1.In what way is lightning useful?
2.In what situation can lightning be dangerous?
3.List two uses of gold leaf electroscope?
4.what is a lightning strike. how can we protect ourselves from it?
5.List five safety measures lightning strikes?
Answers
Answer:
The danger to tall buildings can be reduced by placing a lightning conductor on them. If lightning strikes the building, it flows harmlessly to the earth through the conducto
Answer:
Lightning strikes dissolve unusable nitrogen in water and form a natural fertilizer which is absorbed by the roots of plants. Thus, lightning helps for nitrogen fixation. 2. Lightning also produces important gas called ozone which protects our planet from the harmful UV rays.
Lightning can be dangerous in the following situations: (i) When two clouds with unlike charges come near each other. (ii) When clouds charge tall buildings and trees by induction. The danger to tall buildings can be reduced by placing a lightning conductor on them
A gold leaf electroscope is the device used to detect electrical charge and, if compared to a known charge, can also detect its polarity. It shows the presence and magnitude of a charge by applying a charge to a top plate of copper connected to two pieces of gold leaf through a stem
Suspend activities for at least 30 minutes after the last clap of thunder. If no shelter is available, crouch low, with as little of your body touching the ground as possible. Lightning causes electric currents along the top of the ground that can be deadly over 100 feet away. Stay away from concrete floors or walls.
Avoid water during a thunderstorm. Lightning can travel through plumbing.
Avoid electronic equipment of all types. Lightning can travel through electrical systems and radio and television reception systems.
Avoid corded phones. ...
Avoid concrete floors and walls.