Characteristics of Waves
What are the three characteristics of waves?
All waves are produced by vibrations, they carry energy without transporting matter, and they travel as long as there is energy to carry them.
Matter in a medium that moves in the same direction the wave travels.
Compressional Waves
A ____________ occurs when a wave strikes an object and bounces off it.
Reflection
Electromagnetic waves with the lowest frequency and longest wave length
radio waves
What device converts electromagnetic waves into sound waves?
a radio
Matter through which a wave travels.
Medium
In what type of waves does matter move back and forth at right angles to the direction the wave travels.
Transverse Waves
___________ is the bending of a wave caused by a change in its speed as it moves from one medium to another.
refraction
The range of electromagnetic waves you can detect with your eyes.
visible light
What technology uses cathode-ray tubes for images?
television
Do all waves need a medium to travel?
No
Wavelength
_____________ occurs when a wave passes around an object.
Diffraction
Give an example of a use for infrared waves.
remote control or warmth from a fire
what is a system of satellites that allows users to see an exact location.
GPS
Give three examples of mediums that waves can travel through.
Solids, liquids, and gases.
What unit of measure do we use to measures the number of wavelengths that pass a fixed point each second.
Hertz
____________ is when two or more waves overlap and combine to form a new wave.
Interference
What is the type of electromagnetic wave with the shorted wavelength and the highest frequency
Gamma rays
Name two Ultra high frequencies that can travel through matter, damage cells
X-rays and Gamma rays
Describe how matter moves in transverse waves.
Back and Forth
What is the highest point on a wave called?
Crest
Describe what happens to a wave during reflection using an example
a boat reflects off the water, and light from a flashlight bounces off a mirror.
Name the wavelengths of visible light from shortest to longest.
Violet, indigo, blue, green, yellow, orange, red
_____________ waves broadcasts info by varying the amplitude of the carrier wave.
AM Radio