Water

About how much percent of Earth's surface is covered with water?

• 29%

• 82%

• 65%

• 71%

The Earth appears to be ______ colour from space.

• Black

• Red

• Green

• Blue

Contamination of both surface and underground water is called ___________.

• Water pollution

• Fresh water

• Tap water

The process by which water continuously changes its form

and circulates between oceans, atmosphere and land.

• Water cycle

• waves

• Air

• Tides

During the full moon and new moon days, the sun, the moon and the earth are in the same line and the tides are highest.

• Spring tides

• Neap tides

• Waves

• Currents

The largest tsunami ever measured was about _____ high.

• 190m high

• 80m high

• 150m high

• 20m high

________ tide helps in navigation.

• Ocean currents

• Low tides

• Medium tides

• High tides

Water vapour condenses to form ____________.

• Clouds

• Water vapour

• Liquid

• Water

Warm Ocean currents originate near the _____ and move

towards the _______.(Choose two answers)

• Equator

• Poles

• Water

_______ of the earth’s surface is covered by water.

• Three-fourth/71%

• One-fourth

• One-three