Earths Surface and Hydrosphere Quiz

Horizontal and Vertical movements.

Oceans cover more than 70% of the Earth.

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

They surround all land masses.

Density and winds.

The Moon

The Moon's gravitational force pulls the water of the Earth nearest to the Moon.

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

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.

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.

Tides help destroy coastlines, form creeks and inlets, and shape low-lying areas for salt production.

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

Tidal energy can be harnessed to produce electricity.

Ocean currents are the regular movement of water from one part of the ocean to another.

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

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