Water!

What is the upper part of a sea wave called?

• crest

• trough

• croups

• crust

What is meaning of the japanese word "tsunamis"?

• Tidal wave

• Seismic wave

• Sea wave

• Habour wave

What is the main cause for the occurance of tides?

• Planetary winds

• Rotation of the earth

• Gravitational pull

• Revulation of the earth

Is this statement true or false"the shape and size of a wave depends on the temperature"

• False

• False

• True

• True

Select 3 importances of tides?

• It helps to clear the sediments deposited by the rivers on their beds to prevent the situation of Harbour.

• It helps create spring tides and neap tides.

• It also creates crests and troughs.

• During high tides it makes it easier for fisher men to fish because all the fish comes to the coast.

• The energy of these tides is used to generate electricity.

Select the reasons form movement for water?

• Shape and Size

• Differences in temperature and salinity in ocean water

• When other waterbodies join the ocean

• Prevailing winds

When was the Indian Ocean tsunamis?

• 26 December 2000

• 1 February 2007

• 26 October 2019

• 26 December 2004

What is wave lenght?

• when there vertical distance between 1 crest to another or 1 trough to another.

• When there is no distance between 1 crest to another or 1 trough to another.

• When there is horizontal distance between 1 crest to another or 1 trough to another.

• The vertical and horizontal distance between 1 crest to another or 1 trough to another.

Sometimes ocean and tidal currents combine and form dangerous whirlpools called ________ in the ocean.

• Maelstroms

• Benguela

• cold currents

• maelstroms

When did the Good Friday earthquake happened?

• Japan 2020

• Ireland 1300

• Alaska 1964

• India 1960