Real-life Application Science Question - Invisible Water Vapour

Parents can pose the following question to the kiddos.

Question:
Water vapour is not visible. How do we show that water vapour is in the surrounding air?

Approach:
The P5 kiddos  have learnt about water and its three states hence one easy way to prove that water vapour is all around them is to place a bottle of cold water or a can of cold drink on the table. After some time, water droplets will form on the outer surface of the cold bottle or cold can.

Science Concept and Keywords:
When the warmer water vapour in the surrounding air comes into contact with the cooler outer surface of the bottle/can, the warmer water vapour loses heat to the cooler outer surface of the bottle/can and condenses to form water droplets.

A Peek into Our Teaching Approach:
We believe in making learning easier for the kiddos. Hence we introduce our kiddos to template answers to certain questions. Template answers contain keywords that the PSLE markers are looking out for.

Respiratory System - Sample Question and Answer

Why do we breathe faster when we exercise?

When we exercise, our body needs more energy. We breathe faster to take in more oxygen at a faster rate so that our body cells can carry out cellular respiration faster to release more energy.
When we exercise, our body cells also produce more carbon dioxide. We breathe faster to exhale this greater amount of carbon dioxide faster.