A car parked in a lot

c)

An apple falling from a tree

d)

Sunlight heating up the atmosphere

52.

Energy cannot be created or destroyed.

a)

True

b)

False

53.

What is the definition of friction?

a)

A force that resists the sliding of two objects that are touching

b)

A force that increases sliding between two objects

c)

The change from potential to kinetic energy

d)

A transformation from radiant to mechanical energy

54.

Which of the following describes an energy transformation?

a)

When energy is lost due to friction

b)

An electric motor moving a car

c)

A solar panel powering a home

d)

A television projecting a show

55.

What transformation occurs in a toaster?

a)

Electrical to light

b)

Electrical to thermal

c)

Thermal to mechanical

d)

Solar to electrical

56.

What type of energy transformation occurs when a piece of wood burns?

a)

Electrical energy is released as radiant energy

b)

Stored chemical energy is released as thermal energy

c)

Mechanical energy is stored as chemical energy

d)

No transformation occurs

57.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
58.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
59.

Which of the following is an example of a change of kinetic energy into gravitational potential energy?

a)
a person parachuting out of a plane
b)
a car racing around an oval track
c)
a person skiing down a hill
d)
a person walking up a hill
60.
What would have the greatest kinetic energy?
a)
A car driving down a hill.
b)
A person running down a hill. 
c)
A ball rolling down a hill. 
61.
Food has _________ energy. 
a)
Potential 
b)
Kinetic 
c)
None of the above 
d)
All of the above 
62.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
63.

Which object shows an energy transformation from electrical to mechanical?

a)
b)
c)
d)
64.

What sort of energy transformation is this?

a)

Chemical to Thermal

b)

Thermal to chemical

c)

Kinetic to potential

d)

Open to closed

65.

________________ is done whenever a force moves an object a distance.

a)

Load

b)

Friction

c)

Force

d)

Work

66.

How can simple machines make work easier?

a)

by decreasing the force needed to complete the task

b)

by increasing the friction between the machine and the object

c)

by adding more work on the object than originally applied

d)

by removing the force of gravity on the object

67.

Simple machines can make work easier by reducing the input force needed to move an object. However, there is a trade off for decreased input. What is the trade off?

a)

The distance the object is moved is increased.

b)

The distance the object is moved is decreased.

c)

The amount of work is increased.

d)

The amount of work is decreased.

68.

A doorknob is an example of a _______.

a)

wheel and axle

b)

inclined plane

c)

pulley

d)

wedge

69.
Which type simple machine would the base of a light bulb be?
a)
screw
b)
wedge
c)
wheel and axle
d)
pulley
70.

The fixed point around which a lever rotates is know as the

a)

wheel.

b)

fulcrum.

c)

input force.

d)

output force.

71.

A simple machine that splits an object apart is a _______.

a)

inclined plane

b)

fulcrum

c)

wedge

d)

lever

72.

A ramp is an example of a(n) _______.

a)

inclined plane

b)

fulcrum

c)

force

d)

lever

73.

Which simple machine would be the MOST efficient for lifting an object 30 meters off the ground?

a)

pulley

b)

screw

c)

wedge

d)

lever

74.

The bow or front of a boat splits the water as the boat moves. What kind of simple machine would the bow of the boat be?

a)

wedge

b)

screw

c)

ramp

d)

lever

75.

Using the back of a hammer makes it much easier to remove a nail from a wooden board. What kind of simple machine would the hammer be classified as if you are using it for this purpose?

a)

Wedge

b)

Lever

c)

Pullye

d)

Inclined Plane

76.

Which of the following is NOT an example of the simple machine know as a screw?

a)

the lid of a jar

b)

a bolt

c)

a drill bit

d)

a crowbar

77.

A tool with only a few parts that helps you do work is called a

a)

simple machine

b)

complex machine

c)

axle

d)

fulcrum

78.

Two inclined planes together that helps push things apart.

a)

pulley

b)

wedge

c)

gear

d)

lever

79.

Which of the following is NOT a complex machine?

a)

bicycle

b)

ramp

c)

can opener

d)

wheel barrow

80.

A seesaw is what simple machine?

a)

lever

b)

inclined plane

c)

pulley

d)

gear

81.

A complex machine is:

a)

the same as a single simple machine

b)

two simple machine only

c)

two or more simple machines

d)

four simple machine

82.

A wheelbarrow is an example of a complex machine. Which simple machine is NOT found in this object?

a)

lever

b)

wedge

c)

wheel and axle

83.
What is the unit of measurement for work?
a)
Newtons
b)
Joules 
c)
Watts
d)
Meters
84.
Mechanical advantage is a measure of how much a machine multiplies the input
a)
efficiency.
b)
force.
c)
power.
d)
work.

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