What causes the oceans to bulge?
Gravity and inertia act in opposition on the Earth’s oceans, creating tidal bulges on opposite sites of the planet. On the “near” side of the Earth (the side facing the moon), the gravitational force of the moon pulls the ocean’s waters toward it, creating one bulge.
What are the three causes of Tides?
The relationship between the masses of the Earth, moon and sun and their distances to each other play a critical role in affecting the Earth’s tides.
What causes the oceans to bulge near the equator compared to the sea water at the polls?
The equatorial bulge affects the ocean, too—sea levels are slightly higher in equatorial regions than near the poles. The equatorial bulge is created by the Earth’s rotation. As lines of latitude increase in size, a point has to travel faster to complete a circle (revolution) in the same amount of time.
Why Earth is bulge at the equator?
An equatorial bulge is a difference between the equatorial and polar diameters of a planet, due to the centrifugal force exerted by the rotation about the body’s axis. A rotating body tends to form an oblate spheroid rather than a sphere.
Which country lies on the equator?
The Equator passes through 13 countries: Ecuador, Colombia, Brazil, Sao Tome & Principe, Gabon, Republic of the Congo, Democratic Republic of the Congo, Uganda, Kenya, Somalia, Maldives, Indonesia and Kiribati.
Which country is at the center of the Earth?
Talk to people about Ghana and they might ask: “Where’s that?” Ghana is pretty much right at the centre of the world, being both close to the equator and on the Greenwich Meridian, which represents 0° longitude.
Are the days longer at the equator?
Although the daytime length at the Equator remains 12 hours in all seasons, the duration at all other latitudes varies with the seasons. During the winter, daytime lasts shorter than 12 hours; during the summer, it lasts longer than 12 hours.
Why is there less daylight in the winter?
During winter, the Northern Hemisphere leans away from the sun, there are fewer daylight hours, and the sun hits us at an angle; this makes it appear lower in the sky. There is less heating because the angled sun’s rays are “spread out” rather than direct. (Shadows are longer because of the lower angle of the sun.)