Understanding Sound Waves and Loudness | Grade 5

What makes a sound wave carry more or less energy?

• The speed of the wind

• The difference in pressure areas

• The temperature of the air

• The color of the medium

How do our ears change sound waves into signals our brain can understand?

• They store sound energy

• They reflect sound waves

• They convert vibrations into nerve signals

• They amplify sound waves

How does the shape of our ear help us hear some sounds better than others?

• Due to the density of air

• Due to the structure of our vocal cords

• Because of the frequencies of human voices

• Because of the shape of our ears

What does the decibel scale (a measurement of sound strength) tell us about sound?

• The intensity of sound waves

• The speed of sound

• The frequency of sound

• The loudness of sound

What happens when a sound wave gets as loud as it possibly can?

• It turns into a shockwave

• It becomes silent

• It slows down

• It changes color