About this worksheet
A line graph on page 1 of this 5th grade science sheet plots air temperature against height from 0 to 100 km. Dashed lines mark 12, 50 and 85 km, and the troposphere, stratosphere, mesosphere and thermosphere are named at the right. Students read the temperature at the ground and at 12 km, name the layer where it rises between 20 and 50 km, and find the coldest point. Page 2 asks why the layers split at 12, 50 and 85 km and why the stratosphere warms. The key gives 15ยฐC, -55ยฐC and -90ยฐC at about 85 km.


