Analyzing the Rock and Fossil Record
Fill in the blank:
Fossils are the remains or traces of ancient living ___________.
Things
What was the super continents named?
Pangea
Magma
Convergent boundaries move _______ each other
Towards
A glacier is a large mass of ______ that forms on land and moves slowly across Earth's surface.
Ice
How many principles of relative-age dating are there?
5
Index fossils are fossils that existed on Earth for a _________ length of time.
Short
What are the slabs of rock that move under the Earth called?
Plates
What are divergent boundaries?
Plates that are moving apart from each other
What are the two types of weathering?
Physical and chemical
The actual age of events
Absolute Age
What is continental drift?
When the continents drifted apart.
What is magma?
Molten rock below Earth's surface
True or False
Subduction is when one plate moves on top of another
False
True or False
Deposition is the picking up of eroded material
False
The principle that in undisturbed rock layers, the oldest rocks are on the bottom.
Superposition
The matching of rock layers or fossils exposed in one geographic region to similar fossils exposed in other geographic regions.
Correlation
Vast mountain ranges deep below the Earth's surface are called....
Mid-Ocean Ridges
What is a fault?
A break in Earth's crust along which movement occurs.
Any natural process that changes objects on Earth's surface over time is called...
Weathering
What is uniformitarianism
Geologic processes that occur today are similar to those that have occurred in the past.
A sediment layer used as a marker
Key Bed
What process states that new oceanic crust continuously forms along mid-ocean ridges and is destroyed at ocean trenches
Seafloor Spreading
Write the definition of impact craters
giant, circular depressions in Earth's surface
What is erosion?
The moving of weathered material, or sediment, from one location to another.