Show:
The Scientific Method / Properties of Earth
Plate Tectonics
Earthquakes
Volcanoes
Rocks and Minerals
100
What are the imaginary lines that run horizontally across the Earth and measure distance north or south of the equator?
Latitude lines
100
The theory of continental drift was first proposed by who?
Alfred Wegener
100
What causes most earthquakes?
Plate movement
100
What do most volcanoes form from?
Subduction
100
What are the two most common resources mined in PA?
Coal, natural gas
200
What is the thin layer made of mostly rigid, rocky material called?
The crust
200
What was the super continent known as?
Pangaea
200
What is the Elastic rebound theory?
The bending of rocks and snapping back into place when stressed is released
200
What was the volcano Kilauea formed from?
Hot spots
200
What is the one of the hardest minerals?
A diamond
300
These imaginary lines run vertically across the Earth and measure distance east and west of the Prime Meridian?
Longitude lines
300
How many years ago did the super continent start separating?
200 million years ago
300
The point on the Earth's surface directly above where the earthquake occurred at is known as?
The epicenter
300
Mafic lava is different from felsic lava, why?
It's thinner and darker
300
Clastic sedimentary rocks may contain what?
Rock fragments
400
What are the coordinates of the North Pole?
0 degrees E, 90 degrees N
400
What is the formation of new seafloor and the movement of older seafloor outward?
Seafloor spreading
400
Waves produced by earthquakes are known as?
Seismic waves
400
Jagged mafic lava which has cooled quickly is known as?
aa
400
What dissolves away and forms sinkholes in PA?
Limestone
500
What is the layer made of almost entirely solid metals?
The inner core
500
What is the process of one plate being forced underneath another plate known as?
Subduction
500
Earthquakes will cause the least amount of damage to regions above?
Bedrock
500
What's the most explosive volcano?
Composite
500
What is one of the easiest ways to identify a mineral?
The color