G5 Q3 Sound energy, Electric Circuit and Electromagnetism

How are sound produced?

• By the movement of air
• By the vibration of an object
• By the reflection of light
• By the rotation of the Earth

Sound produced by vibrating objects travels as waves called ________.

• light waves
• water waves
• longitudinal waves

• electromagnetic waves

Sound is transmitted through particles of matter. Without matter sound cannot be transmitted.

• true

• false

In which of the following sound travels fastest?

• solid

• liquid

• gas

In which of the following sound travels fast?

• high temperature

• low emperature

Properties of sound

a

b

c

d

wavelength

trough

crest

amplitude

It represents the number of waves produced in a given time in seconds.

• amplitude
• wavelength
• velocity
• frequency

A high pitch sound has SHORT wavelength and HIGH frequency.

• true

• false

it is the highness of lowness of the frequency of sound.

• Temperature
• Color
• Pitch
• Volume

It determines the loudness of the sound and is measured in decibels (dB)

• Pitch
• Intensity

• Wavelength
• Frequency