Chapter U3.2, Problem 2E

Interpretation Introduction

Interpretation : The reason for rainfall to be measured in centimeters or inches and not in milliliters or cubic centimeters needs to be explained.

Concept Introduction :

Rain gauge is a meteorological instrument used to measure rainfall in a particular place over a period of time.

Answer to Problem 2E

Rainfall in a particular place is equal to the height of water level raised in the rain gauge instrument.

Units of height are either centimeters or inches.

Explanation of Solution

Rain gauge is a meteorological instrument used to measure rainfall in a particular place over a period of time.

Rain gauge has a funnel type device attached to a cylindrical tube to which measuring scale is attached.

When it rains, rain water falls in the funnel type of device and it goes to the measuring tube.

Rainfall in a particular place is equal to the height of water level raised in the measuring tube.

Volume of a liquid is directly proportional to the height of the cylindrical container.

As the volume of rain increases outside, then its volume increases even in the rain gauge also then, the height of the liquid level also increases simultaneously.

So, the rainfall is measured in height or length units they are either centimeters or inches whereas, milliliters or cubic centimeters are the units of volume.

Conclusion

Rainfall in a particular place is measured in centimeters or inches.