It is a form of heat transfer that requires direct contact between two objects with different temperatures for the heat or thermal energy to flow. What is it?

• radiation

• convection

• condensation

• conduction

What is the kind of heat transfer that does not require matter but carries heat energy through electromagnetic waves?

• conduction

• convection

• condensation

• radiation

All of the following are advantageous examples of radiation EXCEPT _____.

• The radiant energy can help your skin to create or synthesize Vitamin D.

• The extreme heat from the Sun causes food spoilage.

• The sunlight helps plants to produce oxygen and glucose through the process called photosynthesis.

• A radiant warmer is a device that uses radiant heat to keep a baby's body temperature stable.

All of the following are disadvantageous examples of convection EXCEPT _____.

• In certain situations like open windows, convection can lead to quick heat loss from a room as warm air rapidly rises and is replaced by cooler air.

• The movement of air currents can carry pollutants and allergens over long distances.

• During winter, a layer of warm air above traps cool air and pollution close to the ground.

• It enables the movement of air throughout the globe ensuring a balanced weather and climate patterns.

This is the type of heat transfer that occurs in fluids like water and gases. What is it?

• convection

• conduction

• condensation

• radiation