Revision Grade 10

_______________ is the transfer of water between the land, sea and air. In this cycle water changes in form but not in amount as it moves between locations.

• Water table

• Hydrological Cycle

• Evaporation

• Precipitation

The processes or stages of the Hydrological cycle are

• Evaporation

• Precipitation

• Erosion

• Condensation

• Deposition

Percolation can be defined as

• The entry of water into the soil. Water soaks into the ground.

• the process when moisture changes from a gas into a liquid in the atmosphere as clouds.

• this includes all forms of moisture falling from the air on both land and sea under gravity- rain, snow sleet, hail.

• the continued downward movement of water through the spaces in the rock. Water sinks through the soil to greater depths below the surface.

The _____________ is where a river begins

• Mouth

• spring

• middle course

• source

Hydraulic action is

• the force of the river water itself acting on the beds and banks.

• the process by which stones, sand grains and other particles carried by the river are thrown against the bed and banks and help to erode them

• Stones and rocks carried downstream are thrown against each other.

• the actual place where the water is flowing

_____________ smaller rocks and pebbles are bounced along the riverbed.

• Traction

• Suspension

• Saltation

• Solution

All of the following are true about corals EXCEPT

• Coral will thrive in an area close to the mouth of a river

• tropical coral only live in seawater that has an average temperature of 18°C and over.

• Corals need sunlight for growth

• Corals consist of medicinal properties

Destructive waves plunge downwards.

• True

• False

Swash moves sand particles diagonally up the beach while Backwash moves sand directly down the beach.

• True

• False

Longshore drift is the movement of material along the coastline by the action of breaking waves(swash and backwash) which generally approach the shoreline at an angle.

• True

• False