Self-help is the best help. Therefore it is better to plan in advance and be ready with defense against any approaching cyclone. Planning required in advance to deal with cyclone-hit situation: • Keep an emergency kit at home. • Store enough food in water proof bags. • Store safe drinking water as cRead more
Self-help is the best help. Therefore it is better to plan in advance and be ready with defense against any approaching cyclone. Planning required in advance to deal with cyclone-hit situation:
• Keep an emergency kit at home.
• Store enough food in water proof bags.
• Store safe drinking water as contaminated water can cause diseases.
• Keep phone numbers of emergency services like police, hospital, friends and relatives ready.
• Make necessary arrangements to shift the essential household goods, domestic animals and vehicles, etc. to safer places.
On approaching of the cyclone, we should do the following: • Help our neighbours and friends in shifting their important household goods, cattle and vehicles to safer places. • Communicate with government agencies like police, fire brigade, medical centres and other emergency service points as per rRead more
On approaching of the cyclone, we should do the following:
• Help our neighbours and friends in shifting their important household goods, cattle and vehicles to safer places.
• Communicate with government agencies like police, fire brigade, medical centres and other emergency service points as per requirement.
• We should store water for safe drinking.
• We should avoid driving roads nearby flood hit areas.
Air exerts pressure in all directions. If banners and hoardings do not have holes, pressure exerted by wind may tear them off or make them fall. Holes let the air pass through and reduce the air pressure on banners and hoardings. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-Read more
Air exerts pressure in all directions. If banners and hoardings do not have holes, pressure exerted by wind may tear them off or make them fall. Holes let the air pass through and reduce the air pressure on banners and hoardings.
Smoke from kitchen and warm air being lighter rise up. If there is no outlet like ventilators, it will be difficult to escape for warm air and will heat up the room and could cause suffocation and discomfort. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
Smoke from kitchen and warm air being lighter rise up. If there is no outlet like ventilators, it will be difficult to escape for warm air and will heat up the room and could cause suffocation and discomfort.
We can experience air pressure in our daily activities such as: • Tree leaves and branches flutter due to pressure exerted by air in the form of wind. • It is difficult to ride a bicycle against the wind but it is much easier in the direction of wind. https://www.tiwariacademy.com/ncert-solutions/clRead more
We can experience air pressure in our daily activities such as:
• Tree leaves and branches flutter due to pressure exerted by air in the form of wind.
• It is difficult to ride a bicycle against the wind but it is much easier in the direction of wind.
The following methods can be used to get the direction of wind: • Take some fine and lighter sand in your hand and slowly slip it off. Movement of dust particles in a particular direction will give the direction of wind flowing. • Fly a kite. In the direction the kite flies shall be the wind directiRead more
The following methods can be used to get the direction of wind:
• Take some fine and lighter sand in your hand and slowly slip it off. Movement of dust particles in a particular direction will give the direction of wind flowing.
• Fly a kite. In the direction the kite flies shall be the wind direction.
• Take bit of paper on your palm. The piece will fly in the direction of wind is blowing.
• Use anemometer or wind wane.
Which of the statements given below is correct?
(i) In winter the winds flow from the land to the ocean. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
(i) In winter the winds flow from the land to the ocean.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessWhich one of the following place is unlikely to be affected by a cyclone?
(iii) Amritsar https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
(iii) Amritsar
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessWhat planning is required in advance to deal with the situation created by a cyclone?
Self-help is the best help. Therefore it is better to plan in advance and be ready with defense against any approaching cyclone. Planning required in advance to deal with cyclone-hit situation: • Keep an emergency kit at home. • Store enough food in water proof bags. • Store safe drinking water as cRead more
Self-help is the best help. Therefore it is better to plan in advance and be ready with defense against any approaching cyclone. Planning required in advance to deal with cyclone-hit situation:
• Keep an emergency kit at home.
• Store enough food in water proof bags.
• Store safe drinking water as contaminated water can cause diseases.
• Keep phone numbers of emergency services like police, hospital, friends and relatives ready.
• Make necessary arrangements to shift the essential household goods, domestic animals and vehicles, etc. to safer places.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessHow will you help your neighbours in case cyclone approaches your village/town?
On approaching of the cyclone, we should do the following: • Help our neighbours and friends in shifting their important household goods, cattle and vehicles to safer places. • Communicate with government agencies like police, fire brigade, medical centres and other emergency service points as per rRead more
On approaching of the cyclone, we should do the following:
• Help our neighbours and friends in shifting their important household goods, cattle and vehicles to safer places.
• Communicate with government agencies like police, fire brigade, medical centres and other emergency service points as per requirement.
• We should store water for safe drinking.
• We should avoid driving roads nearby flood hit areas.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessExplain why holes are made in hanging banners and hoardings.
Air exerts pressure in all directions. If banners and hoardings do not have holes, pressure exerted by wind may tear them off or make them fall. Holes let the air pass through and reduce the air pressure on banners and hoardings. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-Read more
Air exerts pressure in all directions. If banners and hoardings do not have holes, pressure exerted by wind may tear them off or make them fall. Holes let the air pass through and reduce the air pressure on banners and hoardings.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessYou want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answer.
Smoke from kitchen and warm air being lighter rise up. If there is no outlet like ventilators, it will be difficult to escape for warm air and will heat up the room and could cause suffocation and discomfort. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
Smoke from kitchen and warm air being lighter rise up. If there is no outlet like ventilators, it will be difficult to escape for warm air and will heat up the room and could cause suffocation and discomfort.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessState two experiences that made you think that air exerts pressure (other than those given in the text).
We can experience air pressure in our daily activities such as: • Tree leaves and branches flutter due to pressure exerted by air in the form of wind. • It is difficult to ride a bicycle against the wind but it is much easier in the direction of wind. https://www.tiwariacademy.com/ncert-solutions/clRead more
We can experience air pressure in our daily activities such as:
• Tree leaves and branches flutter due to pressure exerted by air in the form of wind.
• It is difficult to ride a bicycle against the wind but it is much easier in the direction of wind.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessSuggest two methods to find out wind direction at a given place.
The following methods can be used to get the direction of wind: • Take some fine and lighter sand in your hand and slowly slip it off. Movement of dust particles in a particular direction will give the direction of wind flowing. • Fly a kite. In the direction the kite flies shall be the wind directiRead more
The following methods can be used to get the direction of wind:
• Take some fine and lighter sand in your hand and slowly slip it off. Movement of dust particles in a particular direction will give the direction of wind flowing.
• Fly a kite. In the direction the kite flies shall be the wind direction.
• Take bit of paper on your palm. The piece will fly in the direction of wind is blowing.
• Use anemometer or wind wane.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessFill in the blanks: Air moves from a region of __________ pressure to a region of __________ pressure.
Air moves from a region of high pressure to a region of low pressure. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
Air moves from a region of high pressure to a region of low pressure.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See lessFill in the blanks: Near the earth’s surface __________ air rises up whereas ___________ air comes down.
Near the earth’s surface warm air rises up whereas cooler air comes down. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
Near the earth’s surface warm air rises up whereas cooler air comes down.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-8/
See less