Learning Task I: Directions: Read the following statements carefully. Choose the letter of your answer.
Write on the space provided the letter of your answer.
____1. A(n) is caused by sound waves bouncing off an object.

echo
vibration
sound
crest

____2. Sound travels fastest through which of these materials?

Metal
Empty Space
Air
Water

____3. Sound waves cannot travel through .

a solid
gases
empty space
liquids

____4. Which is the BEST description of how sound is produced by someone playing a guitar?
The strings produce transverse waves of energy.
The strings transfer energy from the player's hands.
When the strings are plucked, air particles vibrate.
The player's fingers cause air particles to move across the room.
____5. A reflects sound best.

hard, smooth surface
rough, uneven surface
soft, white wall
very hot gas