| Waves | ||
| #1 | The kind of wave that has oscillations in the same direction as its travel is called | Longitudinal |
| #2 | The greatest distance on a transverse wave that an oscillator moves from its equilibrium is called its | Amplitude |
| #3 | The product of the frequency and wavelength of a wave equals its | Speed |
| #4 | The frequency of a wave is 25 kHz, what is its period in seconds in correct sig figs?? | .000040 seconds or 4.0 x 10^-5 sec |
| #5 | A sound wave generated at 510 Hz has a wavelength of 240 cm. What is the speed of this wave in standard SI units and correct sig figs? | 1,200 m/sec |
| Sound | ||
| #1 | True or false: sound travels in transverse waves | False -- longitudinal |
| #2 | The loudness of a sound is measured in what SI unit? | decibels -- dB |
| #3 | True or false: According to the equal loudness curve, at the same dB level higher frequency sounds seem louder to the human ear | true |
| #4 | True or false: sound travels faster in air as compared to water | false |
| #5 | Because of the ____________, how will the frequency and pitch of someone playing the same note on a trumpet sound as they speed toward you on a hover board? | doppler effect -- frequency and pitch will be higher |
| Light | ||
| #1 | All electromagnetic waves travel at what speed abbreviated by what symbol? |
The speed of light = c |
| #2 | True or false: microwaves are the longest waves on the electromagnetic spectrum | false -- radio waves |
| #3 | True or false: Infrared light is higher in energy than red light | false -- lower in energy |
| #4 | Light travels at 300,000,000 m/sec. How long does it take light to travel across this room, which is about 15 meters long? | .00000005 seconds 5x10^-8 sec 50 nanoseconds |
| #5 | What is the frequency of light with a wavelength of 620 nm? | 4.8x10^14 Hz or 480 THz or 480,000,000,000,000 Hz |
| Color | ||
| #1 | A green leaf reflects primarily what color(s) of light? | green light |
| #2 | The cones on the retina of most human eyes detect wavelengths of what color(s)? | red, green, and blue light |
| #3 | If red, green, and blue light are combined humans will see what color of light? | White light |
| #4 | True or false: Our vision is based off of the subtractive color process | False: the additive (RGB) color process |
| #5 | In the visible portion of the electromagnetic spectrum, which color has a higher energy than orange light and a longer wavelength than green light? | Yellow light |
| Optics | ||
| #1 | True or false: A diverging lens will have a focal point | False |
| #2 | We say tissue paper is ______________, because light passes through it but is scattered | translucent |
| #3 | The law of reflection states that the angle of incidence is ________ to the angle of reflection, and these angles are measured from the light ray to the line of ____________ | Equal line of normal |
| #4 | As light leaves a glass prism into the air at an angle, it will bend __________ the line of normal | Away from |
| #5 | Draw what happens as 3 light rays pass through a converging (double convex) lens |
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| Final Question | |
List the portions of the electromagnetic spectrum from lowest energy to highest energy, and break the visible portion of the spectrum into colors (lowest to highest energy) |
Radio waves, microwaves, infrared, visible, ultraviolet, x-rays, gamma rays
Red, Orange, Yellow, Green, Blue, Indigo, Violet |