# MATH: Scientists use the Kelvin temperature scale to keep track of some of the coldest things in the universe.?

The Kelvin temperature scale begins at 0 Kelvin (K), which is

called absolute zero. At absolute zero all motion stops, so nothing can ever be

colder than 0 Kelvin. The following values compares the Celsius (˚C) and

Kelvin temperature scales.^1

Temperature

(K) 0, 50, 100, 150, 200, 250

Temperature

(C) -273, -223, -173, -123, -73, -23

1. The temperature of liquid nitrogen is 77 K. Use the graph to estimate what the

temperature of liquid nitrogen is in degrees Celsius. Clearly show your method

on the graph.

2. Use extrapolation to determine what the approximate temperature of 0C would

be in Kelvin. Clearly show your method on the graph.

### 1 Answer

Relevance

- MathmomLv 74 years agoFavorite Answer
This is a linear relationship:

C = K − 273

K = C + 273

1. 77°K = 77−273 = −196°C

2. 0°C = 0+273 = 273°K

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