8.27.W - Lesson Review: Sound / Doppler Effect & Echolocation / Electromagnetic Spectrum Flashcards
At 140 decibels of sound, humans experience ____________.
joy
peace
music
pain
pain
Which of these mediums will sound travel through the fastest?
outer space
iron
air
water
iron
What is the maximum loudness—or decibels—that a human can hear without having pain?
0 dB
120 dB
100 dB
140 dB
120 dB
Which is the best word to describe pitch?
vibration
frequency
tone
echo
frequency
The highness or lowness of a sound determined by the frequency of the waves is called _____________.
wavelength
amplitude
echo
pitch
acoustics
pitch
What do we call the ability to bounce sound off an object and detect where and what that object is?
reverberation
acoustics
echolocation
Doppler effect
echolocation
Sounds are reflected best when bounced off of [answer], hard surfaces.
smooth
The Doppler effect is used to figure out how [answer] objects are moving in space.
fast
As a source of sound moves toward you, the pitch you hear is _________.
staying constant
varying
dropping
rising
softening
rising
One practical use of echolocation is to measure the depth of the oceans. The device that is used to transmit the sound waves to the ocean floor is called _____________.
sonar
electromagnetic wave machine
sonic boom
electrolysis
radar
sonar
We spend our lives in visible light without risks to our health, yet exposure to UV waves in sunlight can cause skin cancer. What is the BEST explanation for this?
UV waves have a lower frequency and carry more energy
UV waves are longer and carry more energy
UV waves are higher frequency and carry more energy
UV waves travel faster than visible light and have more energy
UV waves are higher frequency and carry more energy
The wavelengths of radio waves are much _______________ than the wavelengths of microwaves. Therefore, radio waves carry much __________ energy than microwaves.
shorter; less
longer; more
shorter; more
longer; less
longer; less
In the visible spectrum, red light has the lowest frequency and violet light has the highest.
List the following colors in order of increasing energy.
green
blue
yellow
orange
blue, green, yellow, orange
orange, yellow, green, blue
green, blue, orange, yellow
yellow, orange, blue, green
orange, yellow, green, blue
Which example is NOT a part of the electromagnetic spectrum?
electricity
radio waves
purple light
microwaves
electricity
The picture lists light waves from left to right in order of highest to lowest energy. Which region of the electromagnetic spectrum has the longest wavelength?
UV
radio waves
visible light
gamma rays
radio waves
