Energy Unit Review 2023

Exploring Energy:

Unleashing the Power Within

Energy Trivia

Did you know? Energy is not the force exerted on an object. It is the ability to do work. It is what powers our everyday activities and keeps the world moving. Without energy, nothing would happen! Here are some interesting facts about energy:

• Energy can neither be created nor destroyed, only transformed from one form to another.
• The unit of energy is the joule (J).
• Renewable energy sources, such as solar and wind power, are becoming increasingly important in our efforts to reduce carbon emissions and combat climate change.

Multiple Choice

Which of the following is a correct statement about energy?

• Energy is the ability to do work or cause cahnge

• Energy is the mass of an object.

• Energy is the speed of an object.

• Stored Energy

• More Mass = More Potential Energy

• Higher Up = More Potential Energy

Potential Energy

• Energy of Motion

• More Mass = More Kinetic Energy

• More Speed = More Kinetic Energy

Kinetic Energy

Kinetic vs Potential Energy

​The more massive an object is, the more PE an object has.

​

Potential Energy and Size

​These Pandas are close to the ground. It did not take a lot of work to get there, so they have very little PE.

​​Less Potential Energy

This car needed a lot of energy to get to the top of the hill. That means this car as a lot of PE.

More Potential Energy

​How does position affect PE?

Hotspot

Click on where the rollercoaster has the MOST potential energy.

Multiple Choice

Which position in the picture does Myra have the most Potential energy?

• 1

• 2

• 3

• 4

Any moving object has Kinetic Energy

The faster an object is moving, the more Kinetic Energy it has.

The more massive an object, the more KE it has

​

How does Kinetic Energy Work?

Multiple Choice

Which has more Kinetic Energy: A person running 5 m/s or a car driving 5 m/s?

• The Car

• The Person

• Same

• Neither

Open Ended

Which of these do you think has greater kinetic energy? Explain your answer.

Multiple Choice

At which point is kinetic energy greatest?

• W
• X
• Y
• Z

Multiple Choice

The faster an object moves, the ________ kinetic energy it has.

• more

• less

• none of the above

• all of the above

Multiple Choice

The graph below shows the relationship between mass in kilograms and Kinetic energy in kiloJoules.  Which statement best describes the relationship shown in the graph?

• As mass increases, kinetic energy increases (direct relationship)

• As mass increases, kinetic energy decreases (indirect relationship)

• As mass increases, kinetic energy stays the same (static relationship)

• As mass increases, kinetic energy increases and decreases in a repeating pattern (cyclic relationship)

Conservation of Energy

Trivia: The law of conservation of energy states that energy cannot be created or destroyed, but it can be transferred or change form.

Multiple Choice

What is the law of conservation of energy?

• Energy can be created and destroyed

• Energy can only be transferred

• Energy can only change form

• Energy is not created or destroyed but can be transferred or change form

Thermal Energy Basics

• Temperature vs. Thermal Energy: Temperature measures the average kinetic energy of particles, while thermal energy is the total kinetic energy of all particles in a substance.

• Heat Transfer Methods: Convection is the transfer of heat through fluids, conduction is the transfer of heat through direct contact, and radiation is the transfer of heat through electromagnetic waves.

• Phase Change Terms: Freezing is the transition from liquid to solid, condensation is the transition from gas to liquid, and evaporation is the transition from liquid to gas.

Multiple Choice

Which method of heat transfer involves the transfer of heat through direct contact?

• Convection

• Conduction

• Radiation

• Evaporation

Fill in the Blanks

Multiple Choice

The _______ energy from the sun provides ____________ and ____________ energy that can be harnessed and used for solar power.

• mechanical, chemical, sound

• thermal, mechanical, light

• nuclear, sound, light

• nuclear, light, thermal

Multiple Choice

What type of energy do we use to cook food on the stove?

• A. mechanical

• B. light

• C. thermal

• D. sound

Multiple Choice

What type of energy do we get from the food we eat?

• light

• thermal

• chemical

• sound

Multiple Choice

In order to watch television, electrical energy is converted to

• nuclear and sound

• electromagnetic and sound

• chemical and thermal

• mechanical

Multiple Choice

Heat transfers from an area of ____temperature to an area of ___ temperature.

• high to low
• low to high
• high to high
• It can travel high to low and low to high. 

Multiple Choice

Heat is the movement of thermal energy from a substance at a higher temperature to another at a lower temperature.

• false

• true

Drag and Drop

The temperature in the room is 18C.  The temperature outside is 10C.  If Mary opens the window, which direction will the heat energy flow?

​

Placeholder

Drag these tiles and drop them in the correct blank above

inside to outside

outside to inside

it won't flow at all

Conduction

Trivia: Conduction is the transfer of heat through direct contact. It occurs when two objects at different temperatures come into contact with each other. An example of conduction is when you touch a hot pan and feel the heat transferring to your hand. Conduction is an important method of heat transfer in solids.

Drag and Drop

Curling Iron

Placeholder

Drag these tiles and drop them in the correct blank above

Conduction

Convection

Radiation

Drag and Drop

Metal is a good

Placeholder

Drag these tiles and drop them in the correct blank above

Conductor

Insulator

Drag and Drop

Weather Patterns

Placeholder

Drag these tiles and drop them in the correct blank above

Conduction

Convection

Radiation

Multiple Choice

Which is less dense?

Warm Air or Cold Air

• Warm Air because it rises

• Cold Air because it rises

• Cold Air because it sinks

• Warm Air because it sinks

Dropdown

Heat Lamps

Select answer

Dropdown

Heat Transfer happening in outer space

Select answer

Exploring Energy:

Unleashing the Power Within: Adding or removing energy can change an object's temperature or phase of matter, but not both at the same time. Phase changes can be labeled on a heating curve, and the boiling point and melting/freezing point of a substance can be identified

Multiple Choice

What can adding or removing energy do to an object?

• Change its temperature

• Change its phase of matter

• Change both its temperature and phase of matter

• Change neither its temperature nor phase of matter

Multiple Choice

When the temperature of matter increases the particles...

• speed up and move closer

• speed up and move farther apart

• slow down and move farther apart

• pressure decreases

Multiple Choice

What is it called when the state of matter changes from a liquid to a solid?

• Melting

• Freezing

• Condensation

• Boiling

Multiple Choice

When water sits in the freezer and freezes into ice, it is because the water has...

• gained mass

• gained energy

• lost mass

• lost energy

Multiple Choice

When ice sits out on a counter and melts, it is because the ice has...

• gained mass

• gained energy

• lost mass

• lost energy

Multiple Choice

What is the phase change of a solid to a liquid?

• freezing
• melting
• boiling
• condensation

Multiple Choice

2. A change of state from a liquid to a solid is called....

• Melting
• Freezing
• Evaporation

Multiple Choice

The phase change from water vapor to liquid water is known as...

• evaporation
• precipitation
• condensation
• sublimation

Multiple Choice

What is an example of evaporation?

• Water boiling
• Water turning into ice
• Chocolate bar turning into liquid chocolate
• Fog forming on a mirror

Copyright © 2011 MsRazz ChemClass

Multiple Choice

Describe the substance or change between letters D and E. 

• Gas
• Solid

• Melting
• Evaporating

Multiple Choice

The freezing point of the sample is

• -60 ºC

• -100 ºC

• 60 ºC

• 100 ºC