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The video explains the concept of wave cycles, focusing on the wavelengths of visible light and sound. Visible light wavelengths are in the range of hundreds of nanometers, while sound wavelengths audible to humans range from a few centimeters to nearly 20 meters.

What is a wavelength in the context of waves?

• The frequency of a wave

• The speed of a wave

• The length of a complete cycle of a wave

• The height of a wave

How long are the wavelengths of visible light typically?

• A few millimeters

• A few meters

• A few kilometers

• A few hundred nanometers

In what unit are visible light wavelengths typically measured?

• Meters

• Centimeters

• Nanometers

• Kilometers

What is the range of wavelengths for sound in the air that humans can hear?

• From a few millimeters to a few centimeters

• From a few centimeters to almost 20 meters

• From a few nanometers to a few micrometers

• From a few meters to a few kilometers

Which of the following is true about the wavelengths of sound audible to humans?

• They are shorter than visible light wavelengths

• They are longer than radio waves

• They range from a few centimeters to almost 20 meters

• They are measured in nanometers