Physics
Grade-9
Easy
Question
Olive oil is cooled in the freezer. What happens to the kinetic energy of its particles? What does it lead to?
- Increases, increase in volume
- Decreases, decrease in volume
- Increases, decrease in volume
- Decreases, increase in volume
Hint:
As the temperature decreases particles slow down and get closer together
The correct answer is: Decreases, decrease in volume
- Thermal contraction is a decrease in a material's volume when its temperature decreases. As the temperature decreases, the average kinetic energy of the particles decreases and they slow down and get closer together thereby decreasing the volume of the material.
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