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Energy transformations
Energy transformations
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1
When Frosty begins to melt, the following energy transformation occurs:
light -> chemical -> heat
chemical -> heat -> solar
radiant -> thermal -> kinetic
potential -> sound -> heat
2
Which of the following shows the energy change of a flashlight in the correct order?
Thermal -> Chemical -> Electromagnetic
Chemical -> Electric -> Radiant- Thermal
Electrical -> Mechanical -> Chemical
Mechanical -> Thermal -> Chemical
3
What energy transfermations are happening
radiant to kinetic to thermal
light to chemical to physical
radiant to chemical to mechanical
radiant to mechanical to thermal
4
What energy conversions are occurring in this image?
Radiant --> electrical --> chemical
Electrical --> radiant --> sound
Chemical --> electrical --> radiant
Thermal --> electrical --> radiant
5
TV Energy Transformations in Order:
Electrical to Sound and Radiant to Thermal
Thermal to Nuclear to Radiant to Sound
Electrical to sound to mechanical to radiant
Electrical to Sound to Thermal to Mechanical
6
What energy transformation is this?
Chemical-thermal-Sound
Mechanical-Chemical-Thermal
Chemical-Mechanical-Thermal
Wood-Rubbing-Fire
7
What is Chemical Energy?
Energy that is created by mixing chemicals
Energy in the form of heat
The energy that is stored in the bonds between atoms
Nuclear energy used to make a system work
8
What is Electric Energy?
Light is a source of illumination can be a natural one or an artificial one
Batteries store electricity
Energy that results in the movement of electrons through a conductor
Power of the light
9
What energy transformations occur in digestion and in a gasoline engine?
chemical -> mechanical-> thermal
thermal -> chemical -> electromagnetic
thermal -> mechanical -> chemical
mechanical -> nuclear -> thermal
10
Which of these show Chemical Energy?
A Battery
Microwave
Standing Still
Bowling Ball
11
The Law of Conservation of Energy is...
The capacity for creating energy
Laws concerning energy and pollution
Energy cannot be created or destroyed only transformed from one to another
The process of changing from one form to another
12
_______________ is energy like power outlets, lightning, blender, etc.
Mechanical Energy
Electrical Energy
Chemical Energy
13
What energy transformations are associated with a TV set
Chemical --> light and sound
Chemical --> light
Electrical --> heat and sound
Electrical --> light, sound and heat
14
What is the energy transformation that occurs when someone turns on a light?
Electrical to Radiant to Heat
Mechanical to Light to Heat
Electrical to Heat to Light
15
When you light a firework, what energy conversions are happening?
Mechanical energy changes to thermal energy
Electrical energy changes to light energy
Chemical energy changes to heat, light and sound
Thermal energy changes to chemical energy
16
What is the energy transformations that occurs when you rub your hand together?
Mechanical to Thermal
Thermal to Thermal
Chemical to Thermal
17
Energy cannot be created or destroyed.
Energy Conversions
Mechanical Energy
Thermal Conductor
Law of Conservation of Energy
18
What energy conversions is taking place?
Chemical energy to electrical energy.
Heat energy to electrical energy.
Mechanical energy to electrical energy.
Light energy to electrical energy.
19
Heat transfers thermal energy...
from cold energy to colder energy.
from warm objects to cooler objects.
from warm objects to hot objects.
in waves that vibrate back and forth.
20
During energy transformations, energy is never __________
Completely transformed
Created or destroyed
Used to increase an object's potential energy
Released as heat
21
Energy that warms objects.
chemical energy
light energy
sound energy
thermal energy
22
Choose an object of radiant energy...
A blackboard
A person
The sun
A paper
23
What are the energy transformations in a hair dryer?
Chemical to Thermal
Electrical to Thermal
Electrical to Radiant
24
When you turn on an electric light, what energy transformation has occurred?
Mechanical -> Light+Heat
Chemical -> Light+Heat
Chemical -> Electrical+Heat
Electrical -> Light+Heat
25
Which of these positions correctly describe the transformations of energy at each of the positions in the diagram?
Position 4:Kinetic energy is decreasing and potential energy is increasing.
Position 2:Kinetic energy is increasing and potential energy is decreasing.
Position 3:Kinetic energy is increasing and potential energy is increasing.
Position 1:Kinetic energy is decreasing and potential energy is increasing.
26
What energy transformation occurs in a toaster?
Chemical to Electrical Energy
Electrical to Thermal Energy
Chemical to Mechanical
27
Will was riding his bike and had to quickly slam on his brakes. During this quick stop some of the mechanical energy...
changed into light
changed to gravitational
changed into thermal
changed to kinetic
28
What energy transformations occur in a propane powered lantern?
mechanical to heat to light
electrical to heat to light
chemical to heat to radiant
chemical to light to radiant
