lava is magma (molten rock) that rises to the surface and exits through volcanic areas.
100
an earth quake is caused by ?
What is colliding/moving tetonic plates
100
Scientists who study the forces that make and shape of the Earth are called ?
What is Geologists
200
Alfred wegener proposed what theory ?
What is continental drift
200
Magma is created by?
Tetonic plates under tremendous pressure
200
The scale used to messure earth quakes is called
What is a Richter scale
200
scientists rejected Wegener's theory because he could not?
What is explain what force pushed or pulled the continents
300
what is an oceanic ridge
A under water mountain range caused by convection currents which rise in the mantle as magma and emerge as lava, creating new crust upon cooling.
300
What volcanic eruption is a mixture of ash , hot gas and molten rock ?
What is pyroclastic flow?
300
why was the earth quake in Haiti so devastating?
because Haiti is on a fault line between two tetonic plates
300
What are three ways volcanoes can occur?
1) plates moving apart 2) plates moving together 3) at hot spots
400
How do the tetonic plates move?
What is convection
400
Mount Tamboura's eruption was said to be heard ?
What is over 2000 kilometers away
400
how is a hurricane formed?
What is warm air and warm water
400
What are the three types of heat transfer ?
What is conduction , radiation and convection
500
What is A break in Earth's crust where rocks have slipped past each other ?
What is a fault
500
an opening in the Earth that results from an unusually hot area that forms volcanoes when melted rock is forced upward and breaks through the crust ( this is called ?)
What is a hot spot
500
what did the earth quake in Haiti messure on the Richter scale?
What is 7.0
500
What is the major difference between the inner core and the outer core?
What is the inner core is molten rock and mineral while the outer core is solid