Kinetic Energy
Potential Energy
Forms of Energy
Energy Transformations
Heat Transfer
100
Kinetic energy is the energy of _________.
Motion
100
Potential energy is _________ energy.
Stored
100
Type of energy stored in food, charcoal and batteries
Chemical Energy
100
What does the law of conservation of energy say?
Energy cannot be created or destroyed, only transformed.
100
Name the 3 types of heat transfer
conduction, convection, radiation
200
Kinetic energy has two variables that affect it.
mass and speed
200
Potential energy has two variables that affect it.
mass and height
200
Type of energy that depends on an object's height
Gravitational potential energy
200
What energy transformation do all three items have in common? (2 answers)
Electrical --> Thermal
200
Heat always transfers from ___________ to __________. (Must be in order to get credit)
warmer
cooler
300
The KE of an object increases as its _____ increases.
a. height
b. velocity/speed
c. gravity
b. velocity/speed
300
Which point has the most PE?
W
300
Type of energy formed by vibrating objects
Sound energy
300
You plug in a speaker to play music. What is the energy transformation? (2 answers)
Electrical --> Sound
300
This type of heat transfer involves direct contact and occurs most frequently in solids.
Conduction
400
At which point is KE the greatest?
X
400
What will happen to the total amount of PE at the point Y and why?
It will be less because the hill is not as high as the first.
400
The total amount of KE and PE in a system
Mechanical Energy
400
You put gas in your car then drive off. What is the energy transformation? (2 answers)
Chemical --> Mechanical
400
This type of heat transfer creates currents. It involves less dense particles rising and more dense particles sinking.
Convection
500
How would you increase the kinetic energy of an object? (There are two different ways)
Increase the height, so it starts with more PE
or
Increase the mass
500
When an object is dropped, what happens to its KE and PE?
a. KE and PE increases
b. KE decreases, PE increases
c. KE increases, PE decreases
c. KE increases, PE decreases
500
List all 5 types of kinetic energy
Sound, thermal, radiant, electromagnetic, electrical
500
When you work out, you sweat. What kind of energy transformation is happening? (2 answers)
Mechanical --> Thermal
500
This type of heat transfer does not require a medium for it to pass through. This space is called a vacuum. It is the transfer of heat through electromagnetic waves.
Radiation
600
List 3 types of energy in this picture with a short explanation.
electrical- charging phone
chemical- battery pack
electromagnetic- sending a text
radiant- light from phone
thermal- heat from phone
sound- sound from phone
600
Plants convert radiant energy from the sun into _____ energy during photosynthesis.
Chemical
600
What is the Law of Conservation of Energy?
Energy cannot be created nor destroyed, just changed from one form to another.