Can only go up from here
There are two main types of mountains __?__ and __?__
1) fold 2) fault
A _?_ boundary occurs where two plates come together, while a _?_ boundary occurs where two plates are moving away from each other.
1) convergent; 2) divergent
A _?_ is a machine that measures how much the surface of the Earth moves during an earthquake. The _?_ scale tells us the magnitude of an earthquake.
1) seismograph; 2) Richter
A volcano that is not erupting is called a ___?__ volcano. If it is erupting it is called a ___?__ volcano.
1) Dormant 2) Active
The scientist who proposed the theory of continental drift was __?__
Alfred Wegner
When a rock folds, it can do so in two main ways.
1)___?___ is the upward or top part of folded rock
2) ___?___ is the bottom part of the folded rock
1) Anticline 2) Syncline
_?_ boundaries occur where two tectonic plates slide against each other. When the stress builds up and the rocks break, a(n) _?_ is produced.
Transform or fault; earthquake
The _?_ is the point on the Earth's surface just above where an earthquake begins. The _?_ is the exact point where the rocks break.
1) epicenter; 2) focus
The Ring of Fire is where over 70% of the Earth's active volcanoes are located. This is because an oceanic plate and a continental plate are _?_. The oceanic plate dives beneath the continental plate in a process called _?_. This causes the oceanic plate to melt and produce molten rock called _?_
1) converging; 2) subduction; 3) magma
The supercontinent that contained all of our continents in one was known as __?__
1) Pangea
When the rock is squeezed from the sides, it can form into slabs that move up and over like shingles on a roof.
1) Thurst Faulting
Many geological features are a result of moving plate boundaries. Name the boundary/boundaries that cause each of the following: a) mid-oceanic ridges b) volcanoes c) mountains
a) diverging; b) converging, diverging AND hot spots; c) converging
We studied 3 types of earthquake waves. Collectively, these waves are called _?_ waves. The fastest are named _?_ waves. _?_ waves travel through the Earth more slowly than the fastest waves. _?_ waves do not originate from the focus; these waves cause the most damage to homes.
1) seismic; 2) p (or primary); 3) s (or secondary); 4) Surface
Hawaiian volcanos are unique in that they occur in the middle of a tectonic plate; this is known as a _____?_______.
1) hot spot
Three pieces of evidence used to help prove the theory of continental drift were...
1) fossil evidence 2) fit of the continents 3) geologic data 4) climate
______ mountains are jagged at the top.
______ mountains are more rounded on top
This is due to the amount of weathering and erosion that has occurred.
1) Younger 2) Older
___?___ boundaries produces new crust, this is called sea floor spreading.
1) Divergent
A minimum of _?_ seismic stations are necessary to find the epicenter of an earthquake. The seismic stations use the difference in arrival time of _?_ waves and _?_ waves in their calculations.
1) 3; 2) p; 3) s;
____?_____is the massive ash avalanche when a volcano erupts
1) pyroclastic flow
Approximately how far do scientists predict the continents move in one year?
1) 2.5 cm
1) Convergent 2) Continental
The Earth's crust is always ____?___ and it is floating on the ___?___
1) Moving 2) Mantle
When a ___?___ occurs under the water it can cause a huge wave that can cause severe damage, this wave is called a ___?___
1) Earthquake 2) Tsunami
Name 2 famous volcanos! (any ones you know of, does not need to be ones we talked about in class)
Answers will vary
What does Pangea mean?
" All Lands"