No doubt you already have a good idea of what temperature is. You might say that it’s how warm or cool something feels. In physics, temperature is defined as the average kinetic energy of the particles of matter. When particles of matter move more quickly, they have more kinetic energy, so their temperature is higher. With a higher temperature, matter feels warmer. When particles move more slowly, they have less kinetic energy on average, so their temperature is lower. With a lower temperature, matter feels cooler.
Aiden is studying the concept of temperature in his high school physics class. He has two glasses of liquid that are different temperatures and needs to determine the physical differences that exist in each glass. Glass A contains a cold liquid and Glass B contains a hot liquid.
If the liquid in Glass A is heated, will the kinetic energy increase or decrease?