WorksheetsENERGY
Total questions: 35
Worksheet time: 18mins
Look closely at the illustration below of the three states of water.
Change of State
Which of the following labels should be added to all of the black arrows in the above illustration?
Heat Removed
Heat Added
Temperature Decreases
Temperature Increases
A change of state may happen when energy as heat is transferred to or from a substance. Which change of state could occur as energy is added to a substance?
gas --> solid
liquid --> solid
gas --> liquid
liquid --> gas
As Marsha reached to plug her cell phone power cord into an outlet, she heard the snap of a blue spark between the outlet and her plug. What transformation of energy did Marsha observe?
chemical ---> light + sound
electrical ---> light + sound
kinetic + sound --->electrical
light + thermal -->electrical
Energy can be transformed from one form to another in a system. What happens in all transformations of energy?
The total energy of a system increases.
Electrical energy is changed into light energy.
Chemical energy must be supplied for the transformation
One form of energy is changed into a different form of energy
As part of his study of the transformation of energy, Roberto set up the system shown in the illustration below. What forms of energy did Roberto demonstrate with his system?
electrical, light, sound, thermal, and chemical
electrical, light, sound, and chemical
electrical, light, thermal, and chemical
electrical, sound, thermal, and chemical
Study the illustration, What is demonstrated in the illustration?
the transformation of energy
the conservation of energy
the destruction of energy
the creation of energy
When a desk lamp is switched on, which of the following processes occur?
Light energy is converted to mechanical energy
Stored light energy is released
Electrical energy is converted to light energy
Stored thermal energy is released
As the cars of a rollercoaster race down a hill, energy transformations take place. Which of the following is true?
Some potential energy is transformed to kinetic energy and other forms of energy.
Some energy is destroyed as the car slows down.
The kinetic energy of the cars is equal to the potential energy of the cars
Kinetic energy is stored in the cars as they move downhill
Energy cannot be created or destroyed. Which statement about energy is correct?
A little energy is lost every time an energy transformation occurs
Energy can change form, but energy can never change in total amount
Conservation of energy occurs only when some of the energy is converted to light.
Because of the conservation of energy, it is possible to have a machine that would never need energy
Friction is a force that opposes motion. When friction is present, heat is usually generated. According to the law of conservation of energy, which of the following statements is true about the energy associated with friction?
The law of conservation of energy does not apply
It was not transformed from another type of energy
Some of the energy is converted into thermal energy
Energy is created with friction
Vanessa told her friend Kathy about a recent visit to her doctor for her annual physical exam. Vanessa explained that she shivered when the doctor placed a stethoscope against her skin. Why did Vanessa shiver?
Energy as heat flowed from the stethoscope to Vanessa’s skin
Energy as heat flowed from Vanessa’s skin to the stethoscope
Vanessa’s skin was cooler than the stethoscope
The stethoscope transferred cold to Vanessa’s skin
Study the illustration below, which shows two substances at different temperatures. What will happen when the warmer object is dropped into the cooler liquid?
Both the object and the liquid will exchange heat so that they both reach the temperature of the object
Both the object and the liquid will exchange heat so that they both reach the temperature of the water
The object will get even warmer as heat flows into it from the liquid
Both the object and the liquid will reach the same temperature as heat flows from the warmer object to the cooler liquid
Melissa burned her hand when she touched a hot pan as illustrated below. What method of heat transfer was responsible for this accident?
thermal conduction
thermal convection
thermal radiation
thermal insulation
As a rule, what happens when energy as heat flows between two objects at different temperatures?
The temperature of the cooler object decreases
The temperature of the warmer object increases
The temperature of the warmer object stays the same
The temperature of the cooler object increases
Energy as heat flows between objects. In what way does heat always flow?
from the air to cool objects
from warm objects to the air
from cooler objects to warmer objects
from warmer objects to cooler objects
he Law of Conservation of Energy states that...
Energy can be destroyed
Energy can be created
Energy cannot be created or destroyed
Energy is the ability to do....
do nothing
change
work
energy
Energy in motion
kinetic energy
potential energy
gravitational energy
stored energy
On a rollercoaster, where is the maximum potential energy?
At the bottom of the hill
When going around the corner
When going upside down
At the top of the hill
Gravitational potential energy depends on the ________ and ________ of the object
height and mass
friction and movement
mass and movement
height and friction
What type of energy is in this picture?
kinetic energy
potential energy
gravitational
moving energy
How does heat move?
from cold to hot
from hot to cold
it does not
it remains the same
The type of heat transfer that happens through direct contact of molecules or particles with each other is ___________________.
convection
conduction
radiation
insulation
What is the term that refers to a material being a poor conductor of heat?
conductor
convection
insulator
radiator
The kind of heat transfer that travels through space in electromagnetic waves is ______________________.
insulation
radiation
conduction
convection
Which number shows kinetic energy at its maximum?
three
two
four
five
Stored energy or energy due to its position is called
mechanical energy
kinetic energy
potential energy
thermal energy
Which of the following statements about a skier skiing down a steep slope is true?
His kinetic energy decreases and his potential energy increases
His potential energy decreases and his kinetic energy increases
Both his potential and kinetic energy increases
his mechanical energy increases
Which letter shows where is potential energy stored or at its maximum point?
Y
W
X
Z
The two types of energy listed under mechanical energy
kinetic and nuclear
potential and nuclear
chemical and thermal
potential and kinetic
. Which letter shows where kinetic energy is at is highest point?
X
Y
W
Z
The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?
mechanical to heat
sound to mechanical
potential to kinetic
kinetic to potential
Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case, the stored chemical energy in the logs was changed into
electrical energy
mechanical motion
heat and light energy
electrical and heat energy
What type of energy transfer occurs when hot water flows through cool water?
insulation
conduction
radiation
convection
Light energy is...
heat energy
energy an object has because of its position or motion
energy that travels in waves and can move through empty space
matter vibrating
