Pressure

Question 1

Describe the movement of the particles of helium gas inside the balloon

Answer 1

The particles of the helium gas move at range speeds in different directions

Question 2

What name is given to the total kinetic energy and potential energy of all the particles of helium gas in the balloon

Answer 2

Internal energy

Question 3

Density equation

Answer 3

Density=mass/volume

Question 4

Unit of density

Answer 4

Kg/m3

Question 5

The further the swimmer dives below the surface of the sea, the greater the pressure on the swimmer?why

Answer 5

As the swimmer dives deeper. He increases mass/volume/height of the water column above himself

Question 6

Pressure unit

Answer 6

Pascal(pa)

Question 7

If the tap was placed higher up on the water butt, what difference would it make to the rate of flow of water from the tap?

Answer 7

rate of flow of water less
because pressure is less

Question 8

What conclusions can you make based on the results in the table above?

Answer 8

At shorter lengths water collected is the same
at longer lengths water collected decreases as the length of pipe increases

Question 9

Suggest further readings that should be taken to improve the investigation

Answer 9

take more readings to calculate a mean (1)
take more readings is insufficient
to reduce effect of random errors (1)
or
take more readings between 5.0 m and 10.0 m (1)
see where the change occurs (1)

Question 10

Calculate the pressure of the water on the bottom of the bottle and give the unit.

Answer 10

3000

Question 11

Suggest one problem that might arise from trying to collect data from a fifth hole with a vertical height of 1 cm above the sink.

Answer 11

Water will dribble down which is very close to the bottle