Question

On the coldest night in Oymayakon, Russia, the temperature dropped from 0°C to −20°C in 5 hours. What is the average temperature change per hour? Enter your answer in the box.

Answer 1

average change per hour=(total change)/(time elapsed in hours)

total change is rom 0 to -20 or -20

hours=5

o average change is
`(-20^oC)/(5hr)=-4 (^oC)/(hr)`

Answer 2

it dropped from 0 to -20

-20 -0 = -20

divide by the time of 5 hours

-20/5

-4 degrees per hour