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The diagram below shows a weather measuring instrument. Use it to answer the questions below.

The diagram below shows a weather measuring instrument. Use it to answer the questions below.

metal.png

(i) Name the parts marked M and N.

(ii) Describe how the instrument works

Answers


Martin
i)
M - Sensitized card
N - Cylindrical glass lens

ii)
- The glass sphere focusses the sun’s rays on a sensitized card which is graduated in hours and minutes.

-The heat burns the paper/card as the sun moves across the sky.

- The unburnt sections in the card indicates when there was cloud cover.

- At the end of the day, the card is removed and the number of hours that the sun shined are obtained by adding the burnt sections on the card.


marto answered the question on September 26, 2019 at 07:57

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