What is the remnants or trace of a plant or animal embedded in a rock
100
Rocks that can be changed by heat and pressure
What is all types of rocks. (igneous,metamorphic and sedimentary rock)
100
Grand canyon formed
What is 10 million years ago
100
mantle?
What is a huge layer that lies between earths crust and core
100
Type of rock that forms from particles that pile up over time
What is sedimentary
200
An index fossil is
What is a fossil of a organism that has lived for a short period of time in many places around the world. (short period of time as in a few million years)
200
the features of the rock depend on?
What is where they formed and what they are made of
200
Earth formed
What is 4.5 billion years ago
200
to correalate is
What is to find relationships between rock layers from two or more locations
200
Layer of earth that has the most extreme heat and pressure
What is inner core
300
the kinds of rock that fosills mainly found in what type of rock
What is sedimentary rock
300
A rock fizzes when it contains what
What is calcite or calcium carbonate
300
A time scale that shows how many years ago different events happened
What is numeric time scale
300
A proportional time scale
What is different parts of earths history compared to a whole
300
Humans appeared on earth
What is 200 thousand years ago
400
Why aren't fosills found in igneous or metamorphic rock?
What is they would be destroyed by the heat and pressure or melted
400
the types of rock form at the earths surface are? hint:2 rocks
What is igneous and sedimentary rock
400
The longest era
What is paleozoic era
400
Differential erosion
What is landforms shaped like steps or cliffs. This happens when a mountain or plateau are made of both soft weak rock and hard strong rock.
400
Trilobites appeared when
What is 500 thousand years ago
500
why are index fosills important to geologists?
What is important to geologists because if a geologist found an index fosill in a rock layer, the age is the same as the other layers with the same index fosill.
500
igneous rock that contains crystals formed from what?
What is magma trapped deep beneath earths surface
500
The layers of the earth
What is crust,mantle,inner core, and outer core
500
Index fossils
What is fossils that have lived for a short period of time but in many places around the world