Question

sink
II
float
Fig. 3: Sinking and floating depends on upward force of water
1. Work in groups and immerse these objects in a bucket of water one by one,
Observe whether they float or sink.
coin
soap
paper
leaf
board pin
plastic bottle
stone
F 8
2. Why do some things float in water while others sink?
3. Name 2 things each that float and sink in water.
1. Why do you think a large piece of wood floats on water but a small metal coin sinks?
isplace: move something from its place or usual position
Properties of Water | Block 8 Grade 4 39
uture​

Answer 1

Answer:

objects float when their density is less than water.

Objects tend to sink when their density is greater than water

Answer 2

With the Following statements it will be easy for you to solve the question (buoyant force=The upward force acting on the object in water or other fluid or gas is called buoyant force)

Explanation:

1. The object floats if the buoyant force is larger then it's weight.

2. The object sinks if buoyant force is smaller than it's weight

3. The object floats inside the liquid if the buoyant force is equal to it's weight

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