Beats

Performing jumping jacks will ___________ your pulse and respiratory rate.

• speed up

• slow down

Is the contraction of the heart muscle as it pumps blood.

• pulse

• heartbeat

• pressure

Your heart beats about ___________ times a minute.

How many beats is this note?

• 4

• 3

• 2

• 1

How many beats is this?

• 3

• 4

• 6

• 8

How many beats are in a half rest?

• 1

• 2

• 4

• 3

What is the phenomenon of 'beats' in sound waves?

• Interference of two waves of slightly different frequencies

• Reflection of sound waves

• Diffraction of sound waves

• Absorption of sound waves

Tags

NGSS.HS-PS4-1

When two sound waves of frequencies 256 Hz and 260 Hz are played together, what is the beat frequency?

• 2 Hz

• 4 Hz

• 8 Hz

• 16 Hz

Which of the following is a real-world application of the beat phenomenon?

• Tuning musical instruments

• Measuring temperature

• Calculating speed

• Determining mass

In an experiment, two tuning forks are struck simultaneously. One has a frequency of 340 Hz and the other 344 Hz. What is the beat frequency heard?

• 2 Hz

• 4 Hz

• 6 Hz

• 8 Hz