Short Term Geologic Processes
What is an example of a short term geologic process?
earthquake
What percentage of Earth's life have humans been around for?
0.004%
The principle of original horizontality states that what type of rocks are originally deposited flat and horizontal?
Sedimentary
Long term geologic processes typically occur over what time range?
Thousands to millions of years
The Earth is always changing.
T or F
True
Mountain or hill that molten rock (lava) erupts from.
Volcano
How many mass extinction events has Earth experienced?
5
What geologic principle states that the oldest rocks are found at the base of a sequence of rock layers?
Superposition
What geologic principle do geologists use to make interpretations about what ancient environments looked like?
uniformitarianism
What technique do scientists use to tell how old the Earth is?
radiometric dating
Large ocean wave generated by underwater ocean disturbance.
Tsunami
What caused the dinosaurs to go extinct?
asteroid impact with Earth
Look at the board for the figure.
Order the rock layers from youngest to oldest.
A,B,C,D
What geologic principle does the diagram represent?
Figure 3 on the board.
Angular unconformity
Short term geologic processes typically occur over what time range?
minutes to days
Which extinction event killed off 96% of all life on Earth?
Permian/Triassic extinction
Label the rock layers from oldest to youngest.
See Figure 2 on the board
F,E,D,C,B,A
Give an example of a long-term geologic process. (2 word answer)
canyon carving
mountain building
Ground shaking resulting from movement inside the Earth
Earthquake
How old is Earth?
4.5 billion years
Rocks currently being deposited in California are the same as rocks being deposited in Maine.
T or F
False
What percentage of Earth's history is represented by the "Great Unconformity" surface in the Grand Canyon?
25%