Waves 1
Waves carry __________
Energy
I have the longest wavelength on the spectrum
Radio waves
Sound waves cannot carry energy through what?
A vacuum
The distance from crest to crest or trough to trough
Wavelength
What type of wave is a sound wave?
longitudinal mechanical wave
The property of a wave causes the wave to change speed as it enters a different medium.
Refraction
What is the only electromagnetic radiation (light wave) you can see?
Visible light
What is a medium? Give an example
material that mechanical wave needs to travel through.
solid, liquid, Gas
What is the height of a wave known as?
Amplitude
If you were in outerspace, would anybody be able to hear you scream?
No. Require medium to travel through
This type of wave does not need matter to transfer energy.
Electromagnetic wave
On the electromagnetic spectrum, what happens to the ENERGY as we move from gamma waves to radio waves?
Energy decreases
Why can we see nuclear explosions on the Sun but not hear them?
Light waves can go through the vacuum of space, sound waves need a medium to pass through.
What happens when the wavelength gets longer?
Frequency becomes lower; energy becomes lower
Sound waves spreading or bending as they move around the edge of an obstacle is an example of?
Diffraction
High frequency waves have _______ wavelengths.
SHORT
What is a practical application of a radio wave
radio, TV, military communications, phone.
Sound waves will travel faster in this kind of matter.
Solid
How can you tell if a wave has a high amount of energy?
High frequency or high amplitude
Explain why sound waves travel the fastest in solids.
solids: particles very tightly packed therefore sound waves can vibrate off of the particles very quickly.
Describe the relationship between amplitude and energy of a wave
high amplitude=high energy
low amplitude=low energy
In what medium do light waves travel the slowest? the fastest?
slowest = solid
fastest = gas
**light SLOWS down in more dense materials **
What type of wave can travel through a vacuum?
EM Wave
(Radio, Light, UV, Infrared, Microwave)
What is the number of wavelengths that pass a given point per second.
Frequency
Explain why you will never hear an explosion in space
Because space is a vacuum and there are no particles for the sound to travel through