Weathering And Erosin Flashcards
The principle of ____ states that the processes on earth that are happening today, also happened in the past during all of earth’s history.
Uniformitariansim
___ is the breaking down of rock by mechanical (physical) or chemical means.
Weathering
There are ____ types of Weathering? What are they
Two
Mechanical
Chemical
_____ weathering physically breaks rocks into smaller pieces
Mechanical
______ and ____ are two types of mechanical weathering
Ice wedging/frost action
abrasion
_____ breaks rocks mechanically when water soaks into cracks in rocks, freezes and then expands
Ice wedging
_____ breaks rocks mechanically when rocks are smashed, scraped and ground against other rocks by water, wind, gravity or ice
Abrasion
______ weathering breaks rocks down through chemical changes
Chemical
_____ chemically combines oxygen and iron to form rust which makes rocks soft and crumbly
Oxidation
_______ dissovles in water and forms carbonic acid which will dissolve rocks like marble and limestone
Carbon dioxide
When humans burn fossil fuels, _____ mixes with rainwater and makes acid rain which will quickly dissolve rocks
Pollution
Rocks weather ____ if they are softer or less dense
Faster
Rocks weather ____ in hot, wet climates
Faster
_______ is the movement of sediment by gravity, water, wind or ice
Erosion
_______ is the process where weather and eroded rocks (sediment) is deposited, or laid down, in a new area and makes new landforms.
Deposition
Weathering is the breaking down of rock by _____ or ____ means.
Mechanical
Chemical
Mechanical weathering physically breaks rocks into ______
Smaller pieces
Ice wedging/frost
Ice wedging/ frost action and abrasion are two types of _______ weathering
Mechanical
Ice wedging breaks rocks mechanically when ____ soaks into cracks in rock, ____ and then _____
Water
Freezes
Expands
Abrasion breaks rocks mechanically when rocks are _____, _____ and ____ against other rocks by water, wind, gravity or ice
Smashed
Scraped
Ground
Chemical weathering breaks down rocks through _____
Chemical changes
Oxidation chemically combines _____ with ____ to form ____ which makes rocks soft and crumbly
Oxygen
Iron
Rust
Carbon dioxide dissolves in water and forms _____ which willl dissolve rocks like ____ and ____
Carbonic acids
Marble
Limestone
When humans burn fossil fuels, pollution mixes with rainwater and makes _____ which will dissolve rocks ____
Acid rain
Quickly
Rocks weather faster if they are ___ or ____
Softer
Less dense
Rocks weather faster in _____
Hot,wet climate
Erosion is the movement of sediment by ____, ___, ____ or ____
Gravity,
Water
Wind
Ice
Deposition is the process where weathered and eroded rock (sediment) is _____, or _____, in a new area and makes new landforms
Deposited
Laid down
