WEATHERING
EROSION
DEPOSITION
(BREAKING ROCKS )
(MOVING ROCKS )
(DUMPING ROCKS )
Weathering processes break down rocks into
smaller fragments
Erosion processes pick up and move those
weathered fragments to different locations.
Deposition is the settling out of the smallest
fragments (sediments) after they have been
eroded.
There are three types of weathering. Write their
names and give examples:
There are at least four agents (methods) of erosion.
Write down what they are here:
Can you think of five places where deposition may
occur?
Physical weathering
1. -------------------------------------------------------Examples:
Freeze/ thaw process
Onion skin weathering (thermal expansion or
contraction)
Sand blasting by sand.
Water
1. -------------------------------------------------------------Examples:
Erosion by waves
Erosion by rivers
Erosion by rain
River deltas
1. --------------------------------------------------------------
Chemical weathering
2. ------------------------------------------------------------Example
Reaction with acid rain (carbonic acid, sulphuric acid,
nitric acid)
Biological weathering
3. -----------------------------------------------------------Examples:
Plant roots
Actions of human beings or animals
Lichens/moss growing on the rock
Wind
2. ----------------------------------------------------------------Examples:
Erosion by wind in deserts to form unusual rock
structures
Ice
3. --------------------------------------------------------------Examples: Glaciers
Gravity
4. --------------------------------------------------------------------Example: Formation of scree slopes
Pebbles in rivers are further broken down by rubbing
against each other as they are moved downstream.
Base of mountains
2. ----------------------------------------------------------------
Bottom of oceans
3. --------------------------------------------------------------
Sand dunes
4. ------------------------------------------------------------
Base of glaciers
5. -----------------------------------------------------------------
WEATHERING
EROSION
DEPOSITION
(BREAKING ROCKS )
(MOVING ROCKS )
(DUMPING ROCKS )
Weathering processes break down rocks into
smaller fragments
Erosion processes pick up and move those
weathered fragments to different locations.
Deposition is the settling out of the smallest
fragments (sediments) after they have been
eroded.
There are three types of weathering. Write their
names and give examples:
There are four agents (methods) of erosion. Write
down what they are here:
Can you think of five places where deposition may
occur?
1. -------------------------------------------------------Examples:
1. -------------------------------------------------------------Example:
1. --------------------------------------------------------------
2. ---------------------------------------------------------------2. ----------------------------------------------------------------Example:
2. ------------------------------------------------------------Example
3. -------------------------------------------------------------3. --------------------------------------------------------------Example:
4. ------------------------------------------------------------
3. -----------------------------------------------------------Examples:
4. ----------------------------------------------------------------Example:
5. ----------------------------------------------------------------During erosion the rock fragments may be further
broken down into smaller particles called sediment.
Give an example: