Question

Explain atmospheric pressure with the help of an activity by using rubber​

Answer 1

Explanation:

When we press the rubber on a flat ,smooth, surface , its concave rubber cup gets flattened to a large extent, pushing out most of the air from beneath it. Since very little air remains inside the flattened rubber ,therefore the air pressure inside the rubber becomes very low.

Answer 2

Answer:

Aim:

•  To indicate the presence of atmospheric pressure

Apparatus Required:

• two old-fashioned rubber-and-wood-stick plungers.

Procedure:

1. Stick the two plungers together. You might need to get the rims wet first.
2. Try separating them.

Observation:

• Completing the separation is much harder.
• When you rammed the two plungers together, you forced out the air from the cavity that the insides made when they were pushed together.
• This air being forced out caused the air pressure inside to be much lower than that outside.

Inference:

• This indicates the presence of atmospheric pressure
• As higher air pressure always pushes, it kept the two plungers together.