Year 9

Housekeeping Supplies

Housekeeping is a very important department within a hotel. The department is responsible for toiletries, linen and cleaning supplies, laundry and proper upkeep of the hotel.
This lesson is about:
– Introduction to the Housekeeping Department
– Different supplies used.
– Safety measures to be taken by the department.

Conduction

This lesson deals with the transfer of energy, such as heat or an electric charge, through a substance. In heat conduction, energy is transferred from molecule to molecule by direct contact; the molecules themselves do not necessarily change position, but simply vibrate more or less quickly against each other.

Convection

Convection currents occur when a heated fluid expands, becoming less dense, and rises. The fluid then cools and contracts , becomes more dense and then sinks.
Applications of convection currents in real life situations are discussed.