PMA Practice - Qtr 2

Front

What is a Non-contact Force?

Back

A force that can act on an object without physical contact, such as gravitational force or magnetic force.

Front

What is Radiation in terms of heat transfer?

Back

The transfer of heat in the form of electromagnetic waves, such as heat from the sun or heat lamps.

Front

What is Convection?

Back

A method of heat transfer that involves the movement of fluids (liquids or gases) where warmer areas of a liquid or gas rise and cooler areas sink.

Front

What is the principle of heat transfer?

Back

Heat always flows from a hotter substance to a colder substance.

Front

What is a Balanced Force?

Back

Forces that are equal in size but opposite in direction, resulting in no change in motion.

Front

What is an Unbalanced Force?

Back

Forces that are not equal and can cause an object to start moving, stop moving, or change direction.

Front

What is the Net Force?

Back

The overall force acting on an object when all the individual forces are combined.

Front

What is Conduction?

Back

The transfer of heat through direct contact between materials, such as a metal spoon in a hot pot.

Front

What is an example of a Non-contact Force?

Back

Gravity, which pulls objects toward the Earth without touching them.

Front

What happens to warm air in a room?

Back

Warm air rises due to convection, while cooler air sinks.