What was Alfred Wegener's hypothesis about the continents
All the continents were once joined together in a single landmass and have since drifted apart
100
What are divergent boundaries
boundaries that pull apart from each other
100
What is Identify
to recognize or acknowledge
200
what is subduction
When oceanic crust sinks down beneath the trench into the mantle
200
What is direct evidence
Evidence you can touch and see
200
What evidence supported Wegener's hypothesis of continental drifting
land features, fossils, climate change
200
What are convergent boundaries
boundaries that push into each other
200
What is Describe
to give a description or to tell what something looked like, sounded like, smelled like, etc
300
What are 3 types of evidence of sea floor spreading
1. eruptions of molten material
2. magnetic strips in the rock
3. ages of the rocks themselves
300
What is indirect evidence
Clues about something that cannot be seen directly
300
What did Wegener name his discovery of continental drifting
Pangaea
300
What are transform boundaries
boundaries that slide past each other
300
What is Rotation
Earth's movement in a 24 hour period
400
What is the process of sea floor spreading
Sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added. as a result, the ocean floors move like conveyor belts, carrying continents along with them.
400
What happens to the temperature of the Earth as you descend into the Earth's layers
Temperature increases
400
Why did scientists reject Wegener's hypothesis of continental drifting
Wegener could not provide a satisfactory explanation for the force that pushes or pulls the continents
400
What are plates
sections on Earth's crust as a result of the lithosphere being cracked
400
What is Orbit
Earth's path around the sun
500
What are magnetic strips
Magnetic strips in the rock of the ocean floor show the direction of Earth's magnetic field at the time the rock hardened
500
What are the layers of the Earth
Inner core, outer core, mantle, crust
500
What is Wegener's hypothesis for how mountains were created
Continental plates pushing against each other
500
What is the theory of plate tectonics
the theory of plate tectonics explains the formation, movement, and subduction of Earth's plates
500
What is Inference
to be able to understand what is happening or being said without the author or person stating it directly