Lesson 3: I'm All Ears!

1. Dogs can hear higher Pitches than humans.

• True
• False

2. Sound moves faster in air that is 90 degrees Fahrenheit than in air that is 32 degrees Fahrenheit.

• True
• False

3. A large amount of energy reaching your eardrum sounds soft.

• True
• False

4. Sound travels faster through a wooden desk than through air.

• True
• False

5. Sound measuring 140 decibels or higher can hurt your ears.

• True
• False

6. Sound waves with a low frequency have a higher pitch.

• True
• False

7. Airplanes cannot fly faster than sound.

• True
• False

8. Sound travels at different speeds through different materials.

• True
• False

9. A small amount of energy reaching your eardrum makes a loud sound.

• True
• False

10. Humans can hear all sounds.

• True
• False