Vibration, Waves & Sound

A regular back-and-forth motion through a balance point is called ...

The time needed to make one vibration is called ...

The number of vibrations per second is called ...

Sound waves are ... waves.

Sound that can be heard by humans has a frequency of ...

Sound cannot travel in a vacuum because ...

If the period of a vibration is 0.5 seconds, its frequency is ...

The relationship between period (T) and frequency (f) is ...

A wave whose vibration direction is perpendicular to its travel direction is called a ... wave.

A wave has a wavelength of 2 m and a frequency of 5 Hz. Its speed is ...

The formula for wave speed is ...

Sound with a frequency above 20,000 Hz is called ...

Reflected sound heard after the original sound ends is called ...

The event where an object vibrates because another object vibrates at the same frequency is called ...

A pendulum vibrates 60 times in 30 seconds. The frequency of the vibration is ...

A wave travels at 340 m/s with a frequency of 170 Hz. Its wavelength is ...

When shouting in front of a cliff, the echo is heard 1.5 seconds after the original sound. If sound travels at 340 m/s in air, the distance to the cliff is ...

Vibrations with a very low frequency that some animals such as crickets can hear are called ...

A ship sends sonar to the seabed and receives the reflection after 2 seconds. If sound travels at 1,500 m/s in water, the depth of the sea is ...

In a tuning fork and air column resonance experiment, the first resonance occurs when the air column length is ... the wavelength.