The Gravitational Pull and Earth's Tides

tidal force

tides

mountains to rise and fall, distort galaxies, and pull a person apart as they fall into a black hole

<p>sun, moon, and gravity</p> Signup and view all the answers

<p>tidal force</p> Signup and view all the answers

<p>changing the levels of the oceans</p> Signup and view all the answers

<p>The gravitational pull of the moon and the sun.</p> Signup and view all the answers

<p>The moon's gravity affects the oceans more because they are larger in size compared to an individual's body.</p> Signup and view all the answers

<p>Tidal bulges.</p> Signup and view all the answers

<p>Tides normally rise and fall twice in 24 hours.</p> Signup and view all the answers

<p>Spring tides are caused by the additive effect of the tidal bulges produced by the sun and moon aligning at full and new moon. Neap tides are caused by the sun and moon pulling at right angles to each other.</p> Signup and view all the answers

<p>The interactions between the Earth's rotation, friction with ocean beds, and the moon cause the tidal bulges to be slightly ahead in time compared to the moon's position.</p> Signup and view all the answers

<p>The interactions between the Earth, moon, and sun cause tides on Earth. The moon's gravitational pull creates a bulge of water on the near side of the Earth, while the sun also contributes to the tides, particularly during spring tide and neap tide.</p> Signup and view all the answers

<p>A tidal force is the difference in the strength of gravity between two points on a body. It is responsible for the deformations or bulges in a body caused by the gravitational influence of another celestial body, such as the moon or sun.</p> Signup and view all the answers

<p>The moon's gravitational influence on Earth is not uniform. It pulls more strongly on the near side of the Earth than it does on the center, and less strongly on the far side. This difference in gravitational pull causes the oceans to bulge on the near side and on the opposite side of the Earth.</p> Signup and view all the answers

<p>Spring tides are low tides that are very low and high tides that are very high. They occur during full and new moon when the gravitational forces of the moon and sun align.</p> Signup and view all the answers

<p>Neap tides are unusually weak ocean tides. They occur during first- or third-quarter moon when the gravitational forces of the moon and sun partially cancel each other out.</p> Signup and view all the answers

<p>This lesson mainly focuses on ocean tides and how the interactions between the Earth, moon, and sun cause them.</p> Signup and view all the answers

<p>The sun also contributes to the tides on Earth. Its effects are most notable during spring tide and neap tide.</p> Signup and view all the answers

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