Earthquakes and volcanoes happen on this part of the earth
What is plate boundaries
100
Push pull waves travel through solids liquids and gases.
What is primary waves
100
Small volcanic bombs about the size of golf balls form from explosive eruptions, have a narrow base and steep sides
What is cinder cone volcanoes
100
One person thought of continental drift
What is Wagner
100
Process that uses strata of rocks to determine the age of an object
What is relative dating
200
Two of earths plates moving together
What is convergent boundaries
200
Side to side wave travel through solids only
What is secondary waves
200
Made from quiet lava flows. Lava covers a large area, creates a gently sloping dome shaped mountain
What is shield volcanoes
200
He thought of this how
What is continents fit together, same fossils found on each side of an ocean, tropic fossils found in Iceland and Greenland, evidence of glaciation in Australia
200
Process that uses half life to determine how old an object is
What is absolute dating
300
Cause the earths surface to move up and down, causes the most damage
What is surface waves
300
Built of alternative layers of rock particles and lava. Alternate between violent eruptions and quiet lava flows. Create a large cone shaped mountain
What is composite volcanoes
300
A rock is 3.2 billion years old how much percent of the original is left
What is 66 percent
300
Layers of rock that are ordered with youngest on top and oldest on the bottom
What is law of superposition
400
Two of earths plates slide next to each other
What is transform boundaries
400
Three kinds of waves in there short kinds
What is p waves, S waves and l waves
400
These are three parts of a volcano
What is a vent, a crater, and the caldera
400
A rock is 0.3 billion years old how much of the original percent is left
What is 99 percent
400
How old would a fault be
What is youngest
500
Three parts of what the earth is made of
What is the core, the mantle, and the crust
500
This invention measures the intensity of an earthquake
(Scale 1-10
What is the Richter scale
500
Volcanic dust has a certain thickness
What is 0.25 m
500
A rock is 0.8 billion year old how much percent is left of its original mass is left