Investigating Vibrating Materials Practice Test

Read the plan. What does this plan test?

QUESTION: Can we make sound by making things vibrate?

MATERIALS: triangle, stick

STEPS:

1. Hold the triangle by the string.

2. Tap it with the stick.

3. Watch and listen.

OBSERVE: Does it shake? What sound happens?

RESULT: The triangle shakes and rings until you grab it.

Read the plan. What will Yuki see and hear?

QUESTION: Can we make sound by making things vibrate?

MATERIALS: guitar, hand

STEPS:

1. Pluck a string.

2. Watch the string and listen.

3. Touch the string to stop it.

OBSERVE: How does it move? When does sound stop?

RESULT: The string moves and sounds until you stop it.