Denudation

---------- is the breakdown & decay of rocks that are exposed to the weather.

• weathering

• folding

• mass Movement

• erosion

There are __________ main types of weathering.

• five

• four

• three

• two

What is the wearing away or breaking down of rocks called?

• Deposition
• Erosion
• Glaciers
• Weathering

What is erosion?

• The wearing away of rocks, their transportation & deposition in a new place

• The breaking of rocks

• The dropping of sediment

• Movement of loose material down a slope under the influence of gravity

Which are agents of erosion

• chemicals in rain

• earthquakes and gravity

• 007 & ice

• wind, rivers & glaciers

What are the processes of denudation

• Weathering, sun & rain

• Erosion, Earthquakes & Mass Movement

• Weathering, Mass Movement & Erosion

What is the name given to loose rock materials?

• Bedrock

• Soil

• Regolith

• Corestone

How does freezing water cause the weathering of rocks?  The freezing water—

• keeps the rocks in place
• makes the rocks last longer
• expands cracks and breaks rocks
• causes rocks to fall in landslides

What is mechanical weathering?

• Process through which rocks are physically broken into smaller pieces.
• Rocks are broken down through chemical changes.
• Rocks are worn away from acid in plant roots.
• Rocks broken down by machinery.

The diagrams  shows a natural process that weathers rock.
 Which statement best explains why this process results in weathering?

• frozen water acts as a solute
• water expands when it freezes
• the mass of water increases when it freezes
• frozen water dissolves most types of rock