Topic 7 Pressure

Question 1

Pressure

Answer 1

The force acting perpendicular to a certain surface area.

Question 2

Kilopascal or KPa

Answer 2

One KPa is equal to 1000 Pa

Question 3

Pascal or Pa

Answer 3

unit for pressure

Question 4

formula for pressure

Answer 4

The formula for pressure is P= F/a or pressure equals force divided by area

Question 5

Compression of gas

Answer 5

Gasses are compressible because their particles are so far apart that they can be squeezed together. an example of this is an airbag being compressed when a person hits it.
compression of gas is made possible by 3 things
1. must be enclosed
2. distribute themselves equally among the container
3. the space between the particles is what makes it possible.

Question 6

compression of liquids

Answer 6

while gasses are compressible liquids are incompressible because their particles are not spread out enough. when they have external force applied to them the liquid transmits the energy.

Question 7

measuring air pressure

Answer 7

a barometer is used to measure air pressure