Which of the following best describes how sound travels through air?

• In a straight line without any disturbance

• As a series of compressions and rarefactions

• As visible waves

• Only when there is light

What is the unit used to measure the frequency of a sound wave?

• Decibel (dB)

• Hertz (Hz)

• Metre (m)

• Watt (W)

Which property of sound determines how high or low a note sounds to us?

• Amplitude

• Frequency

• Wavelength

• Speed

What does the amplitude of a sound wave relate to?

• The pitch of the sound

• The loudness of the sound

• The speed of the sound

• The direction of the sound

If the frequency of a sound wave increases, what happens to its pitch?

• The pitch gets lower

• The pitch gets higher

• The pitch stays the same

• The sound disappears

Which of the following best explains why you see lightning before you hear thunder?

• Light travels faster than sound

• Sound travels faster than light

• Thunder is produced after lightning

• The distance is too far for sound to travel

What is the term for the distance between two consecutive peaks or troughs in a wave?

• Amplitude

• Frequency

• Wavelength

• Wave speed

Letter B in the diagram is the wave

• amplitude

• peak

• trough

• wavelength

Tags

NGSS.MS-PS4-1

Higher frequency waves have higher energy

• true

• false

Tags

NGSS.MS-PS4-1

Use your understanding of how sound travels to explain why we can't hear sounds from space