Question

1. Write an experiment to show that water pressure increases with depth.

2.Calculate the pressure exerted by a brick, which applies a force of 1.2 N, when

(a) It is placed upright on the soil

(b) When it is placed on its widest base. The dimensions of the brick are 2cmx4cmx10cm

3. Last year India was host to World Environment Day on 5th June and the theme was "Beat Plastic
pollution'. Is it right and feasible to completely stop using plastic? Also tell if there is any particul
type of plastic which is more harmful.

4. There is no dearth of Nz around us but we cannot absorb it directly from the atmosphere. Neither
live without it. Explain diagrammatically the stages through which N2 goes and finally enters our
ect Work

5.- Make a project on the topic "Conservation of Plants And Animals".
OR
Biodiversity defines the biological richness of an ecosystem. Biodiversity is important to the ec
as well as people living there. based on this design a project on biodiversity covering the topic
Importance of Biodiversity
Practices Which Are Threat To Biodiversity
Methods To Conserve Biodiversity
Role of IUCN.
Note: Holiday Home Work Given From Lesson 1, 2, 3 and 11.​

Answer 1

Answer:

Pressure and depth have a directly proportional relationship. This is due to the greater column of water that pushes down on an object submersed. Conversely, as objects are lifted, and the depth decreases, pressure is reduced. Obtain a cylinder with holes made at different levels from the top.