Explain why a tree or building gets burnt when lightning strikes it.
Answers
Answer:
When lightning strikes, the sap in the bark of the tree is subject to extreme temperatures many times hotter than the surface of the Sun due to electrical resistance. The electrical resistance causes the sap to be heated into steam, which can make it explode.
Explanation:
Trees struck by lightning can show several symptoms and have a range of damage. In general, when lightning hits a tree, the water in the cells beneath the bark is heated and boils. Steam causes an explosion that knocks the bark off.
A continuous groove of bark stripped along the entire length of the trunk or main branch is common. A crack that does not run the length of the trunk may indicate a side flash of lightning that strikes the tree, travels down the trunk, then jumps to an object with less electrical resistance.