10-3: Pressure

Question 1

Pressure in solid

Answer 1

Pressure is the force per unit area. It can be calculated as follows.

☀︎ Force =mass x gravity
☀︎ pressure= forces/area

Question 2

The SI unit of pressure

Answer 2

pascal (Pa)

1 Pascal= 1 N/m2

Question 3

The SI unit of force

Answer 3

newton

Question 4

The SI unit of area

Answer 4

m2 (meter squared)

Question 5

gravity

Answer 5

9.8 m/s2

Question 6

To increase the pressure exerted by a force over an area you can:

Answer 6

☀︎Increase the size of the force

☀︎Decrease the area which the force is acting

Question 7

Area and pressure

Answer 7

☀︎The greater the area over which the force acts, the less the pressure
☀︎The smaller the area over which the force acts, the greater the pressure

Question 8

liquid acts in all directions

Answer 8

☀︎The liquid pushes on every surface in contact with it, no matter which way the surface is facing.

☀︎At any depth in a fluid at rest, the pressure is the same in all directions at that given depth.

Question 9

Pressure increases with depth:

Answer 9

The deeper you go into a liquid , the greater the weight of the liquid above pushing down on the liquid and the higher the pressure

Question 10

pressure depends on the density of the liquid

Answer 10

The denser the liquid, the higher pressure at any particular depth.