CLASS IX REVISION WORKSHEET –CLIMATE

MCQ1 The term ‘Monsoon’ has been derived from ‘mausim’, a ________ language?

a. Latinb. Spanishc. Germand. Arabic

2. Which of the following regions experience annual rainfall more than 400 cm?a. Malabar coastb. Central Indiac. Ganga Plaind. Northern Himalayas

3. The term ‘ITCZ’ stands for?a. Inter-tropical convergence zoneb. Intra-tropical convergence zonec. Inter-temperate convergence zoned. None of these

4. What is ‘El Nino’?a. an area of high pressureb. warm ocean currentc. cold ocean currentd. an area of low pressure.

Fill in the blanks:1. The Western disturbances get originated over __________________.2. Jet streams blow over ______________.3. ITCZ lies close to the ______________.4. Madagascar lies to the _________ of Africa.

True or False.1. Delhi has a moderate type of climate.2. Distance from the sea does not matter the climate of a place.3. The temperature decreases as the altitude increases.4. Ocean currents affect the climate.

Match the columns1. High velocity winds in upper troposphere a. Indian Ocean2. El Nino b. Mediterranean Sea3. Western Disturbances c. Southern Oscillation

d. Jet Streams

DELHI PUBLIC SCHOOL AGRACLIMATE

Important Terms Climate- Sum total of weather conditions over a large area for a long period of time. Weather- The state of atmosphere over a very short period of time. Elements of Weather – Temperature, Atmospheric pressure, Wind, Humidity, Precipitation Climatic Controls- Latitude, Altitude, Pressure and Winds, Distance from the sea, Ocean currents, Relief Features Factors affecting Climate of India- Latitude, Altitude, Pressure and Winds. Jet Streams- Narrow belt, 12000m height having winds blowing at 110 km/hr in summer

and 184 km/hr in winter. Western Cyclonic Disturbances- Originate around the Mediterranean Sea, are brought by

the Westerly Jet streams in India in winter. Tropical Cyclones- During monsoons and in October to November over Bay of Bengal

and Arabian Sea, affect the coastal regions. They cause havoc in the coastal areas. The Indian Monsoons- The Arabs named seasonal reversal in wind direction as the

monsoon. Mechanism of the Monsoon- (a) Differential heating and cooling of land and water. (b) Shift in the position of ITCZ. North. (c) Intensely heated Ganga plains and the Tibetan plateau. (d) Movement of Jet streams to the north of Himalayas.