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Knihovna

Y8- Sound

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Poslední aktualizace 4 months ago
12 Dotazy
Poznámka od autora:

Formative Generation Completed!

Formative Generation Completed!

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Otázka 1
1.

What is the unit of frequency?

Otázka 2
2.

Which property of sound describes its highness or lowness?

Otázka 3
3.

The speed of sound is constant for all materials.

Otázka 4
4.

What is the range of human hearing frequency?

Otázka 5
5.

Which device is used to measure the intensity of sound?

Otázka 6
6.

Echoes are an example of:

Otázka 7
7.

Loudness is the subjective perception of sound pressure.

Otázka 8
8.

When frequency increases, what happens to wavelength?

Otázka 9
9.

What are the primary properties of a sound wave?

Otázka 10
10.

In sound waves, air particles move in

Otázka 11
11.

Which sounds have frequencies below human hearing?

Otázka 12
12.

What devices use ultrasound?