Earth's Layers
What layer do we stand on?
Crust
Who was the scientist that hypothesized Continental Drift?
Alfred Wegener
Which plate boundary is when plates scrap across each other?
Transform
When two oceanic plates meet, which one subducts?
The older and denser one.
Overall, what causes events such as earthquakes, volcanoes, and mountains?
The plate movement.
Which layer controls Earth's Magnetic Fields?
Outer Core
Why was Wegener's hypothesis rejected by so many?
He could not identify the cause of continental drift.
Which plate boundary is where NEW CRUST is formed?
Divergent
In relation to the Mid Atlantic Ridge, where is the oldest crust?
Far away from the center.
A few centimeters a year.
Which layer is all liquid?
The outer core
Give three types of evidence Wegener used to prove continental drift:
1. Fossils
2. Mountains
3. Glacier scrapings.
4. Look like they fit.
The Mid Atlantic Ridge is what type of boundary?
Divergent
When a continental and oceanic plate hit, which one sinks?
oceanic
What are the two types of seismic waves that help us identify the Earth's Interior?
P waves and S waves
What does the heat inside the Earth's interior do that is important to continental drift?
Drives convection in the mantle?
What is Ms. Park's favorite show?
The Simpsons
What forms when two continental plates collide?
Mountains form
What One Direction Member was Ms. Park's favorite in Eighth grade?
Harry Styles
What types of material can S waves go through?
What types of material can P waves go through?
S waves - solids
P waves - both
Which layer are our tectonic plates on (specific layer!!)?
The lithosphere
Name a fossil or mountain range that helped prove Wegener's theory, and describe how it was evidence.
Various answers
When two plates scrape past each other, what natural disaster occurs?
Earthquakes
What forms when the plate subducts under another?
A trench
What three types of evidence tell us seafloor spreading is occuring?
1. Pillow Rocks
2. Magnetic Stripes
3. Age of rocks