Earth's Layers
What is the top layer of the Earth called?
The crust
Over the last 200 million years, have India and Australia gotten closer together or farther apart?
Which two continents have coastlines that fit together the best?
Who proposed the theory of continental drift?
Alfred Wegener
What is the theory called in which species change over time by those with advantageous traits surviving and those with disadvantageous traits dying?
Natural Selection
What are the moving pieces on the surface of the Earth called?
Tectonic plates
What is it called when an oceanic plate is slipping under a continental plate?
Subduction
Based on rock evidence, North America is believed to have previously been connected to which other continent?
Europe OR Africa
What year was continental drift proposed?
1912
Which state of matter has the most energy?
Gas
What are the two layers of the core called?
Outer Core and Inner Core
When two continental (land) plates are moving toward each other, what landform is made?
Mountain
How does fossil evidence support the theory of continental drift?
When land animal or plant fossils of the SAME species are found on two continents not connected by land, that is good evidence that those continents USED TO BE connected, because land animals and plants cannot cross an ocean.
What was the name of the southern continents put together?
Gondwana
How many electrons are in a FULL valence shell?
8
How many tectonic plates are there on Earth (range)?
15-20
What two seafloor FEATURES are involved in seafloor spreading?
Mid-ocean ridges and trenches
How does rock evidence support the theory of continental drift?
Rocks cannot move, so if the same type of rocks are found on continents that are not next to each other, that is good evidence those continents were once connected in that location.
What force did Wegener INCORRECTLY think was moving the continents?
The tide.
What is the chemical formula for glucose? (for example, water's is H2O)
C6H12O6
Which layer of the Earth CAUSES the movement of continents?
The mantle
What is a convection current?
A circular current in liquid or air where hot stuff rises and cold stuff falls.
How does environmental evidence support the theory of continental drift?
When things that can only be found in hot climates are found somewhere near the poles in modern day that suggests that land used to be closer to the equator.
AND/OR
When things that can only be found in cold climates are found somewhere near the equator in modern day, that suggests that land used to be closer to the poles.
List at least one reason why other scientists did not accept continental drift at first.
Alfred Wegener was a meteorologist (weather scientist)
AND/OR
Alfred Wegener did not know how the continents were moving.
What is it called when the body parts of two organisms are structurally the same but have different functions?