1) A single bolt of lightning can heat the surrounding air to temperatures five times hotter than the surface of the sun.

2) The word "forest" contains two vowels: O and E.

3) The intensity of cyclones is often measured using the Saffir-Simpson Hurricane Wind Scale, which categorizes them based on their sustained wind speeds.

4) Insurance policies often contain exclusions, which are specific events or circumstances that are not covered by the policy.