What decides the tidal amplitude (height) at a point on a coast?Group of answer choicesAll of theseCoriolis effectposition of the Moonshape of the ocean basinposition of the Sun

The tidal amplitude (height) at a point on a coast is decided by several factors:

1. Position of the Moon: The gravitational pull of the moon causes the water in the oceans to bulge out in the direction of the moon. This bulge is the high tide. When the moon is closest to the Earth (perigee), it has a greater effect on the tides, resulting in higher high tides and lower low tides.

2. Position of the Sun: Similar to the moon, the sun's gravitational pull also affects the tides. When the sun, moon, and Earth are in alignment (during a full moon or new moon), the tides are especially high. These are called spring tides.

3. Shape of the Ocean Basin: The shape and depth of the ocean basin also affects the height of the tides. Narrow or shallow basins will amplify the height of the tide.

4. Coriolis Effect: This is the effect of Earth's rotation on the direction of the tides. In the Northern Hemisphere, it causes the tides to rotate in a clockwise direction, and in the Southern Hemisphere, it causes them to rotate counterclockwise.

So, the correct answer is "All of these".