depositional landforms

Question 1

formation of till plains

Answer 1

till= unsorted glacial material from erosion and weathering
form when an ice sheet detaches from main glacier and melts causing the till to deposit on valley floor leaving

Question 2

formation of erratics

Answer 2

large boulder that is different type to surrounding rocks.
this is broken off by erosion and weathering transported by glacier then deposited when glacier has lost energy

Question 3

what are the 5 types of moraines?

Answer 3

lateral, medial, ground, recessional,terminal

Question 4

what is a lateral moraine?

Answer 4

material deposited on the sides of a glacier leaving a ridge when ice melts

Question 5

what is a medial moraine?

Answer 5

formed when two lateral moraines meet in the middle of a glacier and deposit material

Question 6

what is a ground moraine?

Answer 6

when it is carries under the glacier and abraded by the glacier and valley floor
THIS IS the ONLY sorted moraine

Question 7

what is a recessional moraine?

Answer 7

moraine that forms at the end of a glacier when retreating glacier is stationary for a long time

Question 8

what is a terminal moraine?

Answer 8

material deposited at the snout of a glacier on the valley floor

Question 9

formation of drumlin

Answer 9

when glacier hits an obstacle that can’t be eroded so deposition from underneath the glacier builds up behind the obstacle. glacier moves over the mound then drags excess along the sides. causing a tear drop with a tapered edge
blunt end=stoss side
tapered end=lee side

Question 10

name all the depositional landforms

Answer 10

drumlins, erratics, moraines, till plains