Rock Strata
What is the law of superposition?
When the older rocks are at the bottom of rock layers and younger rocks are at the top.
Name the 4 layers of Earth in order.
Crust, Mantle, Outer Core, Inner Core.
Which Plate boundary commonly causes earthquakes?
Transform boundary
Who theorized Pangea and what was the name of the theory?
Alfred Wegner and Continental Drift Theory
What was the name our October song?
What is the name of dead organisms that are buried in the ground and preserved?
Fossils
How do we know that the Earth's Inner Core is solid?
Through Earthquake Evidence
What plate boundary is our Mid Ocean Ridge?
Divergent
Name two pieces of evidence Alfred Wegner used to start proving Continental Drift Theory?
Geology (rocks and Land). Fossils (same fossils separated by an ocean). Climate (similar climate zones in different continents)
What device did Harry Hess use to discover Sea Floor Spreading?
Sonar
What is an intrusion?
When magma goes into a set of rock layers, causing a brand new layer!
What is the movement that happens in the mantle that is caused by heat?
Convection
Explain the process of Seafloor Spreading.
What did Harry Hess discover and how did it support Continental Drift Theory?
Sea floor spreading, and the new creation of sea floor made the continents move over time.
What is the heat source for convection in the Mantle?
The Outer Core
What is the difference between magma and lava?
Magma is inside the ground, Lava is when it is exposed to oxygen.
What is the inner core made up of?
Iron and Nickel
What type of boundary causes mountains and volcanoes?
Convergent
Was Alfred Wegner believed by the science community when he theorized Continental Drift Theory?
No
Why is our inner core solid?
From the pressures of the other layers of Earth.
What 2 pieces of evidence did we use to align the sedimentary strata, and connect Pangea?
Fossil Evidence and Rock Strata Evidence
What is the temperature of the Mantle?
1,000 to 3,000 degrees Celsius
In the Tim and Moby video, what did they compare the speed of plate movement to?
How fast your finger nails grow
About how many year ago was Pangea present on Earth?
250 million years ago
What rock makes up the Continental Crust? And what rock makes up Oceanic Crust?
Granite and Basalt