Convert 5°F to the Celsius scale.

Convert 40°C to the:

(a) Fahrenheit scale

(b) Kelvin scale

Read the clues across and clues downwards and fill up the blank squares.

Across :

1. Transfer of heat is always vertically upwards in …………… .
2. The S.I. unit of heat …………… .
3. We get heat from the sun by …………… .
4. Liquids when heated …………… more than solids.
5. …………… are bad conductors of heat.

Down :

2. A thermometer is used to measure …………… .
3. …………… is a form of energy which we can feel.

One end of a steel girder in a bridge is not fixed, but is kept on rollers. Give the reason.