CD Evidence
CD Evidence Continued
Continental Drift Theory
Heat Transfer
Heat Inside the Earth
100
The continents fitting together like puzzle pieces is an example of what kind of evidence?
Land Evidence
100
Tropical plants found in Norway is an example of what kind of evidence?
Climate evidence
100
What is continental drift theory?
The theory that all of the continents were once joined together
100
What are the 2 main types of heat transfer that happen inside of the Earth?
Conduction and Convection
100
What causes the tectonic plates to move? (Name WHAT and WHERE)
Convection currents in the Mantle/Asthenosphere
200
This picture is an example of what kind of evidence?
Climate evidence
200
This picture is an example of what kind of evidence?
Land evidence
200
Who created the theory of Continental Drift?
Alfred Wegener
200
DAILY DOUBLE
What NFL team does Ms. Gilleland support?
The Browns :(
200
What 2 layers of the Earth experience convection currents?
Mantle/asthenosphere and outer core
300
Lystrosaurus was a slow moving, plant eating reptile that existed over 250 million years ago. Fossils of Lystrosaurus have been found in the brown areas shown in the picture. How is this explained by the existence of Pangea?
Africa, Antarctica, and India used to be joined together into a single landmass
300
DAILY DOUBLE
Where did Ms. Gilleland go to college?
University of Pittsburgh
300
What is the name of the supercontinent?
Pangea
300
Convection is.........
Heat transfer through a liquid or gas
300
Describe what is happening near arrow #3
Material is heating up closest to the core
400
Why are glacial scrapings found in South Africa an example of Climate Evidence?
Glaciers cannot form in South Africa, therefore the land mass must have been closer to the south pole
400
This plant is found South Africa, Africa, India, Australia, and Antarctica despite not being able to make it across the ocean on its own
Glossopteris
400
What 3 categories of evidence were used to support the theory of Continental Drift?
Land evidence, fossil evidence, and climate evidence
400
Conduction is......
Heat transfer by touch/direct contact
400
Describe what is happening near arrow #2
More dense material is sinking towards the core
500
Why are fossils of Mesosaurus and Lystrosaurus an example of fossil evidence found on multiple continents?
Both reptiles cannot make their way across an ocean and survive
500
Why are matching mountain ranges and coal fields on multiple continent examples of land evidence of continental drift?
It is unlikely that mountain ranges/coal fields would form at the same time, be made of the same materials, AND line up. Continents must have been connected in the past
500
What are the 2 reasons why the theory was originally rejected?
1. Could not provide mechanism/force for how continents were moving
2. Geologists had to change how they thought mountains were made
500
Which object is LESS dense and why?
A, particles are farther apart/less particles in the same space
500
What 3 reasons cause the core of the Earth to have heat?
1. Leftover heat from Earth's formation
2. Radioactive decay/breakdown of elements in the core
3. Friction from material sliding past each other in convection currents