Geography - Air Past Paper PDF

 [Composition of the Atmosphere]{.smallcaps} =========================================== ***Fig. 4.1:** Constituents of Air* survival. They can not take [Air]{.smallcaps} 21 [Structure of the Atmosphere]{.smallcaps} ========================================= [Weather and Cl...

 [Composition of the Atmosphere]{.smallcaps} =========================================== ***Fig. 4.1:** Constituents of Air* survival. They can not take [Air]{.smallcaps} 21 [Structure of the Atmosphere]{.smallcaps} ========================================= [Weather and Climate]{.smallcaps} ================================= Temperature ---------------------------------- [Air]{.smallcaps} 23 Air Pressure ------------ Wind ---- 1. *Permanent winds* -- The trade winds, westerlies and easterlies are the permanent winds. 60°N 90°N 2. *Seasonal winds* -- These winds change their direction in different seasons. For 3. *Local winds* -- These blow only during a particular period of the day or year in a **High Pressure** 90°S [Air]{.smallcaps} 25  1. **Answer the following questions.** i. What is atmosphere? ii. Which two gases make the bulk of the atmosphere? iii. Which gas creates green house effect in the atmosphere? iv. What is weather? v. Name three types of rainfall? vi. What is air pressure? 2. **Tick the correct answer.** vii. Which of the following gases protects us from harmful sun vays? viii. The most important layer of the atmosphere is ix. Which of the following layers of the atmosphere is free from clouds? x. As we go up the layers of the atmosphere, the pressure xi. When precipitation comes down to the earth in the liquid form, it is called 3. **Match the following.** xii. Trade Winds (a) Incoming solar energy xiii. Loo (b) Seasonal wind xiv. Monsoon (c) Horizontal movement of Air xv. Wind (d) Layer of ozone gas e. Permanent wind f. Local wind 4. **Give reasons.** xvi. Wet clothes take longer time to dry on a humid day? xvii. Amount of insolation decreases from equator towards poles? [Air]{.smallcaps} 27 5. **For fun.** xviii. Solve this Crossword puzzle with the help of given clues:  xix. Make a weather calendar for one week. Use pictures or symbols to show different types of weather. You can use more than one symbol in a day, if the weather changes. For example, the sun comes out when rain stops. An example is given below: **1.** ------------------------------- -- **2.** **3.** **4.** **5.** **6.** **7.** [Air]{.smallcaps} 2ç