Mash up
Forms from groundwater making a cave, then the roof of the cave falling in.
sink hole
Define chemical weathering.
The process by which chemical reactions break down rocks and change them into new material.
Define erosion.
The removal of weathered material from one location to another.
Define deposition.
The settling or laying-down of eroded materials.
Define physical weathering.
The process of physical forces breaking down rock into smaller pieces.
Made by a longshore current depositing sand off shore.
barrier island
What is the main hint that chemical weathering has occured?
Color change.
Where does a stream erode the most, flowing down the mountain or in the plains?
Flowing down the mountain erodes more rocks.
How does gravity affect erosion and deposition?
Gravity pulls objects down, so eroded material typically moves and deposits, or settles, towards the ground.
What are the main forces that contribute to physical weathering?
Water and wind.
Fine baby powder like dirt that blows in the wind and is deposited
loess
Name a type of chemical weathering.
Oxidation or acid precipitation
Describe the process of beach erosion.
Waves continually crashing against a beach cause the sand to be eroded away and carried out into the ocean, diminishing the size of the beach.
Name a landform that is a result of deposition.
Several correct answers.
How are physical and chemical weathering similar?
They both break down rocks.
stalagtites
What is acid precipitation?
Rain with a low pH from pollution that dissolves rocks and increases the rate of chemical weathering.
Ocean waves can erode rock and create which types of landforms? name 3 types
sea caves, sea arches, sea stacks, wave cut platforms
What landform is created at the bottom of the mountain where rocks are deposited in a fan like shape?
Alluvial fan
Describe the process of abrasion.
The grinding away of rock by friction or impact, usually by water or wind.
Wind blows sand away leaving bigger rocks behind. This is called _______________________
Desert pavement
How is chemical weathering different from physical weathering?
Chemical weathering changes the substance of rocks into something new, while physical weathering breaks rocks into smaller pieces.
continental glaciers make flat landscapes and alpine glaciers create peaks, circques, horns, and rugged mountain landscapes
Describe how erosion and deposition work together to create sand dunes.
Wind erosion moves sand on beaches, and deposition is the process of the sand settling into a mound, or dune, on the beach.
Describe the process of pothole formation and identify the type of physical weathering it is.
Ice wedging - water enters cracks in roads and expands when it freezes, widening the cracks and eventually creating holes in the road.