Cyclone and monsoon · चक्रवात और मानसून
What makes a cyclone? When does the monsoon come? Learn, sort and quiz.
Cyclone and monsoon games
Cyclone · चक्रवात
A cyclone is a huge storm of winds spiralling around a centre of very low pressure. It forms over warm seas; the centre (eye) is calm, the wall around it has the strongest winds and rain. In the northern hemisphere the winds turn anticlockwise.
| IMD category | Wind speed |
|---|---|
| Depression | 31–49 km/h |
| Deep depression | 50–61 km/h |
| Cyclonic storm | 62–88 km/h |
| Severe cyclonic storm | 89–117 km/h |
| Very severe cyclonic storm | 118–166 km/h |
| Extremely severe cyclonic storm | 167–221 km/h |
| Super cyclonic storm | 222 km/h and above |
Monsoon · मानसून
- South-west monsoon (June–September): moist winds from the sea bring most of India's rain; reaches Kerala around 1 June.
- North-east (retreating) monsoon (October–December): rain on the Tamil Nadu coast.
- Windward slopes get heavy rain; the far side is a rain-shadow area.
For Class 7 to 9 (NCERT Curiosity 8, “Pressure, Winds, Storms, and Cyclones”; Exploring Society 7, “Climates of India”). Wind-speed bands as used by IMD.
A one-page chart to stick on the wall, and a worksheet to practise.
Cyclone and monsoon
Cyclone · चक्रवात
A cyclone is a huge storm of winds spiralling around a centre of very low pressure. It forms over warm seas; the centre (eye) is calm, the wall around it has the strongest winds and rain. In the northern hemisphere the winds turn anticlockwise.
| IMD category | Wind speed |
|---|---|
| Depression | 31–49 km/h |
| Deep depression | 50–61 km/h |
| Cyclonic storm | 62–88 km/h |
| Severe cyclonic storm | 89–117 km/h |
| Very severe cyclonic storm | 118–166 km/h |
| Extremely severe cyclonic storm | 167–221 km/h |
| Super cyclonic storm | 222 km/h and above |
Monsoon · मानसून
- South-west monsoon (June–September): moist winds from the sea bring most of India's rain; reaches Kerala around 1 June.
- North-east (retreating) monsoon (October–December): rain on the Tamil Nadu coast.
- Windward slopes get heavy rain; the far side is a rain-shadow area.
kheloaurseekho.in — free charts, games and worksheets
Cyclone and monsoon — worksheet
Name: ____________________ Class: ______ Date: __________
kheloaurseekho.in — free charts, games and worksheets
