3.1
Who came up with the theory of continental drift?
Alfred Wegener
What is the mountain range found on the floor of the Atlantic ocean called?
Mid-Atlantic Ridge
A _____ is part of the Earth’s surface that is much higher than the land around it.
Mountain
_________ are scientists who study early life forms by interpreting plant and animal fossils.
Paleontologists
What is the name given to layers of sediment used to help determine the age of fossils found?
Geologic Column
What was it called when all the continents were together?
Pangea
Plates that pull apart are called what?
Diverging plates
The upward, or top part of folded rock is called what?
anticline
______ ______are evidence of animal activity, like worm holes, footprints, and burrows
Trace Fossils
Geologists use certain knowledge about the earth to organize the Earth’s history into geologic time intervals called what?
Era's
The movement of continental land masses was called what?
Continental Drift
Plates that push together are called what?
Converging plates
syncline
Layers of sediment formed over millions of years are called what?
Strata
Name the 4 geological eras IN ORDER
Precambrian, Paleozoic, Mesozoic, Cenozoic.
Did people believe in continental drift a long time ago?
NO
What theory says: Earth's crust is broken up into plates, which are moving on the Earth's mantle.
The Theory of Plate Tectonics
The place where the crack or break occurs is called the _____ and is often below the surface of the Earth.
Fault
The body dissolves, leaving a ______, which is then filled with more sediment and hardens into rock, making a _______ of the original animal.
Mould, cast
Plates that slide past each other are called what?
Transform boundaries
What 3 pieces of evidence did the person use to describe continental drift?
Biological (Fossils)
Evidence from rocks
Geological (the weather)
The collision between the oceanic and continental plates where the ocean plate slides below the continental plate is called what?
Subduction
A ______ is the edge where plates meet.
Boundary
________ states that in undisturbed layers of rock, the oldest layers are always on the bottom and the youngest layers are always on the top.
Superposition
Give me 2 reason why The Theory of Plate Tectonics explains why earthquakes and volcanoes happen in the same general location?
1. They both occur at plate boundaries.
2. Volcanoes occur when earthquake leave cracks which are openings for magma to make its way to the surface.
3. Earthquakes occur when plates collide.