Diagrams
Go to this link and fill out 1, 2, 3, and 4:
1. Crust
2. Lithosphere
3. Asthenosphere
4. Lower Mantle
What was Alfred Wegener's theory and the main point of his theory?
Theory: continental drift
Main Point of Theory: hypothesis that the continents slowly move across Earth’s surface
What is an example of direct evidence used by geologists to learn about Earth's interior?
Rock samples from Earth's interior
What does a divergent boundary do?
Pulls apart
A dense sphere of solid iron and nickel at the center of Earth
What is the inner core?
Go to this link and fill out all of the 6 blanks:
1. Crust
2. Lithosphere
3. Asthenosphere
4. Lower Mantle
5. Outer Core
6. Inner Core
What was Harry Hess's theory and the main point of his theory?
Theory: sea-floor spreading
Main Point of Theory: the process by which molten material adds new oceanic crust to the ocean floor thereby spreading the sea floor
What rock types comprise continental crust and oceanic crust?
Continental crust: Granite
Oceanic crust: Basalt
What does a convergent boundary do?
Comes together or collides together
The force pushing on a surface divided by the area of that surface
What is pressure?
Go to this link and find out what blanks go in the A:
Divergent boundary, mid-ocean ridge
What was J Tuzo Wilson's theory and the main point of his theory?
Theory: plate tectonics
Main Point of Theory: the theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle
What is an example of indirect evidence used by geologists to learn about Earth's interior?
Seismic waves
What does a transform boundary do?
Slides past horizontally in opposite directions
An event that causes a magnetic field to reverse direction
What is magnetic reversal?
Go to this link and find out what blanks go in the C:
Convergent boundary, deep-ocean trench
What is the outer core's difference?
Molten iron and nickel; forms Earth's magnetic field
Name 1 of the three causes of convection currents.
One of these:
Gravity, Density, and Temperature or heating and cooling
What is radiation heat transfer?
Transfer of energy through space with no direct contact between heat source and an object
A deep valley that forms where two plates move apart
What is a rift valley?
Go to this link and find out what blanks go in the D and B:
Rift valley, sea-floor spreading
What is the inner core's difference?
Solid iron and nickel; extreme pressure keeps solid
Name 2 of the three causes of convection currents.
Two of these:
Gravity, Density, and Temperature or heating and cooling
What is conduction heat transfer? What is convection heat transfer?
Conduction: Transfer of energy with direct contact between objects that are touching
Convection: Transfer of energy by the movement of a fluid
A plate boundary where two plates move past each other in opposite directions
What is a transform plate boundary?