8.27.W - Lesson Review: Sound / Doppler Effect & Echolocation / Electromagnetic Spectrum Flashcards

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1
Q

At 140 decibels of sound, humans experience ____________.
joy
peace
music
pain

A

pain

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2
Q

Which of these mediums will sound travel through the fastest?
outer space
iron
air
water

A

iron

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3
Q

What is the maximum loudness—or decibels—that a human can hear without having pain?
0 dB
120 dB
100 dB
140 dB

A

120 dB

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4
Q

Which is the best word to describe pitch?
vibration
frequency
tone
echo

A

frequency

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5
Q

The highness or lowness of a sound determined by the frequency of the waves is called _____________.
wavelength
amplitude
echo
pitch
acoustics

A

pitch

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6
Q

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

A

echolocation

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7
Q

Sounds are reflected best when bounced off of [answer], hard surfaces.

A

smooth

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8
Q

The Doppler effect is used to figure out how [answer] objects are moving in space.

A

fast

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9
Q

As a source of sound moves toward you, the pitch you hear is _________.
staying constant
varying
dropping
rising
softening

A

rising

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10
Q

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

A

sonar

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11
Q

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

A

UV waves are higher frequency and carry more energy

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12
Q

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

A

longer; less

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13
Q

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

A

orange, yellow, green, blue

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14
Q

Which example is NOT a part of the electromagnetic spectrum?
electricity
radio waves
purple light
microwaves

A

electricity

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15
Q

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

A

radio waves

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16
Q

How is sound produced? Please respond in 1–2 complete sentences using your best grammar.

A

Your Answer:
Sound is produced by Vibrations traveling through different types of medium.

17
Q

What is the electromagnetic spectrum? Please respond in 1–2 complete sentences using your best grammar.

A

Your Answer:
The electromagnetic spectrum is radio waves, microwaves, Infrared waves, visible waves, ultraviolet waves, x-ray waves, and gamma-ray waves.

18
Q

Match each of the following descriptions to its area of the electromagnetic radiation spectrum:

the radiation that allows us to see through the skin to visualize the bones

X-rays
gamma rays
infrared
microwaves

A

X-rays

19
Q

Match each of the following descriptions to its area of the electromagnetic radiation spectrum:

kill cancer cells

X-rays
gamma rays
infrared
microwaves

A

gamma rays

20
Q

Match each of the following descriptions to its area of the electromagnetic radiation spectrum:

detects the energy our bodies release so we can see people through walls with specialized cameras

X-rays
gamma rays
infrared
microwaves

A

infrared

21
Q

Match each of the following descriptions to its area of the electromagnetic radiation spectrum:

heating foods and liquids rapidly

X-rays
gamma rays
infrared
microwaves

A

microwaves