EVERYDAY SCIENCE

Detailed explanation-1: -Sediments transported and deposited by glacial ice are known as till. Subglacial sediment (e.g., lodgement till) is material that has been eroded from the underlying rock by the ice, and is moved by the ice. It has a wide range of grain sizes, including a relatively high proportion of silt and clay.

Detailed explanation-2: -A kettle lake occurs where a chunk of ice was left behind in the till of a retreating glacier. When the ice melted, it left a depression. The meltwater filled it to form a lake. You can see examples of kettle lakes below (Figure below).

Detailed explanation-3: -A moraine is material left behind by a moving glacier. This material is usually soil and rock.

Detailed explanation-4: -Glaciers can freeze sediment and then deposit it elsewhere as the ice carves its way through the landscape or melts. Sediment created and deposited by glaciers is called moraine.

Detailed explanation-5: -Glaciers erode and transport rock as they flow down slope. Then, when the glaciers start to melt or recede, the sediment is deposited as unsorted glacial till, often in characteristic landforms such as moraines and their associated sedimentary facies.