Earth's Layers
Boundaries
Continental Drift
Landforms
Graphs/Random
100
Which layer is a solid sphere of iron and nickel?
The Inner Core
100
Which type of stress does a divergent boundary experience?
Tension (pulled apart)
100
Who first proposed the theory of continental drift?
Alfred Wegener
100
What is a low area of earth’s surface that is often formed of flat - lying sediments?
A Plain
100
Which Graph best shows percentages or parts of a whole?
Pie graph (circle graph)
200
What changes and how as we go deeper into the Earth's layers?
The temperature and pressure increase as you go deeper.
200
What is the result of two continental crust plates converging?
Mountains are formed.
200
What are tectonic plates?
Sections of the lithosphere that move on top of the fluid asthenosphere; composed of Earth’s crust and the hard top layer of the mantle.
200
The mesosphere fuels material for what landform?
Volcanoes
200
What kind of graph did we use to represent the profile of the oceanic crust between two continents, and why?
A line graph, which allowed us to see the different depths between two continents.
300
What are the two types of crust, and what are they made of?
Oceanic crust - Basalt
Continental crust - Granite
300
What are convection currents?
Found in the asthenosphere layer of Earth. Cooler, more dense material sinks, hotter, less dense rises, setting up a cycle These convection currents are thought to be driven by Slab Pull and Ridge Push
300
What were the three pieces of evidence that Alfred Wegener presented to support his theory?
Land masses -mountain ranges in Europe and North America match up
Fossils -plants and animals- same fossils on different continents
Paleoclimatic -fossils of tropical plants, 300 million years old, on icy islands and glacier evidence in warm climate
300
What is an often fan-shaped deposit of Earth materials at the mouth of a stream or river?
A Delta
300
What is the ring of fire?
The volcano and earthquake epicenters that seemingly circle the Pacific Ocean.
400
Which sphere is a partially molten layer of the mantle that can flow/move slowly?
Asthenosphere
400
What happens at a subduction zone and why?
An area when two plates meet and one slides under the other because it's more dense.
400
Who later found what Alfred Wegener's theory was missing, and what evidence was it?
Henry Hess:
Pillow Lavas
Magnetic Striping from spreading centers
Symmetrical Aging from spreading centers
400
What two types of landforms are created at divergent boundaries where there are two oceanic crusts and when there are two continental crusts?
O to O: a ridge
C to C: a rift
400
What are island arcs and how are they formed?
A series of volcanic islands formed by oceanic crust converging.
500
Why is oceanic crust younger than continental crust?
Oceanic crust is more consistently being recycled because it subducts into the mantle to become pillowing lava, which reshapes the oceanic crust.
500
Explain the concept of seafloor spreading.
Two plates are pulling apart, new molten material rises from the mantle to make a new ocean floor.
500
Which tectonic plate resides between the South American and Pacific plate?
The Nazca Plate
500
Why do we see Earthquakes around the mid-ocean ridges?
Because most earthquakes happen at the boundary of tectonic plates.
500
Voiced by Maya Hawke, this frantic new character enters Riley’s mind alongside Envy and Ennui in a record-breaking 2024 Disney animated sequel, sparking massive cultural conversations among Generation Alpha about mental health.
Anxiety