Grade 8 Sound by amal

Froggy Jumps

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term 2

Created by

Ph. Amal

Saudi Arabia

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Froggy Jumps Grade 8 Sound by amalOnline version term 2 by Ph. Amal 1 The intensity of sound is indirectly proportional to ........ a the square of the distance from the source b the square of the amplitude c the distance from the source 2 The measuring unit of sound intensity is ___________ a decibel. b watt/m² c Hertz. 3 8.As the number of teeth of the gear in Savart’s wheel increases, the ........ of the produced sound increases. a intensity b frequency. c quality 4 The sound pitch increases by ........ a the decrease in frequency. b the increase in the distance between the ear and the sound source. c the increase in frequency. 5 The intensity of sound is directly proportional to ........ a the square of the distance from the source b the square of the amplitude c the sound velocity 6 When the distance between the sound source and the ears is doubled, the sound intensity ........ a decreases to its half. b increases four times. c decreases to its quarter. 7 The human ear can distinguish sounds of frequency: a 300 Hz b 50,000 Hz c 10 Hz 8 The dolphin’s trainer uses a whistle producing a sound which can be heard by dolphins and cannot be heard by man, the frequency of such sound equals: a 300 cycles/sec b 25000 cycles/sec c 5 cycles/sec

Froggy Jumps

Grade 8 Sound by amalOnline version

term 2

by Ph. Amal

The intensity of sound is indirectly proportional to ........

the square of the distance from the source

the square of the amplitude

the distance from the source

The measuring unit of sound intensity is ___________

decibel.

watt/m²

Hertz.

8.As the number of teeth of the gear in Savart’s wheel increases, the ........ of the produced sound increases.

intensity

frequency.

quality

The sound pitch increases by ........

the decrease in frequency.

the increase in the distance between the ear and the sound source.

the increase in frequency.

The intensity of sound is directly proportional to ........

the square of the distance from the source

the square of the amplitude

the sound velocity

When the distance between the sound source and the ears is doubled, the sound intensity ........

decreases to its half.

increases four times.

decreases to its quarter.

The human ear can distinguish sounds of frequency:

300 Hz

50,000 Hz

10 Hz

The dolphin’s trainer uses a whistle producing a sound which can be heard by dolphins and cannot be heard by man, the frequency of such sound equals:

300 cycles/sec

25000 cycles/sec

5 cycles/sec

You can integrate the game into an LMS compatible with LTI 1.1 or LTI 1.3 such as Canvas, Moodle, or Blackboard. This way, the scores will be automatically saved into the platform’s gradebook.

Grade 8 Sound by amal

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Grade 8 Sound by amalOnline version

by Ph. Amal

The intensity of sound is indirectly proportional to ........

The measuring unit of sound intensity is ___________

8.As the number of teeth of the gear in Savart’s wheel increases, the ........ of the produced sound increases.

The sound pitch increases by ........

The intensity of sound is directly proportional to ........

When the distance between the sound source and the ears is doubled, the sound intensity ........

The human ear can distinguish sounds of frequency:

The dolphin’s trainer uses a whistle producing a sound which can be heard by dolphins and cannot be heard by man, the frequency of such sound equals:

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