1. Vocabulary unit “ 13”

2. Flow: move smoothly.

3. Burst: break open suddenly and violently.

4. Ocean: a very big sea, e.g. the Atlantic ocean

5. Tide: the regular change in the sea level caused by the moon and sun.

6. Capsize: (used of boat) turn over in the water.

7. Drown: die in water because you can’t breathe.

8. Underwater: happening or existing below the surface of the water.