Cooling Systems

The video explores the evolution of heating and cooling methods, highlighting the importance of heat for survival and the relatively recent development of cooling technologies. It explains how refrigerators and air conditioners work, focusing on the role of refrigerants and the process of heat absorption and release. These technologies have revolutionized food preservation and climate control in homes.

Explain how a refrigerator works to keep food cool.

What are some traditional methods people used to keep food cool before the invention of refrigerators?

What role does refrigerant play in both refrigerators and air conditioners?

Describe the process by which an air conditioner cools the air inside a home.

How have cooling systems changed the way people store food?