coastal landscapes Flashcards
define the term relief.
a term used by geographers to describe the physical features of a landscape.
define the term geology.
the study of rocks in landscapes.
define the terms swash and backwash.
swash is the forward movement of a wave and backwash is the backword movement of a wave.
define the term fetch.
the distance of wind
name 3 or more differences between constructive and destructive waves.
constructive waves are long in length and short in height and destructive waves are short in length and tall in height. constructive waves has stronger swash but weaker backwash.
why do surfers prefer constructive waves?
surfers prefer constructive waves because they give longer rides.
define mechanical weathering.
mechanical (physical) weathering is the disintegration of rocks.
define chemical weathering.
chemical weathering is caused by chemical changes.
define biological weathering.
biological weathering is dues to the actions of flora and fauna.
define hydraulic pressure.
the sheer force of waves.
define corrosion.
when certain types of rocks are slowly dissolved by seawater.
define attrition.
when waves cause rocks and pebbles to bump into each other and wear down their size.
define abrasion.
results from large waves hurling beach/eroded material against a cliff.
define solution.
dissolved chemicals often derived from limestone or chalk.
define suspension.
particles carried within water.
define traction.
large pebbles rolled along the seabed.
define saltation.
a ‘hopping’ or ‘bouncing’ motion of particles too heavy to be suspended
why does longshore drift only occur on some beaches?
because of the directions of winds.
name the 4 types of mass movement.
landside, mudflow, rotational slip, rockfall
