Page 14 - Science B.B Prim.4 concept 2&3 t.1 e-book _2024-2025. - Copy (1)_Neat

Humans cannot hear the high-pitched sound produced either

from bats or the special cane of blind people.

Special cane Bat

Similarities

- Both emit a high-pitched sound, which bounces off as an echo.
- Both receive the echo.

Difference

• Special cane picks up the echo and changes it into a vibration.
• Bat picks up the echo but it doesn’t change it into vibration.

First Term 36