methods using radioactive decay of the rock's particles
What is radiometric dating?
200
The value of this scale (how low/high does it go?)
What is 1 - 12?
200
Continued pressure from rising magma may produce a _______ before a volcano erupts.
What is a bulge?
200
Where an earthquake begins.
What is the epicentre or focus?
200
Upward or top part of folded rock.
What is anticline?
200
the type of fossil that can be used to date the surrounding rock is called an ________ fossil.
What is index fossil?
300
True or False: Iron scratches quartz
What is false?
300
This is used to measure the distance between waves.
What is the Richter Scale?
300
Irregular fold
What is asymmetrical fold?
300
in undisturbed rock, the oldest layers are on the bottom: the youngest are on the top
What is the principle of superposition?
400
Which of the following is the hardest:
quartz, feldspar, calcite, diamond
What is diamond?
400
Magma that cools slowly forms _______ rock.
What is intrusive igneous?
400
Wegener proposed that all the continents were once joined together in a supercontinent he called....
What is Pangaea?
400
Vertical fault where the rock is pushed up
What is a reverse fault?
500
Winnie inherited a ring from her grandfather. She does not know the name of the purple gem in the middle of the ring. She finds that it has a hardness of 7. What could it be? Ruby, amethyst, flourite, diamond?
What is amethyst?
500
Molten material deep inside the Earth that igneous rocks form from is called.....
What is magma?
500
Rocks that slide past each other and lock in place can break apart when the pressure becomes too great. The area where they break and move is called a....
What is fault or transform boundary?
500
A ______ zone is an area where one enormous piece of rock is pushed under another.