Carrying umbrella is not a good idea at all during thunderstorms. As during the thunderstorm, the speed of wind will blow away the umbrella. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
Carrying umbrella is not a good idea at all during thunderstorms. As during the thunderstorm, the speed of wind will blow away the umbrella.
During the earthquake, I would take the following precaution: • I would try to find a clear spot, away from buildings, trees and overhead power lines. Drop to the ground. • If I am in a car or a bus, do not come out. Ask the driver to drive slowly to a clear spot. I will not come out till the tremorRead more
During the earthquake, I would take the following precaution:
• I would try to find a clear spot, away from buildings, trees and overhead power lines. Drop to the ground.
• If I am in a car or a bus, do not come out. Ask the driver to drive slowly to a clear spot. I will not come out till the tremors stop.
Three states in India are Gujrat, Rajasthan and Himachal Pradesh. In India, the areas most threatened are Kashmir, Western and Central Himalayas, the whole of North-East, Rann of Kutch, Rajasthan and the Indo – Gangetic Plane. Some areas of South India also fall in the danger zone. https://www.tiwarRead more
Three states in India are Gujrat, Rajasthan and Himachal Pradesh.
In India, the areas most threatened are Kashmir, Western and Central Himalayas, the whole of North-East, Rann of Kutch, Rajasthan and the Indo – Gangetic Plane. Some areas of South India also fall in the danger zone.
Two charged balloons have similar charges on the surfaces. Since like charges repel each other, that's why one charged balloon is repelled by another charged balloon. When an uncharged balloon is brought near a charged one, the uncharged balloon acquires some opposite charge. Since unlike charges atRead more
Two charged balloons have similar charges on the surfaces. Since like charges repel each other, that’s why one charged balloon is repelled by another charged balloon. When an uncharged balloon is brought near a charged one, the uncharged balloon acquires some opposite charge. Since unlike charges attract each other, therefore a charged balloon attracts an uncharged one.
Safety Measures during Lightning: • Open space is dangerous. Take cover under a building. • Thunder storm is an indication to rush for safer place. • Once thundering stops, move out to an open place.
Safety Measures during Lightning:
• Open space is dangerous. Take cover under a building.
• Thunder storm is an indication to rush for safer place.
• Once thundering stops, move out to an open place.
Richter Scale measures the destructive energy of an earthquake. Yes, seismograph can measure an earthquake of magnitude 3 on Richter Scale. It is of low intensity and will not cause any damage. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
Richter Scale measures the destructive energy of an earthquake. Yes, seismograph can measure an earthquake of magnitude 3 on Richter Scale. It is of low intensity and will not cause any damage.
Human body is a good conductor of electricity. A charged body loses its charge when we touch it with hand because the charges get transferred through our body to earth. This process of transferring of charges from charged body to earth is known as earthing. https://www.tiwariacademy.com/ncert-solutiRead more
Human body is a good conductor of electricity. A charged body loses its charge when we touch it with hand because the charges get transferred through our body to earth. This process of transferring of charges from charged body to earth is known as earthing.
Normally, Sweater is made of wool and the other inner clothes like shirts are made up of cotton and synthetic fibres. Due to friction among these, static charge gets accumulated on the sweater. While taking off sweater, an electric discharge occurs between sweater and the body which results in formiRead more
Normally, Sweater is made of wool and the other inner clothes like shirts are made up of cotton and synthetic fibres. Due to friction among these, static charge gets accumulated on the sweater. While taking off sweater, an electric discharge occurs between sweater and the body which results in forming of sparks and crackling sound.
The weather department has predicted that a thunderstorm is likely to occur on a certain day. Suppose you have to go out on that day. Would you carry an umbrella? Explain.
Carrying umbrella is not a good idea at all during thunderstorms. As during the thunderstorm, the speed of wind will blow away the umbrella. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
Carrying umbrella is not a good idea at all during thunderstorms. As during the thunderstorm, the speed of wind will blow away the umbrella.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See lessSuppose you are outside your home and an earthquake strikes. What precaution would you take to protect yourself?
During the earthquake, I would take the following precaution: • I would try to find a clear spot, away from buildings, trees and overhead power lines. Drop to the ground. • If I am in a car or a bus, do not come out. Ask the driver to drive slowly to a clear spot. I will not come out till the tremorRead more
During the earthquake, I would take the following precaution:
• I would try to find a clear spot, away from buildings, trees and overhead power lines. Drop to the ground.
• If I am in a car or a bus, do not come out. Ask the driver to drive slowly to a clear spot. I will not come out till the tremors stop.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See lessList three states in India where earthquakes are more likely to strike.
Three states in India are Gujrat, Rajasthan and Himachal Pradesh. In India, the areas most threatened are Kashmir, Western and Central Himalayas, the whole of North-East, Rann of Kutch, Rajasthan and the Indo – Gangetic Plane. Some areas of South India also fall in the danger zone. https://www.tiwarRead more
Three states in India are Gujrat, Rajasthan and Himachal Pradesh.
In India, the areas most threatened are Kashmir, Western and Central Himalayas, the whole of North-East, Rann of Kutch, Rajasthan and the Indo – Gangetic Plane. Some areas of South India also fall in the danger zone.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See lessExplain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by another charged balloon?
Two charged balloons have similar charges on the surfaces. Since like charges repel each other, that's why one charged balloon is repelled by another charged balloon. When an uncharged balloon is brought near a charged one, the uncharged balloon acquires some opposite charge. Since unlike charges atRead more
Two charged balloons have similar charges on the surfaces. Since like charges repel each other, that’s why one charged balloon is repelled by another charged balloon. When an uncharged balloon is brought near a charged one, the uncharged balloon acquires some opposite charge. Since unlike charges attract each other, therefore a charged balloon attracts an uncharged one.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See lessSuggest three measures to protect ourselves from lightning.
Safety Measures during Lightning: • Open space is dangerous. Take cover under a building. • Thunder storm is an indication to rush for safer place. • Once thundering stops, move out to an open place.
Safety Measures during Lightning:
See less• Open space is dangerous. Take cover under a building.
• Thunder storm is an indication to rush for safer place.
• Once thundering stops, move out to an open place.
Name the scale on which the destructive energy of an earthquake is measured. An earthquake measures 3 on this scale. Would it be recorded by a seismograph? Is it likely to cause much damage?
Richter Scale measures the destructive energy of an earthquake. Yes, seismograph can measure an earthquake of magnitude 3 on Richter Scale. It is of low intensity and will not cause any damage. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
Richter Scale measures the destructive energy of an earthquake. Yes, seismograph can measure an earthquake of magnitude 3 on Richter Scale. It is of low intensity and will not cause any damage.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See lessExplain why a charged body loses its charge if we touch it with our hand.
Human body is a good conductor of electricity. A charged body loses its charge when we touch it with hand because the charges get transferred through our body to earth. This process of transferring of charges from charged body to earth is known as earthing. https://www.tiwariacademy.com/ncert-solutiRead more
Human body is a good conductor of electricity. A charged body loses its charge when we touch it with hand because the charges get transferred through our body to earth. This process of transferring of charges from charged body to earth is known as earthing.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See lessSometime, a crackling sound is heard while taking off sweater during winters. Explain.
Normally, Sweater is made of wool and the other inner clothes like shirts are made up of cotton and synthetic fibres. Due to friction among these, static charge gets accumulated on the sweater. While taking off sweater, an electric discharge occurs between sweater and the body which results in formiRead more
Normally, Sweater is made of wool and the other inner clothes like shirts are made up of cotton and synthetic fibres. Due to friction among these, static charge gets accumulated on the sweater. While taking off sweater, an electric discharge occurs between sweater and the body which results in forming of sparks and crackling sound.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See lessWhen a glass rod is rubbed with a piece of silk cloth the rod
(b) becomes positively charged while the cloth has a negative charge. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
(b) becomes positively charged while the cloth has a negative charge.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See lessWhich of the following cannot be charged easily by friction?
(b) A copper rod https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
(b) A copper rod
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-15/
See less