Causes
properties
interactions
problems
applications
100
What causes large ocean waves (not tidal waves)
large fetches of wind
100
Word that means the top of the wave:
Crest
100
What is it called when a wave's energy is transferred into the medium?
absorption
100
A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave? s=w*f
500m/s
100
An EM voltage change makes changes in the ______________ and _____________ fields
Electric, magnetic
200
What causes Tsunamis?
Ocean floor uplift or displacement
200
word that means the midway point between crest and trough on a transverse wave
rest point
200
What is the law of reflection?
Angle of incidence equals angle of reflectance
200
A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave? S=w*f
w=5m
200
What is the main wave interaction that makes good waves at point breaks all over CA?
Diffraction
300
What initiates a microwave signal to your cell phone?(what happens in the antenna to create a signal)
Voltage changes
300
What is the word for the linear distance of one full cycle of a wave?
wavelength
300
What happens as waves go through a slit or bend around the edge of a point?
Diffraction the waves spread out in a curved pattern
300
A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave? s=w*f
(Remember the unit of 1/s=Hz)
f=34 Hz
300
Where is the border line between ionizing and non ionizing radiation?
between visible and UV
400
Describe the first mobile phones
An AM/FM radio reciever with a telephone talking set connected
400
What is the word for how often a full cycle of the wave will pass a given point per second?
frequency
400
What happens as light passes through a denser medium?
Refraction- it slows down and changes direction within the medium.
400
Radio waves travel at a speed of 300,000,000 m/s. WFNX broadcasts radio waves at a frequency of 101,700,000 Hertz. What is the wavelength of WFNX’s radio waves? S=w*f
w=2.95m
400
How was the wave nature of light discovered by Thomas Young?
Shooting beams of light through slits and noticing diffraction and interference patterns
500
What primarily is responsible for shielding us from ionizing radiation like gamma rays? How does that occur?
The Earth's magnetic field, caused by the transfer of heat (convection currents) between the core and inner mantle
500
draw the pyramid for wavelength /frequency /speed problems.or give the formula
500
What happens in constructive interference
two waves amplitudes are added together in one wave
500
A wave has a frequency of 900 Hz and a wavelength of 200 m. At what speed is this wave traveling? S=w*f
S=180,000m/s
500
Explain how the speaker in a lid worked
The voltage change created a changing electric and magnetic field, the coil became a small electromagnet which the voltage pulses were able to be amplified by the stationary magnet to move the plastic lids to make shock waves in the air that created sound