La de Landscpaes

Question 1

Dry Valleys

Answer 1

During the ice age, permafrost covered the periglacial environment and precipitation was unable to infiltrate. The rivers eroded v shaped valleys and after the ice age, water infiltrates the chalk leaving dry valleys.

Question 2

Exposure

Answer 2

• The top of the anticline has been eroded away - exposing domes at the sides ( Chilterns/ North + South Downs )
• Dip ( gentle ) slope towards London
• Scarp ( steeper ) into the clay Vale

Question 3

Formation

Answer 3

Southern Uk was ex-periglacial permafrost, but as the Ice age ended it has melted. 3 different lands collided which has folded layers of sedimentary rock ( tectonics ).

Question 4

Human activity

Answer 4

To get water, lots of spring line settlements are made. There are pathways through valleys, which people can walk through. Markets bare based in towns for clay/flint/wood

Question 5

Hydrology

Answer 5

Chalk - can be infiltrated by water, permeable, porous
Clay - is not infiltrated by water, impermeable, non-porous. Chalk is on top of clay, so when the water reaches the clay it is forced back up to the surface ( resurgence )

Question 6

Sedimentary rocks Characteristics and types

Answer 6

these are made up of small particles of sand and rock, which have been transported by the wind, rivers and ice and are usually deposited on lake or seabed. Over many millions of years, successive layers of sediments accumulate. These layers of sediments are compressed by the weight of the deposits above, into sedimentary rocks.