1. Give the formula for calculating power in Physics:
Y8 – TERM 3 REVISION
Describe the difference between heat and temperature:
Explain how conduction transfers energy from one place to another:
Give the formula for calculating specific heat capacity in Physics:
Describe and explain factors which affect the rate of evaporation:
What is meant by the term „absolute zero“?
Convert:
67 ⁰C to Kelvin:
278 K to Celsius:
683 ⁰C to Kelvin:
168 K to Celsius
Explain how evaporation causes a cooling effect:
Give the formula for calculating pressure in Physics:

2. A spinning bicycle wheel needs to be brought to a stop by a rubber brake block. Assuming the wheel has 500 J of kinetic energy that is all absorbed by the brake and that the mass of the block is 25 g, how much will the temperature of the block rise by in °C? SHC Rubber; 2000 J/kg °C
Explain what thermal radiation is:
Draw a Sankey diagram for a light bulb:
Explain why conduction and convection cannot occur in a vacuum:
Explain how the type of surface affects the amount of energy given out by thermal radiation:
Explain what is meant by an „anomalous“ result:
A box weighing 15 N is placed on a table. The surface area in contact with the table is 2.5 m2. Calculate the pressure:
Explain how convection transfers energy from one place to another: