Lightning and thunder are related events. Lightning is a sudden, violent flash of electricity that occurs between a cloud and the ground. It
can also occur between two clouds in the sky. A lightning bolt can be several miles long and
can be straight or forked. It is very hot, with an average temperature of 34,000 degrees Celsius. This causes the air
around the electric bolt to expand, producing lots of sound energy. It is this sound energy that we hear as thunder.
Lightning and thunder are caused by the same event. Yet lightning is light energy, or electromagnetic energy,
whereas thunder is sound energy. Thus, we see lightning and hear thunder.
Compare and contrast or sequence ?