Show:
Rocks
Rocks Continued
Earth
Timescales
Scientists
100
The rock that forms by particles compacting and cementing together.
What is sedimentary?
100
It effects the size of crystals in an igneous rock.
What is cooling rate?
100
The Earth was formed...
What is 4.5 billion years ago?
100
A timescale using numbers to show how many years ago different events happened.
What is a numeric timescale?
100
The scientist that thought the Earth was completely molten rock before.
Who is Kelvin?
200
The features of a rock depend on.
What is how they form?
200
Remnant or trace of a living organism embedded in rock...
What is a fossil?
200
The layers of Earth going from outside to inside...
What is crust, mantle, outer core, and inner core?
200
A timescale showing how different parts of Earth's history compare to the whole.
What is a proportional timescale?
200
The scientist that thought the continents were all one before, but then drifted apart.
Who is Wegener?
300
The rock that forms by molten rock cooling and hardening.
What is igneous?
300
Minerals' characteristics.
What is structure, forms in nature, is a solid, and has a defenite chemical make-up?
300
All rocks contain minerals but not all minerals...
What is contain rocks?
300
The type of scale that starts at the present and goes back in time.
What is a geological timescale?
300
The scientist that found iridium in a rock layer and said the dinosaurs were extinct because of a meteor.
Who is Alvarez?
400
The type of rock changes due to heat and/or pressure.
What is metamorphic/igneous/sedimentary?
400
A remain or trace of an organism that has live for a short period of time, but in many places...
What is an index fossil?
400
This Earth process is NOT usually observed in a stream table...
What is weathering?
400
The era that looked the longest on the proportional timescale.
What is the Precambrian Era?
400
The scientist that used radiation to find Earth's age.
Who is Holmes?
500
The type of rock is made from a different rock changing due to heat and or pressure.
What is metamorphic?
500
They tell geologists that rock layers that contain the same type of index fossils are about the same age...
What is correlation?
500
Over 90% of species were killed in the...
What is the Great Extinction?
500
The era that looked the longest on the numerical timescale.
What is the Paleozoic Era?
500
The scientist who came up with uniformitarianism, which says, "the present is the key to the past."
Who is James Hutton?