High tides occur twice each day, roughly 12 hours apart. The reason for this daily cycle is one of the motions you've already studied in this unit.Select the option that best explains why there are two high tides each day.Note: It's OK if you don't know the answer yet – just make your best guess.Thanks for voting! Remember, you can still change your mind until your teacher closes the poll.The Earth spinning on its axisThe Moon orbiting the EarthThe Earth orbiting the Sun

The reason there are two high tides each day is due to the Moon orbiting the Earth. Here's a step-by-step explanation:

1. The Moon's gravitational pull is strongest on the side of the Earth that is closest to the Moon. This causes the water on this side to be pulled towards the Moon, causing a high tide.

2. At the same time, the Moon's gravitational pull is weakest on the side of the Earth that is furthest from the Moon. This causes the water on this side to be "left behind" as the Earth is pulled towards the Moon, also causing a high tide.

3. As the Earth rotates on its axis, different parts of the Earth come under these areas of strongest and weakest gravitational pull, causing high tides to occur roughly every 12 hours.

4. The Earth's orbit around the Sun also affects tides, but to a much lesser extent than the Moon's orbit around the Earth. This is because the Sun is much further away, so its gravitational pull on the Earth is much weaker.