Practice

Pressure, Winds, Storms, and Cyclones — Practice

15 questions 15 min Recall + understand

Q1. Pressure is defined as
- A. Force per unit area
- B. Area per unit force
- C. Mass per unit volume
- D. Weight per unit length
Q2. The SI unit of pressure is
- A. Newton
- B. Newton per metre squared (N/m^2)
- C. Metre squared per newton
- D. Kilogram per metre
Q3. The unit newton per metre squared (N/m^2) used for pressure is also called
- A. Newton
- B. Joule
- C. Pascal (Pa)
- D. Watt
Q4. The pressure exerted by the air around us is known as
- A. Water pressure
- B. Liquid pressure
- C. Soil pressure
- D. Atmospheric pressure
Q5. The envelope of air surrounding the Earth is called the
- A. Atmosphere
- B. Hydrosphere
- C. Lithosphere
- D. Biosphere
Q6. Air flows from a region of
- A. Low pressure to a region of high pressure
- B. Equal pressure to a region of higher pressure
- C. High pressure to a region of low pressure
- D. Higher temperature to a region of higher pressure
Q7. The bright flash of light produced by a sudden flow of electric charges between or within clouds is called
- A. Thunder
- B. Cyclone
- C. Lightning
- D. Storm surge
Q8. When lightning rapidly heats the air around it, the air expands and produces a loud sound known as
- A. Thunder
- B. Lightning
- C. Echo
- D. Whistle
Q9. In a cyclone, the region of lowest pressure at the centre is known as the
- A. Eye of the cyclone
- B. Tail of the cyclone
- C. Centre of the storm surge
- D. Funnel of the cyclone
Q10. Cyclones are large storms that form over
- A. Hot desert sand
- B. Snow-covered mountains
- C. Cold polar regions
- D. Warm ocean waters
Q11. A storm accompanied by lightning and thunder is called a
- A. Cyclone
- B. Thunderstorm
- C. Land breeze
- D. Sea breeze
Q12. The pressure exerted by a liquid in a vessel depends on
- A. The colour of the liquid
- B. The shape of the vessel only
- C. The height of the liquid column
- D. The diameter of the vessel only
Q13. Activity 6.2 with a punctured plastic bottle (Fig. 6.7) shows that liquids exert pressure
- A. Only at the bottom of the container
- B. Only on the top surface
- C. Only when the liquid is heated
- D. In all directions, including the side walls
Q14. From Activity 6.6 of blowing between two suspended balloons, we infer that high-speed winds are accompanied by
- A. An increased air pressure
- B. A reduced air pressure
- C. No change in air pressure
- D. A reduced temperature only
Q15. A lightning conductor installed along the walls of a building is made of
- A. Wood
- B. A metal rod
- C. Plastic
- D. Rubber

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