Wave Properties
What is a medium?
The matter a wave travels through
What is reflection?
The wave bounces off and heads in a different direction.
What is the title of lesson 3?
Sound Waves
What is an electromagnetic wave?
A wave made up of vibrating electric and magnetic fields that can move through space at the speed of light.
What does transparent mean?
See though
This type of wave forms a 90 degree angle.
Transverse Wave
What does it mean for waves to be absorbed by a certain medium?
The energy of the wave is transferred to that medium or material.
What is loudness?
Awareness of the energy of a sound.
Of X-rays, radio waves, and visible light, which wave type has the most energy? Explain
X-rays, because they have the highest frequencies
The color we see is the light that is ______________ by an object.
reflected
What is frequency and what is the unit we use to measure it?
Did you ever wonder how you can hear someone speaking even if they are around the corner of a building or doorway? This is an example of __________.
Diffraction
What property of a sound wave determines the pitch of a sound?
Frequency
On the electromagnetic spectrum, which wave has the highest frequency?
Gamma Rays
Name the difference between regular reflection and diffuse reflection.
regular hits an even surface and diffuse hits an uneven surface.
If you and a friend are standing at opposite ends of a gymnasium and one of you claps, will the other person hear the clap at the same time she sees it happen? Why or Why Not?
No, because it takes more time for sound to reach our ears than for the light from the event to travel to our eyes.
Name the two different types of wave interferences.
Constructive and Destructive
Name the factors that affect the speed of sound.
Stiffness, Density, Temperature, and Compressibility
What are the two models of light?
Wave model and particle model
What kind of material transmits some light, making objects behind it appear blurry?
Translucent material, such as waxed paper.
What is the formula for wave speed?
Wave speed = Wavelength x Frequency
Which type of wave interference could cause sound to become louder?
Constructive interference; the waves interfere such that the crests overlap and the amplitudes add together.
What are four things that can happen to sound waves when they reach a barrier?
They can be reflected, transmitted, absorbed, or diffracted.
Can radio waves be used to form images of your bones like x-rays are? Why or why not?
No. Radio waves have very low frequencies, so they don't have enough energy to penetrate my body and reflect off my bones.
When a person is nearsighted, an eyeglass lens is needed to bend light entering the eye away from the optical axis. What type of lens do this?
A concave lens