Rock Cycle
What are the three categories of rocks?
Igneous, Sedimentary, Metamorphic
Is erosion a natural process? Yes or No
Yes
What type of changes are included in the process of weathering?
Physical and Chemical
The oldest rock is found on the bottom, the youngest is found at the top
Law of Superposition
How did scientists know what dinosaurs looked like?
Fossil evidence
Sedimentary rocks get their name from this substance that they are made of
Sediment
Erosion can be caused by what kind of weathering? Hint there are 4
Water, Ice, Gravity, Wind
The Grand Canyon is an example of what type of erosion?
Water
This is when one rock feature cuts through another
Cross Cutting Relationship
A fossil is an object that contains traces remains or evidence of:
Living things long ago
A rock that was sediment, under went pressure, melted down, cooled inside a volcano is this type of rock
Igneous
What is erosion?
The process of eroding by wind, water, ice or gravitational pull
(movement)
What comes first? Weathering or erosion?
Rock fragments that are included in rock must be older than the rock around it
Law of Inclusion
Eons are divided into:
Eras
These types of rocks can become sediment by weathering
Any type of rock
What pulls pieces of rock downhill to create a landslide?
Gravity
This is the process of breaking down and weakening sediments that will be moved by erosion
Weathering
This refers to the actual age of a rock
Absolute Age
Eras are divided into:
Periods
This is how rocks on the surface get pushed into Earth's core
Pressure
Weathering: breaking down
Erosion: Move sediments
Acid rain is an example of this type of weathering
Chemical weathering
This refers to the approximate age of a rock
Relative Age
The oldest sections of a Geologic Time Scale are shown on the ______________ and the recent sections would be on the _______________