Explanation:

A tsunami is a large ocean wave usually caused by a volcanic explosion or underwater earthquake: This statement is correct. Tsunamis are often generated by undersea earthquakes or volcanic eruptions that displace large volumes of water.

Tsunamis can be generated by meteorite impacts: This statement is also correct. While less common than earthquake or volcanic activity, tsunamis can be generated by large meteorite impacts in the ocean.

Tsunamis are tidal waves: This statement is not correct. Tsunamis are not tidal waves. Tidal waves are typically caused by the gravitational pull of the moon and the sun and are distinct from tsunamis, which are usually triggered by seismic or meteoritic activity.