Physics Homework [Energy 5] Flashcards
11.3.25
Which letter on the heating curve represents the section that shows a solid increasing in temperature?
A
State units for power.
W (Watt)
State the effect on the temperature of a gas if the average kinetic energy of the particles increases.
Increases
Describe the cause of gas pressure.
Collisions of the gas particles with the walls of the container.
Describe the relationship between internal energy, total kinetic energy of the particles and total potential energy of the particles.
internal energy = total kinetic energy of the particles + total potential energy of the particles.
State the standard units for specific latent heat.
Joules per kilogram -> J/kg
State the three variables that need to be measure to establish the specific heat capacity of a substance.
Energy supplied to the substance, mass of the substance and temperature increase of the substance.
Define specific heat capacity.
The amount of energy needed to raise the temperature of 1kg of a substance by 1 degrees celcius.
State the standard units for work done.
Joules (J)
Explain the difference between boiling and evaportation.
Boiling happens at the boiling point when all of the substance changes state.
Evaporation happens below the boiling point.
Define specific latent heat of vaporisation.
The energy needed to change the state of a system from liquid to gas per kilogram.
State the standard units for energy.
Joules (J)
Which letter on the heating curve represents the section that shows melting?
E
State the two things that can occur when a substance is cooled.
The temperature can decrease of the state can change.
Define specific latent heat of fusion.
The energy needed to change the state of a system from solid to liquid per kilogram.
Name the eight stores of energy.
Chemical, electrostatic, magnetic, elastic potential, nuclear, thermal, kinetic, gravitational potential.
Which letter on the heating curve represents the section that shows boiling?
D
Name the four transfers of energy.
Heating, Electric, Radiation, Mechanical
In which state of matter is the internal energy highest?
Gas
Define rate.
How much a variable changes over time.
