Investigating Vibrating Materials Practice Test

Read the plan. What will Chen see and hear?

QUESTION: Do vibrating things make sound?

MATERIALS: ruler, desk

STEPS:

1. Put the ruler on the desk edge.

2. Hold the ruler, push down the end, let go.

3. Watch the ruler and listen.

OBSERVE: Does the ruler shake? Do you hear sound?

RESULT: The ruler moves up and down fast and buzzes.

Read the plan. What is Amir trying to find out?

QUESTION: Do vibrating things make sound?

MATERIALS: ruler, desk

STEPS:

1. Put the ruler on the desk edge.

2. Hold it, push down the end, let go.

3. Watch the ruler and listen.

OBSERVE: Does it shake? Do you hear sound?

RESULT: The ruler moves fast and makes a buzzing sound.