Show:
Earth's Interior
Plate Boundaries
Continental Drift
Sea-Floor Spreading
Miscellaneous
100
The outer layer made of thin hard rock
What is the crust
100
This light colored rock is the primary type of rock found in continental crust
What is granite
100
German scientist who hypothesized that Earth's continents were once all joined together
Who is Alfred Wegener
100
A device that bounces sound waves off underwater objects and then records the echoes of these sound waves.
What is sonar
100
This layer of Earth is made up partly of crust and partly of mantle material
What is the lithosphere
200
Liquid layer beneath the mantle
What is the outer core
200
The process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle
What is subduction
200
Any trace of an ancient organism that has been preserved in rock
What is a fossil
200
During sea-floor spreading, magma rises from the mantle creating these
What are mid ocean ridges
200
This dark colored rock is the primary type of rock found in oceanic crust
What is basalt
300
Rigid plates of the lithosphere float and move on this plastic-like layer
What is the asthenosphere
300
This type of plate boundary is responsible for ocean ridge and rift formations
What is a divergent boundary
300
Idea that continents slowly moved over Earth's surface
What is continental drift theory
300
He suggested the process of sea-floor spreading which continually adds new material to the ocean floor.
Who is Harry Hess or Robert Dietz
300
Geologists think that the movement of Earth's plates is caused by
What are convection currents
400
Holes drilled into the Earth provide direct evidence in the form of this
What are rock samples
400
San Andres is an example of this type of plate boundary
What is a transform boundary
400
Wegner noticed this land feature when he pieced together maps of Africa and South America.
What are mountain ranges that line up.
400
Earth's magnetic field results from movements in this
What is the outer core
400
Heat transfer within a material or between materials that are touching
What is conduction
500
Geologist obtain indirect evidence about Earth's interior by
What are seismic waves
500
These occur at subduction zones beneath deep ocean trenches
What are volcanoes
500
Evidence from different scientific fields that support continental drift Three answers
What are land features, fossils, and evidence of climate change
500
Evidence that supports the theory of sea-floor spreading (3 answers)
What are molten material, magnetic stripes in the ocean floor, and the age of rocks
500
A change in temperature affects this
What is density