Question

Q1. )how does lightning occur? explain in detail. (5m)
Q2.)Explain the function of any 7 parts of the eye? (7m)
Q3.) Explain electrolysis with diagram. (3m)

Answer 1

Ans 1) Lighter, positively charged particles form at the top of the cloud. Heavier, negatively charged particles sink to the bottom of the cloud. When the positive and negative charges grow large enough, a giant spark - lightning -occurs between the two charges within the cloud.
Ans 2) The anatomy of the eye. The eye has many parts that must work together to produce clear vision: ... The cornea, a clear window at the front of the eye, covers the iris and the pupil. A clear lens, located behind the pupil, acts like a camera lens by focusing light onto the retina at the back of the eye.
Ans 3) This chemical change is calledelectrolysis. The electrolyte and the electrodes used in electrolysis form anelectrolytic cell. When electricity passes through an electrolyte, the positive ions of the electrolyte move towards the cathode (negative electrode), where they gain electrons to become a neutral substance

Answer 2

1) Lighter, positively charged particles form at the top of the cloud. ... When the positive and negative charges grow large enough, a giant spark - lightning - occurs between the two charges within the cloud. This is like a static electricity sparks you see, but much bigger.