Grade7 Geo Assessment November 2020

Rocks expand due to heating, and contract due to cooling, causing the wearing away of rocks. This type of weathering is called

• Thermal expansion

• Frost weathering

• Abrasion

• Denudation

Very slow down- slope movement of solid or loose debris is called_________

• Creep

• Landslide

• Debris flow

• Rock fall

The deep scratches on the surface made by moving glaciers are called

• Striations

• ground cover

• sand blasting

• attrition

Expansion of rocks due to the removal of a large mass of rock is called__________.

• Unloading

• Frost weathering

• Abrasion

• Oxidation

In ___________ debris moves down-slope as a fluid.

• Rock fall

• Earthflow

• Landslide

• Rock slide

Deflation is a process of this erosion

• wind

• river

• water

• wave

The rusting of iron is an example of __________ weathering.

• Thermal

• Biological

• Chemical

• Mechanical

Proper _______ methods on hillsides and mountain slopes can prevent mass wasting.

• Demolition

• Construction

• Erosion

• Irrigation

Sand dunes are created by the action of

• water

• waves

• ice

• wind

_____________ Weathering is very common in limestone and chalk regions where rainfall is sufficient.

• Mechanical

• Physical

• Biological

• Chemical