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Solutions ⇒ Class 7th ⇒ Science ⇒ 8. Winds, Storms and Cyclones

Solutions 8. Winds, Storms and Cyclones - Additional Questions With Solutions | Class 7 Science - Toppers Study

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Solutions 8. Winds, Storms and Cyclones - Additional Questions With Solutions | Class 7 Science - Toppers Study

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Chapter 8 Science class 7

Additional Questions With Solutions class 7 Science Chapter 8. Winds, Storms and Cyclones

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  • Storms And Cyclones - Additional Questions With Solutions | Class 7 Science - Toppers Study
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8. Winds, Storms and Cyclones

| Additional Questions With Solutions |

Solutions 8. Winds, Storms and Cyclones - Additional Questions With Solutions | Class 7 Science - Toppers Study


Additional Questions With Solutions


Ques: What is wind ?
Ans:The moving air is called the wind.

Ques: Which air is lighter? Warm air or cold air.
Ans:Warm air is lighter.

Ques: Why does smoke go up?
Ans: Smoke is warm, by which it is lighter so it goes up.

Ques: How do monsoon winds carry water and its rain?
Ans: Ocean airs are hot and mixed with land air they become hotter which cause rain.

Ques: What is thunderstorm?
Ans: The swift movement of the falling water droplets along with the rising air create lightning and sound. It is this event that we call a thunderstorm.

Ques: What is “Hurricane” or “Typhoon”.
Ans: A cyclone is known by different names in different parts of the world. It is called a ‘hurricane’ in the American continent. In Philippines and Japan it is called a ‘typhoon’.

Ques: What technologies are used to monitor cyclone?
Ans: Monitoring cyclones with the help of advance technology like satellites and radars.

Ques: What is caused cyclone?
Ans: High-speed winds and air pressure difference can cause cyclones.

Ques: Write two properties of wind.
Ans:

  1. It always moves.
  2. Winds carrying water vapour bring rain.
  3. Air moves from the region where the air pressure is high to the region where the pressure is low.

Ques: What are monsoon winds?
Ans: The air over the land gets heated and rises. This causes the winds to flow from the oceans towards the land. These are monsoon winds.

Ques: What factors are responsible for cyclones?
Ans: Factors like wind speed, wind direction, temperature and humidity are responsible for cyclone.

Ques: Suggest two methods to find out wind direction at a given place.
Ans:

  1. Seeing the direction of flying a left dry leaf.
  2. By wind direction indicator.         

Ques: State two experiences that made you think that air exerts pressure (other than those given in the text).

  1. After filling the air the balloon blown.
  2. Moving of curtain and door.

Ans: 

 
Ques: You want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answer.

Ans: No. because the ventilator provide path to excrete hot air from the room. They prevents house by strong wind like storm.  

Ques: Explain why holes are made in hanging banners and hoardings.
Ans: The air puts pressure on the banner but through the holes air passes easily without any damages.

Ques: How will you help your neighbours in case cyclone approaches your Village/town?
Ans:

  1. Alerting against the coming dangers
  2. Searching for shelter.
  3. Keeping storage of water and food.
  4. Setting up first aid facility.

Ques: What planning is required in advance to deal with the situation created by a cyclone?
Ans:

  1. Setting up cyclone warning system.
  2. Setting up food and water storage.
  3. Setting up first aid facility. 

Ques: Why are wind currents generated?
Ans: Wind currents are generated due to;

  1. Uneven heating between the equator and the poles.
  2. Uneven heating of land and water.

Ques: What does monsoon wind carry?
Ans: water

Ques: Where do thunderstorms develop mostly?
Ans: Thunderstorms develop in hot, humid tropical areas like india very frequently.

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3. Fibre to Fabric
4. Heat
5. Acids, Bases and Salts
6. Physical and Chemical Changes
7. Weather, Climate and Adaptations of Animals to Climate
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