Earth’s Layers
What do scientist know about Earth’s interior?
They observe energy from earthquakes and explosions.
Reason- Energy moves slower through less dense materials and liquids. Energy moves faster through more dense materials and solids.
Who proposed the theory of continental drift and when did they propose it?
Alfred Wegner in the early 1900.
What is erosion?
Erosion is the action of picking and moving materials
What do scientists do with Ice Cores?
Scientists drill cores of ice from glaciers and the Antarctic ice cap. This allows them to get information about Earth during the last 800,000 year hoping to get to 1.5 million years.
How do you make a Jeffery?
You can make your very own Jeffery at home with a crafting table. Use the following items - Wood, Paper, Steak, Organs, and a Tripod.
What are the layers of mantle?
Lithosphere - Earth’s crust and the top of the mantle.
Asthenosphere - Hotter and softer rock in the upper mantle, just below the lithosphere
What was the evidence of continental drift?
Climate and geology.
climate-evidence of tropical plants in areas that are now cold.
geology-rock formations on different continents the same.
What is the 4 agents of erosion?
Water, Wind, Ice, and Gravity
What is an Extrusion?
An extrusion is when magma cools on the surface of the earth.
Who is Jeffery’s camera man?
Larry
What are the two kinds of waves?
P-waves- fastest, longitudinal, can go through solid and liquid.
S-waves – 2nd wave, transverse, can only go through solid.
What is the theory of plate tectonics?
Earth’s lithosphere is broken into moving slabs that are moving because of the mantle.
What is Abrasion?
Abrasion is sand grains wearing away surface of rocks, buildings, like a piece of sandpaper. This can form unusual landforms when it wears away weaker rock.
What is an Intrusion?
An intrusion is when magma is forced into older rock layers and cools.
Who is Jeffery’s co-host?
Timothy
What is a seismograph?
A seismograph is an instrument used to ground movement.
What occurs at divergent boundaries?
Mid Ocean ridge, rift Valley, New crust, and earthquakes.
What is Deflation?
Deflation is the process of wind carrying away loose sediment. It mainly happens in desert regions. Deflation blows sand away, leaving pebbles that makes a hard stony surface called a desert pavement.
What are Faults?
Faults are a BREAK in the Earth’s crust due to tectonic plates colliding and rock layers being squeezed together.
When did Jeffery make his first appearance?
In a group project with Avri, Jacob, a nobody, and William Dallas Platero Davenport III
How many seismographs are needed to triangulate the focus of an earthquake?
3
What are hotspots?
Hot spots are places that heated rock rises to make a volcano.
What is a Wind Deposit?
Wind deposits are when wind slows down and drops sediments. Often leaves behind sand called dunes.
What is an Unconformity?
An unconformity is when new rock layers meet a much older rock surface beneath.
Is Jeffery okay?
No, he’s currently in a coma due to the tape on his back slowly losing its adhesive functions.