| A | B |
|---|
| Theory that states that the continents have drifted apart over millions of years because the plates that they are on are constantly moving | Alfred Wegener's Continental Drift Theory |
| Continents are like puzzle pieces, fossils are found on continents that would not have been able to live there, evidence of glaciers in S. Africa | Evidence used to support Wegner's theory |
| Supercontinent when the land masses were joined | Pangaea |
| large, slabs of rock found in the crust | tectonic plates |
| When two tectonic plates collide | folded mountains are formed |
| When masses of rock move up or down a fault and push up the Earth | fault-block mountains are formed |
| When the surface is lifted by magma | dome mountains are formed |
| When one plate goes under another plate and begins to melt due to heat and pressure | volcanoes are formed |
| Dome mountains occur when magma pushes up the surface of the earth, volcanoes form when magma erupts from the earth's surface | the difference between dome mts. and volcanoes |
| When a volcano erupts constantly it is called | an active volcano |
| When a volcano erupts on a regular basis | an intermittent volcano |
| When a volcano hasn't erupted for awhile but could in the near future it is called | a dormant volcano |
| When a volcano has not had any eruptions in recorded history it is called | an extinct volcano |
| A type of volcano that has layers of cinders and steep slopes | cinder cone volcano |
| a type of volcano that has a build up of lava and gentle slopes | shield volcano |
| a type of volcano formed by explosive eruptions and then quieter eruptions creating steep slopes at the top and gentle slopes at the bottom | composite cone volcano |
| sulfur, rubber, hot springs, fossilized remains are found in volcanic ash | Some benefits of volcanoes |
| When two plates move up and down along faults and one passes over another, the earth vibrates and releases energy | what happens to plates during an earthquake |
| a scale that measures strength of an earthquake on a scale of 1-10. Each number represents 10 times greater force than the previous number | Richter Scale |
| great heat and pressure builds up and causes the plates to move in the crust | what happens to plates during an earthquake |
| a crack in the earth's crust | a fault |
| plates can move along it to create an earthquake | what happens along a fault |
| the Pacific Plate Region where many volcanoes exist due to two plates meeting | Ring of Fire |
| Located in the Pacific Ocean along North and South America | Ring of Fire |
