Vocabulary
What was it called when all the continents were together, in a single land mass?
What is Pangea
What is formed when Earths crust on the Ocean floor sinks back into the mantle, melts, then escapes to the surface?
What is a volcano
Can Volcanic eruptions have positive impacts on an environment?
Yes!
They can add minerals to the soil (which promotes new growth) and they precious metals and gemstones can be found (in cooled lava)
What is relative dating?
The method of determining the age of an object or event based on the age of some other object or event
(just say something close)
Define Plate Tectonics
Blocks that move upon the Earth's mantle as large peices.
What divides Earth's history into intervals from oldest (at the bottom) to youngest (at the top).
What is a Geologic Time Scale
What can be formed from Sea-Floor spreading?
what are Mid-Ocean ridges
True or False, Earthquakes NEVER cause any change to the environment.
False, some earthquakes are so small that they do not cause any change, but Earthquakes ARE able to cause change.
What is the method of estimating the age of a rock formation?
What is absolute dating
True or false, Moutains, Volcanoes, Sea-floor spreading, and earthquakes are caused by Plate tectonics.
True
What is the geologic principle that states that the Earth evolves or changes the same way now, as it did in the past?
What is Uniformitarianism
What is formed when tectonic plates move past each other?
What is a fault
What part of the Earth's crust are plate tectonics found?
The Lithosphere
Define the law of superposition
The youngest rock layer is on the top, and the oldest is on the bottom of a rock formation.
How do we have evidence of the Pangea?
Fossils of lifeforms native to certain continets have been found on other continets.
What is Sea-Floor Spreading
What can form archipeligos, mountains, plateus, and islands?
What is volcanic eruptions
What can Ice Core Data tell us about Earth's history?
The layers from ice cores give us information about how the atmosphere was when the layer was formed.
What is the principle that allows sediment to be formed in horizontal layers?
What is the principle of horizontality
How do Plate Tectonics cause Earthquakes?
An Earthquake is caused by a quick or sudden moving and shaking of Tectonic Plates.
What is a chain of islands formed from volcanoes called?
What is an archipelago
How is a mountain chain formed?
Continental plates meet head on, and the crust buckles, pushing it upward or sideways.
(answer just has to be close)
What epoch are we currently in?
The Holocene epoch.
The principle that states that a geologic feature that cuts across another is younger than the one it cuts across.
Do plate tectonics still move the same way now as they did in the past?
Yes, this supports the idea of uniformitarianism