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WorksheetsThe loudest sound you’ve never heard
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
What is the main idea of the text?
a)
To explain the relationship between animals and infrasound.
b)
To describe how infrasound affects people.
c)
To describe what infrasound is and why it plays an important role
d)
To explain the uses of infrasound.
2.
Which of the following is NOT true?
a)
A hertz is the name of the unit that measures sound.
b)
Infrasound is a very high frequency sound.
c)
Humans cannot hear infrasound.
d)
Infrasound is less than 20 hertz.
3.
What happened in 1883?
a)
The first infrasound was recorded for further analysis
b)
The explosion of the Krakatoa volcano caused the biggest infrasound in history.
c)
The massive wave of infrasound caused by the volcano explosion broke windows from a thousand hundred miles away.
d)
The infrasound wave traveled around the world.
4.
Which of the following is NOT mentioned as a cause of infrasound?
a)
Auroras.
b)
Air turbulence.
c)
Wind.
d)
Hurricanes.
5.
What does the pronoun “they” in line 5 of paragraph 3 refer to?
a)
Northern lights
b)
Infrasound patterns.
c)
Scientists.
d)
Certain situations.
6.
It can be inferred from the text that…
a)
Volcano eruptions cause infrasound.
b)
Infrasound starts on the earth’s surface.
c)
Infrasound is better at predicting volcano explosions than seismographic activity.
d)
In a regular basis, infrasound is not as intense in frequency and power as when during an eruption
7.
How can spotting infrasound help pilots?
a)
They can prevent crossing treacherous areas of turbulence during their flight.
b)
They can tell passengers in advance about the intensity of the turbulences they will encounter.
c)
They can instruct flight attendants to fasten seat belts when in the turbulence.
d)
They can prevent air turbulence.
8.
What’s a negative impact of man-made infrasound?
a)
It causes confusion in animals.
b)
Whales and elephants use it to communicate from far away distances.
c)
It can increase our knowledge about animal behavior.
d)
It helps birds to navigate.
9.
It can be inferred from the article that infrasound
a)
can be detected by the human ear.
b)
. Needs to be researched more in depth.
c)
causes a feeling of uneasiness and discomfort in people.
d)
Sometimes accompanies musical pieces.
10.
What is the tone of the article?
a)
positive.
b)
neutral.
c)
pessimistic
d)
scary.
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