Earth's Layers
How many layers make up Earth?
Five
Tectonic plates that are moving apart are called what?
Divergent
What are three organisms that can be preserved as a fossil?
Plants, insects, animals
Traces of preserved remains of plants, animals, and other organisms are called?
Fossils
Which layer is the hottest?
They come together or collide
Where are fossils preserved?
In sediment
This type of dating gives us an estimate or guess of how old rock layers may be.
Relative Dating
This layer is made up of molten lava.
Outer Core
Transform plates cause what geological process?
Earthquakes
What type of rock are fossils found in?
The Law of Superposition tells us that the ________ rocks are on the bottom and the _________ rocks are on top.
oldest, newest
What are the two types of crust?
Oceanic and Continental
What causes plate tectonics to move?
The mantle moving
How old must an organism be to be considered a fossil?
10,000 years old
Absolute dating tells us what about a rock or fossil?
It's exact age
What is another word for the mantle?
Asthenosphere or Mesosphere
What is subduction movement?
One plate goes under the other
Name three things that fossils can tell us about life in the past.
Size, what they ate, how they reproduced, the type of organism
Where do humans evolve along the Geologic Time Scale Chart?
At the top