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Earths Surface and Hydrosphere Quiz

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Questions and Answers

What are the two main types of regular movements in the oceans?

Horizontal and Vertical movements

What percentage of the Earth's surface do the oceans occupy?

More than 70%

What causes the regular rhythmic motion of tides?

Gravitational attraction exerted upon the Earth by the Sun and the Moon

How do the oceans affect the Earth's surface?

They surround all land masses Signup and view all the answers

What are the two main causes of the regular movements in the oceans?

Density and winds Signup and view all the answers

What exerts a strong gravitational pull on the Earth, causing the formation of tides?

The Moon Signup and view all the answers

What causes high tides to occur later each day?

The Moon's gravitational force pulls the water of the Earth nearest to the Moon. Signup and view all the answers

What are spring tides and when do they occur?

Spring tides occur when the sun, the moon, and the earth are in a straight line, resulting in higher tide heights. Signup and view all the answers

What is perigee and when does it occur?

Perigee is the point at which the Moon is closest in its orbit to the Earth, occurring around 1st January when the Earth is nearest the Sun. Signup and view all the answers

What is a neap tide and when does it occur?

A neap tide is a period of moderate tides that occurs seven days after a spring tide, when the sun, moon, and Earth are at right angles to each other. Signup and view all the answers

What are the effects of tides on coastlines and salt production?

Tides help destroy coastlines, form creeks and inlets, and shape low-lying areas for salt production. Signup and view all the answers

What role do tides play in the lives of fishermen?

The rhythm of high and low tides controls the lives of fishermen, who sail out and return with the tide. Signup and view all the answers

How can tidal energy be harnessed?

Tidal energy can be harnessed to produce electricity. Signup and view all the answers

What are ocean currents?

Ocean currents are the regular movement of water from one part of the ocean to another. Signup and view all the answers

What are the main factors that determine the circulation pattern of ocean currents?

The main factors are prevailing winds, the shape and position of landmasses, and the depths of oceans. Signup and view all the answers

What causes the circulation pattern of ocean currents?

The circulation pattern is mainly caused by the difference in density of seawater and variation in temperature. Signup and view all the answers