Weathering and Mass Movement

________ is classified by the speed at which it happens.

________ falls onto the exposed limestone and passes through vertical joints or cracks in the limestone pavement.

________ and the physical force of the moving water, called hydraulic action, enlarge the joints and bedding planes.

________ and shrubs protect the soil from weathering and erosion.

Weathering and ________ produce loose material called regolith.

________ can also occur in the aftermath of a volcano in snowy regions, a volcanic eruption will cause snow and ice to melt quickly.

An avalanche in a ski resort in the ________ killed three skiers in March 2017.

Controlled explosions in ________ can be used to trigger small avalanches, making large, life- threatening avalanches less likely.

The ________ contains a gas called carbon dioxide (CO2)

A(n) ________ is the rapid movement of snow and ice downslope when the weight of the snow is too much for the slope to hold.

________ can speed up mass movement.

________ can try to control natural disasters caused by mass movement.

Water also acts as a lubricant, which makes the movement of the ________ easier.

As a(n) ________ flows over the limestone, the water widens the joints in the rock through carbonation.

________ is a permeable rock.

A(n) ________ is the rapid movement of regolith down a steep slope that has become unstable.

________ breaks up rocks into smaller pieces by putting pressure on the rock.

A landslide caused by ________ in south- west China in June 2017 buried 62 homes and more than a hundred people.

________ landscapes: areas where limestone rock is exposed to carbonation.

________ occurs high up in mountainous areas where there is a lot of precipitation (rain, sleet and snow) and the temperatures regularly rise above and fall below freezing point.

________ is the movement of soil down a slope under the influence of gravity.

________ is when rocks are dissolved because of a chemical reaction.

The water evaporates and leave ________ on the floor of the caves directly below the stalactites.

________ is when regolith moves down a slope due to gravity.

________ (H2O) mixes with the CO2 to form a weak carbonic acid (H2CO3)

________ occur when soil and regolith become saturated with water after periods of heavy rainfall and move downslope like a river of mud.

________ makes the joints wider by dissolving the calcium ________ in the limestone until they then look like grooves or gaps in the limestone.

________ is the breaking- down of rocks and soil and transportation of the ________ material.

The roots of the plants bind the soil and keeps it stable to prevent ________.

rivers and seas

glaciers

wind

Freeze-thaw action

fluctuating temperatures

Carbonation

rainwater can pass through the rock

areas where limestone rock is exposed to carbonation

limestone pavement

long vertical cracks in limestone rock

the horizontal paces between the layers or strata in limestone

hang from the roof

on the floor

Steepness of the slope