Reflection on Heat Expansion and Contraction

Write down 3 things that you have learnt about heat expansion and contraction.

AND

Rate your understanding of the concept by writing 1,2,3 or 4.

1- Understand very well

2- Understand well

3- Understand

4- Do not understand

Write your comments by clicking on the comments tag below.

Metal Rod Expansion (Video)

Dear Pupils,

Watch this video on metal rod expansion and post any questions that you may have in the comments tag below.

E-learning Homework (Problem 2)

Watch the video below.

Farris managed to revert the ping pong ball to its original shape. Let's watch how he did it.

Explain what happened when hot water was poured over the ping pong ball. You can make use of the rubrics below to guide you.

(Post your answer in the comment box below.)

Solution Video for Problem 1

Dear Pupils.

You can watch the Solution Video for Problem 1 at your own free time. Feel free to comment by clicking on the comments tag below.

Effects of Heat Gain and Heat Loss

Heat gain and heat loss constantly occur around us. Expansion and contraction are some effects of heat gain and heat loss in our daily lives. The results can be harmful if we do not ensure that the expansion and contraction can take place safely.

Have you ever noticed this?

 

The metal railway tracks expand when they become hot. The gaps in-between the railway tracks allow space for expansion. This is to prevent the rail from bending when it expands.