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The tides change in the ocean due to the gravitational forces exerted by the moon and the sun on Earth. The gravitational pull of the moon causes bulges of water on the side of the Earth facing the moon and on the opposite side, creating high tides. As the Earth rotates within this gravitational field, different parts of the ocean experience high and low tides throughout the day. The sun also contributes to the tides, though to a lesser extent due to its greater distance from Earth.

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How are spring and neap tides different from high and low tides in terms of their impact on ocean water levels?

Spring tides and neap tides are different from high and low tides in terms of their impact on ocean water levels. Spring tides occur when the sun, moon, and Earth are aligned, causing higher high tides and lower low tides. Neap tides occur when the sun and moon are at right angles to each other, resulting in lower high tides and higher low tides. This means that spring tides have a greater impact on ocean water levels compared to neap tides.


Why are there tides in the ocean?

Tides in the ocean are caused by the gravitational pull of the moon and the sun on the Earth's water. The gravitational force from these celestial bodies creates bulges in the ocean's surface, causing the water to rise and fall in a regular pattern, resulting in high and low tides.


What causes periodic change in ocean level?

Periodic changes in ocean level are primarily caused by gravitational forces from the moon (resulting in tides) and the sun. The gravitational pull of these celestial bodies creates bulges in the ocean water, leading to the rise and fall of tides. Additionally, factors like winds, currents, and variations in sea temperature can also influence ocean levels on a more localized scale.


What are the daily changes in the elevation of the ocean surface are called?

The daily changes in the elevation of the ocean surface are called tides. Tides are primarily caused by the gravitational pull of the moon and to a lesser extent by the sun.


Explain how the size and shape of oceans are continuously changing?

The size and shape of oceans change due to various factors such as tides, currents, and erosion. Tides cause a periodic rise and fall in sea level, altering the shape of coastlines. Ocean currents can redistribute water, affecting the size and shape of ocean basins. Erosion from waves and weathering can also change the coastline, impacting the overall size and shape of oceans.