Question

The rain gauge is kept on a platform ____ above the level of the ground to prevent the splashing of rain water.
A. 20 cm
B. 30 cm
C. 40 cm
D. 50 cm

Answer 1

Hint:1) It is a simple instrument anyone can install and use. Basically it looks like Transparent cylinder with markings.
2) Rain measures don't work in typhoons. Water can't gather in the estimation tubes if the breeze is excessively solid.

Complete answer:
Rain gauges are used to measure the amount of rain in a specific area over a set amount of time. They can be simple or complex, and they do not measure frozen precipitation.
Downpour check can precisely gauge the precipitation with no misfortune because of vanishing. It is an instrument utilized for deciding the profundity of precipitation that happens over a unit zone. In this way, it estimates precipitation. One liter of precipitation for every meter squared is comparable to one millimetre of estimated precipitation.
A piped opening of 150-170 cm is found in standard downpour measures. They are planned as a straightforward aloof gatherer. A graduated estimating glass is utilized for deciding the measure of precipitation.For the estimation of precipitation, the downpour cloth should be put 30 cm over the ground to forestall the sprinkling of water.

20 cm is not the right answer. Option(A) is not the correct option.
It is 30 cm placed above the level of ground to prevent splashing.Therefore, Option (B) is the correct option
40cm is not the right answer. Option (C) is not the correct option.
The height is not kept around 50 cm. so, Option (D) is not the correct answer.

Hence, the correct answer is option B.

Note:1) Run water from a hose toward the finish of each downspout on your home, and watch the heading the water runs. Plan your downpour garden for the segments.
2) Lay out bended edges around the dump with string. On the off chance that, for instance, you plan a kidney-formed nursery, find its internal bending side toward the house or asphalt so water follows the bend into, instead of around, your downpour garden.