Form 1 Physics Mid-Term Quiz

An electric kettle with a shiny outer surface is more efficient than one dull outer surface. Give a reason for this.

State two examples of good conductors of heat.

Sauce pans have plastic or wooden handles. It is observed that in the morning, the pan feels colder than the handle. Explain the difference in this observation.

In the set-up below, it is observed that the level of water initially falls before starting to rise when the flask is heated. Explain this observation.

The diagram below shows the effect of heat from a flame on two surfaces. How does the heat from the flame reach the metal surfaces?

State what is observed from the set-up after a few minutes.

The figure below shows a cross-section of a vacuum flask. Name the parts labelled A and B.

Explain how heat losses are minimized when a hot liquid is poured into the flask.

Explain how ventilation holes in a house helps in the flow of fresh air.

Distinguish between luminous and non-luminous sources of light, giving an example in each case.