Show:
The Moving Crust
Minerals
Erosion
Volcanoes
Geologic Time
100
What was the super continent called ?
Pangaea
100
What is a rock made from ?
Crystals
100
What is called a universal solvent ?
Water
100
What is the difference between lava and magma?
lava is outside and magma is inside the volcano.
100
Scientists use this type of radiometric dating to find out when recent events in the Earth's history occurred.
radiocarbon dating
200
CelciusWhat is the temprature of the upper mantle ?
1000 degrees Celcius
200
What is the softest mineral on moh's hardness scale ?
Talc
200
What causes the Parthenon in Greece to deteriorate?
acid rain
200
What are the openings at the top of the volcanoes called?
vents
200
What is the first life-forms era on the geologic time scale?
precambrian era
300
What is _________________evidence that shows the same animal fossils in different places?
continental drift
300
What is commen thing you put on food that is actually a mineral?
Salt
300
What carved the Grand Canyon?
water
300
What is the scientific term for volcanoes that are not active?
dormant
300
Sedimentary layers of rock is called ____________?
strata
400
What is the temperature of the outer core?
5500 degrees celcius
400
how many differant minerals are there _______
3000
400
What organisms break down rock over a long time?
lichen, tree roots, bacteria, fungi
400
What is the name of the volcano that erupted in Washington state in 1980?
Mount St. Helenes
400
What is the principle called that is used to infer the relative ages of different layers fo rock?
principle fo superposition
500
What is the temperature of the inner core?
6000 degrees celcius
500
when a rock is hit and breaks into smooth flat surface it is called what ?
clevage
500
What non man-made processes cause the physical environment to change?
volcanoes and earthquakes and weathering
500
What is the name of the biggest volcano on Mars?
Olympus Mons
500
What is the geological period during which the first human-like organisms appeared?
quaternary