FPSC Everyday Science MCQs

Conduction transfers thermal energy through particle interactions.
It is especially important in solids.

Convection occurs when warmer fluid moves and cooler fluid replaces it.
It happens in liquids and gases.

Thermal radiation travels as electromagnetic waves.
It does not require a material medium.

Space between the Sun and Earth is nearly a vacuum.
Solar energy reaches Earth as electromagnetic radiation.

Wood and many plastics conduct heat poorly.
They reduce heat transfer to the user's hand.

Metals transfer heat efficiently from the flame to food.
This makes cooking faster and more even.

Both spoons may have the same temperature.
Metal removes heat from the skin more quickly, creating a colder sensation.

Kinetic energy is the energy of motion.
It depends on the object's mass and speed.

The fan's motor converts electrical energy into rotation.
Some energy is also lost as heat and sound.

Chemical reactions inside a battery create an electric potential.
The stored chemical energy is converted into electrical energy.

Solar cells use the photovoltaic effect.
They convert light directly into electrical energy.

A microphone detects sound vibrations.
It converts them into corresponding electrical signals.