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What is sound?

• Vibrations caused in the vacuum of space

• Vibrations of matter

• A transverse wave

• A type of electromagnetic wave

The measure of how high or low a sound is:

• The intensity

• The size of the wavelength

• How loud or soft a sound is

• The pitch

What makes sound happen?

• Waves
• Vibrations
• Frequency
• Amplitude

What is the highness and lowness of sound?

• Vibration
• Pitch
• Frequency
• Wavelength

Which of these tells us how loud or soft a sound is?

• Volume

• Pitch

• Frequency

• Trough

Birds chirping would be a _________________ sound.

• low pitch

• high pitch

• low frequency

• tall amplitude

Nails on a chalkboard would have

• a low pitch

• a high pitch

• a low frequency

What behavior of light is shown in the picture?

• Reflection

• Refraction

What behavior of light is shown in the picture?

• Reflection

• Refraction

What behavior of light is shown in the picture?

• Reflection

• Refraction