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.
You 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