Vocabulary
Energy
Energy 2
Wavelength
Light
100
What is Energy?
Ability to do work
100
What is the difference between Potential and Kinetic Energy?
Potential is stored energy and Kinetic is moving energy.
100
What is an example of Electrical energy?
-Batteries
-Toasters
-vacuum cleaners
_Refrigerators, blenders, computers)
100
In light, amplitude determines the______.
brightness
100
What must be present for your eyes to see anything?
Light
200
What is Wavelength?
The distance between wave peaks
200
How is energy transferred from one object to the next?
Energy can move from one object to another, like when the energy from your moving foot is transferred to a soccer ball, or energy can change from one form to another.
200
What is an example of Thermal energy?
-Electrical
-Gas stoves
-heater
200
In sound, amplitude determines the loudness of the______ .
sound
200
What are two examples of sources of light?
-the Sun
-stars
-fire
300
What is Inertia?
The tendency for an object in motion to remain in motion, or an object at rest to remain at rest
300
Energy cannot be_______ or ________.
created or destroyed
300
What is an example of Chemical energy?
-gasoline to drive
300
How can a wave be measured?
To measure a wave, we look at its highest point (crest) and lowest point (trough). The distance from one trough to the next is called its wavelength. You can time the number of crests that happen in one minute. That will tell you the frequency of a wave.
300
Light energy can be converted to______ or_____ when certain materials absorb it.
heat or thermal energy
400
What is Amplitude?
Height of the wave
400
How is energy carried from one place to another?
electric current
waves
moving objects
400
Why would an ice cube melt faster on a darker-colored surface?
Dark colors absorb light and light colors reflect light
400
Give an example of how waves can cause objects to move.
You could see the energy wave in the spring and you could see evidence that sound waves traveled through the air when the rice vibrated near the vibrating speaker.
400
What is Light source?
Anything that makes light, such as the sun, a light bulb, or a flame.
500
What is Momentum?
Measurement of mass in motion
500
What is Thermal Energy? Give two examples.
The energy that comes from a fire is thermal energy. When we raise the temperature of matter the particles vibrate faster.
Example: Electrical, gas stoves, room heater
500
When dropped, can a dropper popper bounce higher than its starting height?
When the popper is “energized,” it gains Elastic (stretchy) Potential Energy. When the popper flips back to its original position, the Elastic Potential Energy is converted to Kinetic Energy and the popper flies into the air. The original Elastic Potential Energy and Gravitational (based on height above ground) Potential Energy of the Popper combine to determine the Total Energy of the popper. This will determine the maximum Kinetic Energy the Popper can gain as it flies upward.
500
Draw a diagram of a wave and label the amplitude and wavelength
500
How we are able to see things?
We are able to see because light from a light source reflects from objects and enters our eye.