Basics
The two broad categories of Waves are ______ & _________.
What are ELECTROMAGNETIC and MECHANICAL.
Mechanical waves transfer ___________ through a medium.
What is a ENERGY.
All electromagnetic waves are _____________ (1 of the two structures of waves).
What is TRANSVERSE.
When waves interfere, their interference can be either __________ or ____________.
What is CONSTRUCTIVE or DESTRUCTIVE.
_________ is a transverse wave.
What is LIGHT.
What is a MEDIUM.
Give 2 examples of a transverse wave.
Alex's Choice.
Visible light color with the highest amount of energy.
What is violet?
When waves interact and the result is a smaller wave (or no wave at all), the interference has been __________________.
What is DESTRUCTIVE.
___________ is a compressional wave.
What is SOUND.
Compressional/Longitudinal waves have areas where the wave is stretched out and areas where the waves are squished together. These are called ____________ and ______________________.
Which is which for an extra 100 points.
Give 1 example of a compressional wave in real life (cannot use slinky).
Alex's Choice.
Which of these waves have the longest wavelength and the lowest frequency?
a. ultraviolet
b. visible (light)
c. infrared
What is INFRARED.
When an object is submerged in water and suddenly appears broken or bent, the light waves are being _____________.
What is REFRACTED.
We do not hear explosions from stars in space because sound waves are compressional. This means that they need a __________. They cannot travel through the vacuum of space.
What is a MEDIUM.
A wave is started by a ______________ (v-word).
Objects in a transverse wave move ________________________ (parallel or perpendicular) to the energy moving through the medium.
50 extra points to the team who can SHOW me what this means.
These waves have the highest frequency, shortest wavelength, and are the most dangerous to humans (and really all living things).
What is GAMMA WAVES!
The Law of Reflection tells us that the angle of incidence is equal to the angle of reflection. What does this mean?
Alex's Choice!
When a person sees the color white, ______.
a. all of the visible light colors have been absorbed
b. all of the visible colors have been reflected
c. the colors blue and red have been reflected
d. the colors blue and red have been absorbed
b. all of the visible colors have been reflected
EXTRA 100- when do you see black?
Frequency relates to pitch and amplitude relates to ____________________.
VOLUME.
High frequency-->High pitched.
High amplitude-->High volume.
Which of the following statements BEST describes the interaction of a compressional sound wave and matter?
a. Sound waves can transfer energy only through open space or a vacuum.
b. Sound waves can travel through a vacuum and are slowed down by matter.
c. Sound waves transfer energy by carrying matter with the wave.
d. Sound waves transfer energy through matter, but the matter does not travel with them.
d. Sound waves transfer energy through matter, but the matter does not travel with them.
There is an inverse relationship between wavelength and frequency. This means that as wavelength increases, frequency ___________.
What is a DECREASES!
And vice-versa.
What do we call the change in frequency of a wave in relation to an observer who is moving relative to the wave source.
What is the DOPPLER EFFECT.
The speed of sound waves varies with different types of media. In which media do sound waves generally travel the fastest?
a. empty space
b. gases
c. liquids
d. solids
What is d. SOLIDS!