Question

The difference in the water level of the high tide and low tide is called-
A. Tidal bore
B. Tidal range
C. Crest
D. Tidal wave

Answer 1

Hint: 1. Tides originate in the oceans and progress towards the coastlines.
2. The tide has no beginning and no end.
3. Tides also create friction by rubbing against the ocean floor.

Complete Answer:
Tides are the rise and fall of sea levels due to the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.
The vertical difference in height between consecutive high and low waters over a tidal cycle is called tidal range. Tidal ranges varies due to changes in the position of the Moon and Sun relative to Earth.
Tidal ranges are usually largest in semi-enclosed seas and funnel shaped entrances of bay and estuaries such as the Bristol Channel in the UK.
On the contrary, the tidal ranges are typically smallest in the open ocean, along open ocean and coastlines and in almost fully enclosed seas such as the Mediterranean.

A. Tidal bore is not the correct option as it is simply a true tidal wave along a coast.
B. Tidal range is the correct option as it is the difference between the high tide and low tide.
C. Crest is the wrong option because it means the top of the wave.
D. Tidal wave is the wrong answer as it is simply an large ocean wave caused by an earthquake or volcanic eruption.

Hence the correct answer is Option B.

Note: 1. The Bay of Fundy has a tidal range of 16 meters whereas the Caribbean Sea has a tidal range between 10 and 20 centimeters.
2. Tidal power is one of the most efficient renewable energy sources.
3. The highest tidal range in the world happened in the Bay of Fundy, Canada with a total range of 16.3 metres(53.5 feet).