Have you ever jumped into a pond, well or a pool of water ? If you have, you would have experienced a strange thing that happens. When you are in the water, you feel lighter compared to when you are standing outside. Besides, when you try to push down any floating object ( Tennis ball, empty water bottle ) in a vessel filled with water, you feel the object pushing your hand up and on removing the hand, the object rises up to the surface of the water.
Description
Materials Required
For Task 1: Bucket (with water), empty plastic bottle or a container,
For Task 2, 3, 4, 5 and 6: (i) Bucket/Beaker (ii) Water, (iii) Spring balance (for weight) (iv) Same-sized small plastic containers with lid (v) Thread (vi) Small stones, (vii) Marbles viii) Clay (for Task 3) (ix) Objects of different shapes that will sink in the water (e.g. keys, magnets etc) (for Task 3) (x) Aluminium foil (for Task 5) (xi) Salt (for Task 6)
Download PDF in
Teachers' Version
Related Learning Units and Activities
