___________ is a type of rock that forms due to heat and/or pressure
What is Metamorphic?
100
the trace or remains of a prehistoric organism preserved in petrified form
What is a fossil?
100
___ _____ __________ is one of the biggest extinctions in our history that killed nearly everything on Earth, due to a meteor.
What is the Great Extinction?
100
a substance that forms in nature, is a solid, has a definite chemical makeup, and has a crystal structure
What are minerals?
100
fossils that aren't from that long ago and they located/found all over Earth. They provide evidence about prehistoric environments and the age of rock layers.
What are index fossils and why are they important to geologist?
200
a chemical that glues any material together to form a rock
What is a matrix?
200
What would make a better index fossil?
200
The Cenozoic Era is when the Neanderathal Men formed
What Era did humans begin to form?
200
the color of the powder left behind when the mineral is scraped across a surface
What is Streak?
200
_______ rocks will melt the fossil and ___________ rocks will crush and/or melt the fossil
Why are igneous and metamorphic rocks not good for finding fossils?
300
_______ is an igneous rock that is tan, black, and white and contains crystals and coarse-grains
What is Granite?
300
they provide the age of rock layers and they provide evidence about prehistoric environments.
What do index fossils provide to geologists?
300
Precambrian Time was the longest ___ in Earth's History
What is the longest Era in Earth's History
300
a scale telling you the hardness of a mineral based on what scratches it
What is the Mohs Hardness Scale?
300
the ____ _____ is an ongoing process that shows all types of rock that can be changed to any of those types of rocks. It has been going on ever since the beginning of Earth.
What is the rock cycle?
400
rock layers in the _____ ______ prove that is was an area that was once covered by an ocean that gradually grew deeper and then receded.
What do rock layers in the Grand Canyon prove?
400
they are marine organisms that formed during the Paleozoic Era and into the Mesozoic Era, and are index fossils
What are trilobites?
400
_________ became extinct because of a large meteor crashing into Earth, wiping everything out
Why did the dinosaurs become extinct?
400
is a solid in which the atoms are arranged in an orderly, repeating three-dimensional pattern
What is a crystal?
400
in __________ _________, we learned that Earth has existed for 4.5 Billion years, Earth's history are divided into eras and periods, first life on Earth began 3.5 billion years ago.
What have we learned about geological time lines so far?
500
_________ tend to settle when they get compacted and cemented together forming a sedimentary rock
How do sediments tend to settle?
500
seashell fossils can be found in this sedimentary rock formed near water
What fossils can be found in limestone?
500
it appeared at 4.0 billion years ago, so no lava was left
When did water appear on Earth?
500
a ________ is the tendency of a mineral to break into irregular pieces.
What is a fracture?
500
the _________ represented ancient seawater and _______ ___ into the water represents marine organisms blowing CO2 into the ancient seawater
In the limewater experiment what did the limewater and blowing air into the limewater represent?