Earth Science Important definitions

When a glacier slides over a rock and the rock beneath the glacier is scratched

• arc

• abraded

• disintergration

• hardness

sandbars that reach above sea level

• barrier islands

• islands

• beach

• sand dunes

a strip of sediment (usually sand or gravel) that extends from the low tide line to a cliff or zone of permanent vegetation

• baymouth bar

• island

• beach

• beach face

solid, unweathered portion of the lithosphere

• soil

• rock

• strata

• bedrock

average weather of a region over an extended period of time.

• weather

• climate

• temperature

• normal weather

ground moraine reshaped by later glaciers into stream hills of till

• physical weathering

• erosion

• drumlins

• downstreams

a mound or ridge of sand deposited by the wind

• mountain

• island

• beach

• dune

a condition in which opposing processes are balanced

• equal

• stable

• balanced forces

• dynamic equilibrium

a steep slope or cliff formed in sedimentary rocks due to the presence of competent (weather-resistant) rocks

• valley

• escarpment

• erosional deposition system

• sandbars

processes including the formation of a U-shaped valley and other features

• glacial erosion

• glacial movement

• glacial lakes

• glacial generation