Weather Instuments

Question 1

Min max thermometer (*C)

Answer 1

U shaped tube filled with mercury. At the top there is a bulb of alcohol. Current, max and min temp. can be found.
Current temp.- level of mercury

Question 2

Rain gauge (mm)

Answer 2

Located in an open area, away from buildings etc. Put of grass to avoid splash back. (Not in Stevenson screen)

Question 3

Hygrometer (%)

Answer 3

Two readings- wet bulb and dry bulb. Find difference in the readings. Go onto table, read the difference column and dry bulb value on a humidity chart.