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WorksheetsOCR Pressure and Matter Revision
Total questions: 25
Worksheet time: 14mins
Liquid pressure is because of the forces between the liquid particles and the _________ of the container.
Volume
Mass
Surface
Density
The pressure exerted by a liquid
increases with depth.
decreases with depth.
is constant
first increases and then decreases.
The pressure of the water at the bottom of a pond is ___ at the surface of the pond.
either lower or higher
higher than
same
lower than
Which of the following does not affect the pressure beneath the surface of a liquid?
Strength of the gravitational field
Area of the liquid surface
Density of the liquid
Depth of the liquid
pressure acts on all direction
true
false
What is happening at point D?
The iron has disappeared
The iron has stopped melting
The iron is getting colder
The iron is starting to boil
What is the equation that links density (ρ), mass (m) and volume (V)?
Density = Volume x Mass, or ρ=Vm
Density = Mass / Volume, or ρ=m/V
Density = Volume / Mass, or ρ=V/m
The internal energy of a substance is made up of these two parts:
elastic energy and potential energy
internal energy and vibration energy
potential energy and kinetic energy
kinetic energy and elastic energy
When we increase the kinetic energy of particles we also increase their .............?
mass
temperature
size
area
When a substance is getting hotter, which internal energy store is increasing?
gravitational
potential
kinetic
elastic
When we melt a substance we transfer energy to the substance to break the .................... between the particles.
bombs
moulds
wounds
bonds
The temperature at which a substance changes state from a solid to a liquid is called the ...............?
melting point
boiling point
evaporation point
turning point
What state is iron in between C and D?
solid
liquid
gas
plasma
What is the specific latent heat of vaporisation?
The energy required to change the state of 1kg of a material from liquid to gas, without a change in temperature
The energy required to change the state of 1kg of a material from gas to liquid, without a change in temperature
The energy required to change the temperature of 1kg of a material by 1⁰C, without a change in state
The energy required to change the temperature of a material without changing the state
Why doesn't temperature change during melting?
Energy is transferred to weaken the forces between particles
Energy is transferred the strengthen the forces between particles
Energy is dissipated to the surroundings
Energy is dissipated, heating up the object holding the solid material
What is the pressure at point X?
Density = 1000 kgm-3
29.43 Pa
6.87 Pa
22.56 Pa
23.45 Pa
Calculate the pressure exerted by the water on the fish.
[Density of water = 1 000 kg m−3 and g = 10N/kg]
5 × 104 Pa
5 × 107 Pa
5 × 106 Pa
5 × 10-1 Pa
Given that the pressure of sea water at the bottom of an ocean is 7.65 × 107 N m−2, calculate the depth of the ocean.
[Density of sea water = 1.02 × 103 kg m−3 and g = 10N/kg]
7.5 × 108 m
7.5 × 104 m
7.5 × 103 m
7.5 × 102 m
The pressure due to water at the base of a pond is measured as 50 kPa. What is the depth of the pond?
[density of water is 1,000 kg m-3]
10 meter
12 meter
8 meter
5 meter
Diagram shows the design of a dam. Why does the thickness of the dam increase with its depth?
The design of this structure is stronger.
Water pressure increases with depth.
The cost of construction is lower.
Water pressure acts uniformly in all directions.
A cardboard box weighs 30N. If we added weight to the box, what would happen to the pressure?
increase
decrease
stay the same
An office safe has a weight of 500N. If the area of the base is 1.25m2, what is the pressure on the floor? (Just write the answer, do not add the units, Pa)
(a)
