Security Briefing and Background Check
Investigative Terms to Know the process that BREAKS down rock WEATHERING
the process by which natural forces move or CARRY sediment from one place to another GROUND EROSION
the process by which agents of erosion deposit, or DROP sediment DEPOSITION
Agent Gravity $ 1 million Mass Movement- any one of several processes where gravity moves sediment downhill
Crime: Landslide Landslide- the most destructive form of mass movement EROSION when rock and soil slide quickly down a steep slope
Crime: Mudflow Mudflow- the rapid downhill movement (EROSION) of a mixture of rock, soil, and water, usually after heavy rains
Crime: Slump Slump- a large mass of rock and soil that suddenly slips (ERODES) down a slope in one big piece, usually due to the soil beneath it becoming soaked and soft
Crime: Creep Creep- a very slow downhill movement (EROSION) of rock and soil, often due to freezing and thawing of water in rock below the soil
Glaciers- any large mass of ice that moves slowly over land Agent Glaciers $ 1 million Glaciers- any large mass of ice that moves slowly over land
Types of Glaciers Continental Glaciers Valley Glaciers
Crime: Plucking plucking- process of glacial EROSION where broken rock under the glacier freezes to the bottom of the glacier and is CARRIED to a new location
Crime: Tarn Lake tarn lake - a lake created when a glacier plucks or rips large amounts of rock from the Earth, leaving a hole for a lake
Crime: Abrasion abrasion- process of glacial EROSION where the rocks frozen to the bottom of glaciers scrape over the land, leaving scratches behind
Crime: Moraine Till- the mixture of sediments that glaciers DEPOSIT Moraine- till DEPOSITED at the edge of a glacier in a ridge
IMPRINT FILLS WITH WATER Crime: Kettle ICE A ICE SINKS B ICE MELTS C IMPRINT FILLS WITH WATER D Kettle- a small depression or imprint left in the land after a piece of a glacier breaks off and is DEPOSITED and left behind (often these imprints fill with water and become lakes)
Crime: Esker Esker- the riverbeds left behind from meltwater rivers that ran through the bottoms of glaciers
2 miles
Crime: Erratics Erratics- LARGE pieces of sediment that a glacier plucks from the ground, carries, and deposits in new locations