Page 163 - SK Year 5 Science DLP

LET’S TEST
LET’S TEST EXPANSION AND
EXPANSION AND
CONTRACTION OF
CONTRACTION OF

ACTIVITY 1 MATERIALS
MATERIALS

AIM To observe the effect of heat on a metal ball.

Metal ball and metal ring set, Bunsen burner,
APPARATUS AND
MATERIALS lighter, glass container, test tube holder,
and water.

STEPS

1. Insert the metal ball 2. Light the Bunsen burner 3. Insert the metal ball
through the ring and and heat the metal ball through the ring again
observe it. for three minutes. and observe it.

Step Observation Inference
Step 1

Step 3

Step 5

4. Put the metal ball into 5. Insert the metal ball 6. Record the
the glass container through the ring again observations and
filled with water. and observe it. inferences in the table
as shown above.
7. Discuss your group’s observation
in front of the class. 1. Be careful when handling the Bunsen burner.
2. Use the test tube holder when handling the
hot metal ball.

What can you conclude when the metal ball is heated and cooled?

155
155
6.1.5, 6.1.7