The Water Cycle - Year 9 Science

How much salt water covers the Earth?

• 55%

• 65%

• 75%

When water is heated in the ocean by the sun and turns into water vapour

• condensation

• evaporation

• transpiration

Water in lakes and rivers that does not contain salt

• recycled water

• fresh water

• new water

When water vapour is cooled and forms droplets

• condensation

• evaporation

• transpiration

After condensation, the droplets of water in the clouds fall to Earth in different forms

• precipitation

• condensation

• evaporation

Water that evaporates from the ocean

• contains sand and salt

• contains salt

• does not contain salt.

Forms of precipitation are

• only sleet and snow.

• rain, sleet, snow and hail

• only dew mists and rain

Precipitation occurs because

• the droplets evaporate in the air

• the droplets are to light for the air to hold

• the droplets are too heavy for the air to hold.

The sun’s energy

• changes daily

• heats the ocean before evaporation

• directly causes evaporation.

If water was heated in an experiment by a hot plate to model the water cycle, the hot plate represents

• the wind

• the Bunsen burner

• the sun