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.

The solved crossword puzzle is given below: