What is absolute zero?
A
the temperature at which water freezes
B
the lowest temperature ever reached on Earth
C
the highest temperature an object or substance can reach before boiling
D
the temperature an object would be if its molecules were completely still
D
the temperature an object would be if its molecules were completely still
Absolute zero is the theoretical temperature at which particles have minimal motion and all thermal energy is absent. It is equivalent to 0 Kelvin, or -273.15 degrees Celsius.