| A | B |
|---|
| Gravity | the force of attraction between all objects in the universe |
| High tide | the maximum height reached by a rising tide |
| Low tide | the minimum height of a falling tide |
| Neap tide | a tide with a relatively small difference between high and low tide |
| Spring tide | a tide with a relatively large difference between high and low tide |
| tidal bulge | a bulge of water formed by the pull of the Sun and Moon's gravity |
| Tides | the regular rise and fall of ocean surfaces |
| waning | decreasing in size |
