Isostasy

What is isostasy?

• Adjustment to flooding levels

• Where there is a change in land level relative to sea level

• Change in river level due to flooding

• The melting of ice sheets

What is a glacier

• An ice-cream

• A large body of ice that is slowly moving down a slope or valley

• A large body of rock that is slowly moving down a slope or valley

• A large body of ice that is slowly moving up a slope or valley

Erosion at the origin of a stream channel, causing the origin to move back away from the direction of the stream flow, and so causes the stream channel to lengthen. This is called __________ ____________

• Lateral Erosion

• Vertical Erosion

• Wave Cut

• Headward Erosion

The lowest level to which a river can erode, usually the same as sea level is known as:

• Base level

• Headward erosion

• Incised meanders

• Knickpoint

Streams whose direction of flow is a result of (consequence) of the slope of the land over which they originally formed are known as:

• Consequent streams

• Headward erosion

• Superimpositon

• Eustatic sea level changes

The repetitive uplift of land and its wearing down to a lower level is known as:

• Cycle of erosion

• Isostacy

• Eustacy

• Base level

The point where a river’s flow is captured by another stream is called:

• Elbow of capture

• Base level

• Superimposition

• Consequent streams

The process whereby sea level rises or falls relative to the land is known as:

• Eustacy

• Isostacy

• Superimposition

• Base level

Steep-sided meanders in the mature or old stage of a river, e.g. River Nore, are known as:

• Entrenched/Incised meanders

• Knickpoint

• Base level

• River terrace

The process by which the land rises or falls relative to the sea is known as:

• Isostacy

• Eustacy

• Superimpositon

• Consequent streams