🤩 Fun Facts
Name the two types of crust
Continental and oceanic
This principle helps scientists determine the relative age of rocks.
Law of superposition
Earth’s outer layer is broken into large pieces called this.
Tectonic Plates
This occurs when plates suddenly slip past each other.
Earthquake
Mountains often form when two of these collide.
Continental plates
Name the 3 types of plate boundaries
Convergent, divergent, transform
The law of superposition states that in undisturbed rock layers, the oldest layer is found here.
the bottom
This theory explains how Earth’s plates move. (Most current theory)
Theory of Plate tectonics
Most earthquakes occur along these.
Plate boundaries
This process forms new ocean crust at divergent boundaries.
Sea floor spreading/ocean basin formation
Name 2 types of evidence for continental drift
Fossil similarities between continents
Matching rock formations across continents
Climate evidence of past glacier activity
If a fossil is found in a deeper layer, it is generally this compared to fossils above it.
older
At this type of boundary, plates move away from each other.
divergent boundary
This boundary type is most associated with strong earthquakes but not volcanoes.
Transform Boundaries
Ocean basins grow larger because of this process.
Sea floor spreading
Who introduced the theory of continental drift
Alfred Wegener
The law of superposition tells us what about fossils?
The relative age
At this type of boundary, plates collide.
Convergent boundary
Volcanoes commonly form at these two types of boundaries.
Convergent and divergent
The Himalayas formed at what type of plate boundary
convergent
Who introduced the thoery of seafloor spreading
Harry Hess
If you find fossils of fish in the bottom layer what does that tell you about that area at that time?
It was under water
At this type of boundary, plates slide past each other.
Transform boundary
This ocean feature forms at divergent boundaries where magma rises.
Mid-ocean ridge
This type of boundary can create volcanic mountain ranges on land (also what type of zone does it cause)
Convergent boundary with a subduction zone