Show:
General earth
Earth's layers
Rock cycle
Plate tectonics
Astronomy
100
Two main sources of energy for earth
What are The sun and Earth's interior
100
Law that states younger layers are on top of older layers.
What is the law of superposition
100
Lava that cools on the earth's surface
What is igneous
100
A place on earth where earthquakes may occur
What is a fault
100
Large stellar distances are measured with this
What is a light-year
200
And educated guess
What is a theory
200
When 50% of an isotope decays into an other element this is called
What is half-life
200
After rock has been cemented and compacted it can become
What is sedimentary rock
200
The distance in time between the p and s waves can tell us what
What is the distance to the epicenter
200
The earth movement responsible for night and day
What is rotation
300
An idea that has been tested by many scientist and may still be developing
What is theory
300
The current accepted age of the earth
What is 4.6 billion yrs
300
Rock that has been heated and squeezed until it changes form
What is metamorphic rock
300
Name two types of plate boundaries
What are transverse, convergent and divergent
300
Seasons are caused by a combination of these two earth phenomenone
What are earth's tilt and earth's revolution around the sun
400
Solar and wind energy are examples of
What are renewable energies
400
These are evidence of past life
What are fossils
400
Local geology is created mainly with this process
What is volcanism
400
Often these form on the crust when a subduction zone is present
What are volcanoes
400
90% of stars in the "H-R diagram" are
What is main-sequence stars
500
Name four of earth's "spheres"
What are hydrosphere,atmpshere, geosphere and biosphere
500
This principle states that physical phenomenon that occur today also occured in the past.
What is uniformitarianism
500
When magma hardens and cools under earths surface it forms
What is intrusive igneous rock
500
Name three types of volcanoes
What are sheild, cinder cone and composite volcanoes
500
What observed phenomenone shows that the universe is expanding?
What is the red-shift