Question
The diagram shows air particles in a sound wave.
Which row correctly identifies the position of a compression and position of a rarefaction?
Answer/Explanation
Ans:
A
Question
Which row gives a possible set of values for the speed of sound in ice, in water and in steam?
Answer/Explanation
Ans:D
Question
What is the approximate wavelength in air of the highest frequency sound that can be heard by a normal healthy person?
A 0.02 m
B 60 m
C 20 000 m
D 7 000 000 m
Answer/Explanation
Ans: A
Question
The diagram represents a sound wave.
What are the names of the parts of the sound wave labelled X and Y?
X | Y | |
A | amplitude | wavelength |
B | compression | rarefaction |
C | rarefaction | amplitude |
D | wavelength | compression |
Answer/Explanation
Ans: B
Question
The speed of sound is different in different states of matter.
The speed of sound in liquid water is 1500 m / s.
Which row correctly compares the speed of sound in ice and the speed of sound in water vapour with the speed of sound in water?
Answer/Explanation
Ans: C