Volcanoes Plates Earthquakes Flashcards
The major movement of the plates and description of plate boundaries of the Earth are
Convergent Divergent Transform
Tectonic plates float on the
Asthenosphere
Convergent movement of two plates often results in one plate pushing under another T F
True
There are areas of liquid rock under the middle of plates, resulting in volcanic activity and chains of islands T F
True
Scientists think continental plates move because of circulating liquid rock below the plates T F
True
What are the results of plate tectonics
Volcanic Activity Earthquakes Energy Sources for Man
The slabs of rock known as continents make up the complete lithosphere T F
False
The original land mass of the Earth before continents was called
Pangaea
The concept that Earth’s upper layer or lithosphere is divided into large quite rigid segments which float over the more dense upper mantle is termed
Plate Tectonics
Plate boundaries where two plates are moving apart from one another and new plate material is being formed as molten rock rises to fill the gap between them are called
Ridges
The plates of the Earth move because of
Convection currents in the mantle
The strongest shock waves of an earthquake occur close to what is called the epicenter a point on the surface of the crust directly above what is called the
Focus
An earthquakes magnitude is measured with a tool that records the size of seismic waves called a
Seismograph
Most earthquakes occur
Along plate boundaries
Earthquakes and volcanoes share which of the following in common
They both occur along plate boundaries They both can involve explosive movement They are both related to plate tectonic activity
Volcanoes can cause
Global Cooling Earthquakes and the Release of Poisonous Gases
Dust and ash from a volcanic eruption can be carried
10s 100s or even 1000s of miles
Scientists can predict volcanic eruptions
False