The diagram shows four thermometers, labeled W, X, Y, and Z. The freezing and bo

Question

The diagram shows four thermometers, labeled W, X, Y, and Z. The freezing and boiling points of water are indicated. Rank the thermometers according to the size of a degree on their scales, smallest to largest.

W: fp = 0, bp = 100 (celcius)

X: fp = 45, bp = 125

Y: fp = 55, bp = 175

Z: fp = 35, bp = 75

In the picture, the freezing points and boiling points are separated by the same distance for each thermometer.

Ans: Z, X, W, Y

Please explain why. The phrasing "size of a degree" is tripping me up.

Explanation / Answer

size of a degree on scales of thermometer W-

bp - fp = 100 - 0 = 100 oC

size of a degree on scales of thermometer X-

125 - 45 = 80 oC

size of a degree on scales of thermometer Y-

175 - 55 = 120 oC

size of a degree on scales of thermometer Z-

75 - 35 = 40 oC

Ranking of thermometers according to size of degrees (smallest to largest),

Z(40) > X(80) > W(100) > Y(120)

Z < X < W < Y

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