Fossils/Dinosaurs
What is the definition of a fossil?
The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock
What hypothesis did Alfred Wegener propose ?
Continental Drift
Which plate boundary type collide?
Convergent Boundaries
What Landforms are located on the Ring Of Fire?
Volcanoes
In geologic time what are Eras subdivided into
Periods
How do scientists know that dinosaurs exist?
Fossils
What does the theory of continental drift state?
All the continents were once one continent that broke up and drifted apart over hundreds of millions of years.
Which plate boundary type slides plates each?
Transform Boundary
New Crust Is Created At?
Mid-Ocean Ridges
Why would the same fossils be found in South America and Africa?
Plate tectonics
Why would fossils from different mammals and plants be in a desert area?
The area was once able to support different kinds of life
Why would fossils of a fish be on top of a mountain?
It shows that the mountain may have once been under water.
What are tectonic plates composed?
Oceanic and Continental Crust
What is it called when new oceanic crust is created at mid ocean ridges.
Sea-Floor Spreading
What are Tectonic plates named after?
The continents that they reside under.
What caused the mass extinction of dinosaurs
A meteorite struck the Earth.
Who is the scientist that developed the theory of Continental Drift?
Alfred Wegener
What do Continental-continental plate collisions create?
Mountains
Where do earthquakes and volcanic eruptions occur?
Along plate boundaries
When one plate sinks beneath another plate what is this called
Subduction
If viewing layers of different fossils, where would the oldest fossils be located ?
The bottom layer
What was this supercontinent called?
Pangea
Which plate boundary type move away each other?
Divergent Boundaries
What must happen within the Earth for a volcano to form?
Hot magma in the mantle must convect (convection current), and the pushing and pulling of tectonic plates.
What are convection currents?
The vertical movement of air currents due to temperature variations