Monsoon in India: Definition, Types - Orchids
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Monsoon in India

Monsoons in India are different in type depending upon the location. The monsoon in the northeast is not the same as in the southwest. Students will learn about monsoon meaning, average rainfall, rainfall intensity, etc. That also connect students with the mathematics concepts of volume, circle graphs, bar graph, and numbers.

Monsoon Meaning:


India is a vast country which experiences a different climate in different regions. There are four distinct seasons in India, namely:

  • Winter Season
  • Summer Season
  • Monsoon Season
  • Post-monsoon season.

The Monsoon in India starts in June and lasts till September.

What Is Monsoon?


The monsoon refers to the rainy the phase of a seasonally changing

monsoon in India

pattern. Therefore, it is also called Rainy Season or monsoon in India.

The distribution of rainfall is different in different regions. Some regions receive very high rainfall, while others receive very scanty rainfall.

The difference between India's highest and lowest recorded monsoon rainfall is approximately 1178 cm.

Average Rainfall:


The average rainfall is the average amount of rain received in a year. The formula to calculate the average rainfall is:

average rainfall

The Volume of Rainfall Formula:


The amount of rainfall received is known as the volume of the rain.
The formula to calculate the importance of the rainfall collected is:

volume of rainfall formula

Rainfall Intensity:


Rainfall Intensity is the ratio of the total amount of rainwater during the given period to the duration of time of that period.

Rainfall Intensity Formula:


rainfall intensity formula

Volume Questions for Class 5

Question 1:

Suppose a Man Collected the Rainwater in a Rectangular Container of Length 12 cm and Width 15 cm. If the Depth of the Rainfall Was 0.5 m. Calculate the Volume of the Rainwater Collected on the Container.

Answer 1:

Step 1:

The formula to calculate the area of the rectangle is
Area = Length × Width.
Substitute 12 cm for length and 15 cm for width in the formula and then multiply to get the area.
Area of the container = 12 cm × 15 cm
= 180 sq. cm.

Step 2:

The depth of the rainfall = 0.5 m
The relation between centimetre and meter is 1 m = 100 cm.
Multiply 0.5 m by 100 to convert it to the equivalent centimetres.
0.5 × 100 = 50 cm.

Step 3:

The formula to calculate the volume of the rainfall is:
Volume = Area × Depth of the rainfall
= 180 sq. Cm × 50 Cm
= 9000 cu. Cm.
Therefore, the volume of the rainwater collected is 9,000 cu. Cm.

Question 2:

Ritu Collected 105 cu. M of Rainwater in an Area of 50,000 sq. Cm Container. Calculate the Depth of the Rainfall.

Answer 2:

Step 1:

The area and volume are in different units. Therefore, we will first
convert the unit of the area to square m. We know that 1 m = 100 cm.
Therefore, to convert sq. cm to sq. m, we divide it by 10000.
Divide 50,000 by 10000 to convert 50,000 sq. cm to the equivalent sq. m.
50,000 ÷ 10000 = 5
Therefore, 50000 sq. cm = 5 sq. m.

Step 2:

The formula to calculate the volume of the rainwater is:
Volume = Area × Depth of the rainfall
From it follows that:

Depth of the rainfall =
Volume / Area

Substitute 105cu. m for volume and 5sq. m for Area in the formula and then divide to get the depth of the rainfall.

Depth of the rainfall =
105cu.m / 5sq.m
= 21m

Circle Graph Questions for Class 5

Question 3:

Suppose That in a Place, It Rains Every Day for a Week. The Amount of Rainfall for Each Day Is Shown in the Table Below. Calculate the Average Rainfall of the Week.

Also, Draw a Pie Chart to Represent the Given Data.

data table

Answer 3:

Step 1:

Add the rainfall of each day to get the total amount of rain.
12.0 + 11.5 + 34.6 + 20.5 + 14.4 + 23.7 + 9.3 = 126

Step 2:

There are 7 days a week.
Divide 126 by 7 to get the average rainfall.
126 ÷ 7 = 18
Therefore, the average rainfall of the week is 18.

Step 3:

The pie chart of the given data is shown below:

Pie chart

Number Operation

Question 4:

Rina Observed That in a Shower, 180 cm of Rain Falls in 15 Minutes. Calculate the Intensity of the Shower in mm per Second.

Answer 4:

Step 1:

We need to calculate the intensity of the shower in mm per second.
Therefore, we will convert 180 cm to mm and 15 minutes to seconds.
We know 1 cm = 10 mm. Multiply 180 by 10 to convert 12 cm to an equivalent mm.
180 × 10 = 1,800 mm
Therefore, 180 cm = 1,800 mm

Step 2:

We know that 1 minute = 60 seconds.
Multiply 15 by 60 to convert 15 minutes to equivalent seconds.
15 × 60 = 900
Therefore, 15 minutes = 900 seconds

Step 3:

The formula to calculate the intensity of the water is:

Intensity=
Depth of water / Time

1800 / 900
=2

Therefore, the intensity of the shower is 2 mm per second.

Question 5:

Suppose the Average Rainfall of Jalpaiguri Is 2674 mm. What Is the Total Rainfall (in M) Received in Jalpaiguri in a Year?

Answer 5:

Step 1:

The formula to calculate the average rainfall is:

Average rainfall=
Total rainfall in a year / 12

Therefore, the formula to calculate the total rainfall in a year is as follows:
Total Rainfall = Average rainfall × 12
The average rainfall of Jalpaiguri = 2674 mm
Total rainfall = 2674 × 12 mm
= 32,088 mm

Step 2:

We know that 1 m = 1000 mm.
Divide 32,088 by 1000 to convert 32,088 mm to m.
32,088 ÷ 1000 = 32.088 m
Therefore, Jalpaiguri received 32.088 m of rainfall in a year.

Bar Graph Questions

Question 6:

Below Is the Bar Graph That Represents the Data for the Rainfall of the First Five Months of a Place.

bar graph

Observe the Graph Properly and Answer the Following Question:

a) In Which Month Was the Highest Rainfall Recorded?

b) What Is the Average Rainfall for the First Five Months?

c) If the Total Rainfall Falls on the Area of 16 Square Cm, Then Calculate the Volume of the Rain.

Answer 6:

a) According to the graph, the highest bar is in January. Therefore, the highest rainfall is recorded in January and is equal to 111 cm.

b) The graph shows that:
In January, the rainfall depth was 111 cm.
In February, the rainfall depth was 56 cm.
In March, the rainfall depth was 73 cm.
In April, the rainfall depth was 20 cm.
In May, the rainfall depth was 13 cm.
Add all the rainfall depths to get the total rainfall.
Total rainfall = 111 + 56 + 73 + 20 + 13 cm
= 273 cm
The total rainfall = 273 cm
Number of months = 5

Average rainfall of the five months=
273 / 5

=54.6

c) The formula to calculate the volume of rainwater is:
Volume = Area × Total rainfall
= 16 × 273
= 4368
Therefore, 4368 cubic cm of rainwater was collected.

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