Extra Questions Flashcards
(18 cards)
How are sand beaches created
Low energy waves and are flat and wide
How are shingles beaches created
High energy waves and are steep and narrow
What are levees
Natural embankments
What are estuaries
Tidal areas where river meets the sea
What are flood plains
Flat areas of land that flood
What is hydraulic action
Force of the river water colliding with rocks - breaks rock particles away from river channel
What is abrasion
Eroded rocks picked up by the river scrape and rub against channel
What is attrition
Eroded rocks are picked up by the river - crash into each other and break into smaller fragments
What is solution as type of erosion
River water dissolves some types of rock
What is solution as type of transportation
Soluble materials dissolve in water and carried along
What is traction
Large particles are pushed or rolled along river bed
What is suspension
Small particles carried along in water
Saltation
Pebble-sized particles are bounced along the river bed
What erosion happens at the upper course, middle course and lower course
Vertical erosion - upper
Lateral erosion - lower and middle
What is lateral erosion
Widens the river valley and channel
What is vertical erosion
Deepens the river valley and channel, making it v-shaped
Why is places hottter at equator
Sun energy is at a 90 degrees angle so strong hearing affect
Why are places colder at poles
At poles the angle is lower, so the same energy is spread out and has a lower heating
