Explain clearly tidal levels for diurnal tide.

Diurnal tides are a type of tide that has one high tide and one low tide each day. Here's a step-by-step explanation of diurnal tidal levels:

1. Tidal Cycle: The tidal cycle begins with the moon in a specific position relative to a point on the Earth's surface. This position creates a gravitational pull, causing the water in the oceans to bulge out towards the moon. This bulge is what we refer to as a high tide.

2. Rotation of the Earth: As the Earth rotates on its axis, the point on the surface moves away from the bulge, causing the tide to fall. This is what we call low tide.

3. Continued Rotation: As the Earth continues to rotate, the point on the surface will eventually come back around to the bulge, causing another high tide. However, in a diurnal tide, this doesn't happen. Instead, the Earth rotates a full 360 degrees before the point on the surface comes back to the bulge. This means there is only one high tide and one low tide each day.

4. Moon's Orbit: The moon also orbits the Earth, but much slower than the Earth's rotation. This means that the timing of the high and low tides shifts slightly each day, as the moon's position relative to the point on the Earth's surface changes.

5. Tidal Levels: The levels of the high and low tides can vary depending on the specific alignment of the Earth, moon, and sun. When the three bodies are in a straight line (during a full moon or new moon), the gravitational forces are combined and we get higher high tides and lower low tides. When the three bodies form a right angle (during the first or third quarter moon), the gravitational forces partially cancel out and we get lower high tides and higher low tides.

In summary, diurnal tides have one high tide and one low tide each day, and the levels of these tides can vary depending on the alignment of the Earth, moon, and sun.