EM Waves
Wave Properties
Light Behavior
Waves in Different Media
Energy & Heat
100
How does energy from the sun travel to Earth?
Radiation
100
What is point D called?
Wavelength
100
A girl looks out over a lake and sees an image of the skyline on the surface of the water below. What type of light interaction is occurring?
Reflection
100
What is a medium?
Material waves travel through (Solid, Liquid, Gas)
100
Heat moves from ______ objects to ______ objects.
Heat moves from warmer objects to cooler objects.
200
What type of EM wave can you see with your eyes?
Visible Light
200
What is point A called? What is point C called?
A: Trough
C: Crest
200
A pencil placed in a glass of water appears broken/bent. What property of light is causing this effect?
Refraction
200
Light travels fastest in which state of matter? Sound travels fastest in which state of matter?
Light: Gas (Air)
Sound: Solid
200
Energy of motion is called what? Stored energy is called what?
Motion: Kinetic
Stored: Potential
300
What type of EM wave from the sun has the highest frequency? Lowest frequency?
Highest: Gamma Rays
Lowest: Radio Waves
300
The number of waves passing a point in a given amount of time (usually one second) is called what?
Frequency
300
Your car becomes very warm when left in out in sunlight. What is happening to the light energy?
It is being absorbed (Absorption)
300
Why does light bend when it enters water from air?
It changes speed (refraction)
300
Energy cannot be created or destroyed, only transformed from one form to another. What is this called?
Law of Conservation of Energy
400
What is the relationship between a wave's wavelength and frequency?
Wavelength and frequency have an inverse relationship. High-frequency waves have shorter wavelengths, while low-frequency waves have longer wavelengths.
400
Which type of wave is light: transverse or longitudinal? Which type of wave is sound: transverse or longitudinal?
Light: Transverse
Sound: Longitudinal
400
How does light normally travel if it does not hit anything?
In a straight line
400
Sound is a _____ wave, because it cannot travel without a medium.
Mechanical
400
What energy transformations take place when a battery-powered radio is in use?
Chemical -> Electrical -> Sound
The batteries chemical energy is converted into electrical energy that powers the radio which creates sound when in use.
500
What is the ORDER of the colors in the color spectrum?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
(ROYGBIV)
500
Emma is trying to measure the maximum displacement of a wave, what is Emma measuring? (Point B)
Amplitude
500
A student shines a flashlight at two different surfaces: one is shiny metal and the other is black cloth. Compare how the light will interact with each surface.
Shiny metal reflects most of the light; black cloth absorbs most of the light
500
Two materials are compared: one where particles are close together and one where they are far apart. Which material will allow sound waves to travel faster?
Material with particles closer together
500
Gordon throws a baseball into the air. it rises, stops momentarily when it reaches its greatest height, and then falls back to the ground. At what point does kinetic energy convert to potential energy?
After the ball reaches the highest point and begins to fall down again.