Force of Buoyancy and Archimedes Principle

Define hydrostatic pressure.

Buoyant force exerted by different fluids on a given body is :

Complete the below-given table.

When does a thing float on water?

Write the name of three things that float on water.

Write the name of three things that sink into water.

What does not sink into water?

Mubashira is experimenting by putting a block of wood in water. You can see the block of wood floating. Do all substances float on water like this? 
 

A raft does not sink in water. Why?

Put some small objects in the water. Write what happened to those objects.

Immerse a wooden plank into a beaker containing water. Write about what have you noticed.

Make a table in your notebook and write the names of ten things for each of the following- things that dissolve in water, float in water, and sink in water.

Write the information you obtained from the floating-sinking experiment, in the table below.

Repeat the experiment with other things besides those mentioned in the lesson. Write their names, too, in the proper places in the table.

An eraser floats in water.

Though a ship is heavier than an iron ball, it floats on water while the iron ball sinks. Why does this happen?

Why does a block of plastic released underwater come up to the surface of water?

In what direction does the buoyant force on an object immersed in a liquid act?

You find your mass to be $42 \mathrm{kg}$ on a weighing machine. Is your mass more or less than $42 \mathrm{kg}$?

Why does a body float or sink when placed on the surface of the water?

What do you mean by buoyancy?