Boundaries
What type of boundary has the most earthquakes?
What is a transform boundary.
What kind of Volcanoes form at Oceanic-Oceanic plate boundaries?
What are Island Arc Volcanoes.
In what layer do convection currents take place?
What is the mantle.
Which layer helps create the Earth's Magnetic Field?
What is the outer core.
What 3 types of land forms are created at a convergent boundary?
What are volcanoes, mountains, and trenches.
What type of boundary would you expect to find a mid ocean ridge along?
What is a divergent boundary.
What Cascade Range volcano erupted in 1980 and killed 57 people and resulted in about $1.2 billion in damages?
Mount St. Helens
What is the type of heat transfer that gets used for plate tectonics?
What is convection.
Which layer of the Earth is a liquid ball of molten metal?
What is the outer core.
What evidence was found to prove Pangea.
Evidence from land features such as mountain ranges lining up on continents when pieced together
Evidence from fossils, or traces of ancient organisms preserved in rock, show the same animals and plants occurred on the now separated land masses
Evidence from climate change where Wegener showed scratches on rocks make from glaciers in places with much more mild climates today
What type of boundary collides and creates a trench?
What is a convergent boundary.
What is a large circular depression that forms when the magma chamber below a volcano partially empties, causing the ground above it to sink?
A caldera.
Through what process does the lithosphere get pushed or pulled?
What are convection currents.
Name the two main types of evidence that geologists have used to learn about the Earth's Interior.
What are seismic waves and rock samples.
When was the theory of sea floor spreading created?
What is 1960.
What is the area called that surrounds the Pacific Ocean?
What is the Ring of Fire.
What natural hazard caused the global drop in temperature and reduced sunlight in 1816 that resulted in a decrease in agricultural production?
An extremely large volcanic explosion in Indonesia know as Mt. Tambora.
What are the three types of heat transfer?
What are conduction, radiation, and convection.
The mantle is divided into how many layers?
What is 3.
What happened when the theory of continental drift was presented?
What is laughter.
What is it called when one plates sinks under another?
What is a subduction zone.
How do scientists use computers for in order to locate the epicenter of earthquakes?
They perform triangulations based on data from seismograph stations
Explain how a convection current work.
Answers will vary.
Roughly how thick is the crust?
What is 40 kilometers.
What pieces of evidence were found to prove sea floor spreading?
molten material - pillow-shaped rocks formed when molten material erupts and hardens quickly
magnetic stripes – rocks that lie in a pattern showing a record of reversals of Earth’s magnetic field
drilling samples - reveal that the farther from a ridge the rocks were taken, the older they were