Tectonic plates consist of
Wegener thought that all the continents were once together in one large continent called
The global positioning system can map the rate of plate movement using
What kind of fault usually occurs because of tension?
What kind of fault usually occurs because of compression?
What kind of force can lead to mountains with sharp, jagged peaks?
What is the area where two tectonic plates meet called?
What type of boundary is formed when plates separate?
What type of boundary is formed when plates slide past one another?
According to the continental drift theory, a single, huge continent once existed named
The mantle is denser than the crust because it contains more
The core consists mainly of
Seismic waves travel through the Earth's layers at different speeds depending on the
Mountains formed by magma that reaches the Earth's surface are
The fact that similar fossils are found on both sides of the ocean is evidence of
Sets of deep cracks that form between two tectonic plates that are pulling away from each other are known as
What happens at mid-ocean ridges?
Which of the following is associated with transform boundaries?
What do scientists use the global positioning system for?
What is tension?
What can tectonic plates form when they converge?
What is the order of the layers of the Earth moving from the surface to the center?
Tectonic plates "float" on
Earthquakes produce
The giant continent that was composed of all the land on Earth was called
The southern portion of the giant supercontinent that broke apart about 180 million years ago was called
Magnetic reversals are preserved in
Magnetic reversals have helped to support
Mid-ocean ridges are the most common type of
The Global Positioning System depends on
The San Andreas fault is an example of a
Most earthquakes happen at the edges of
Which of the following is a type of body wave?
How much more ground motion does an earthquake with a magnitude of 6.0 have than one with a magnitude of 4.0?
Which state would you expect to have the highest probablility of experiencing an earthquake due to tectonic stress?
What kind of deformation leads to earthquakes?
Which of the following is NOT a type of fault that leads to an earthquake?
The epicenter of an earthquake is the point on the Earth's surface
The strength of an earthquake is determined by the
One way to forecast earthquakes in an area is to observe their past
Which of the following is NOT a type of technology used to construct earthquake resistant buildings?
Strike-slip faults are created by
What do seismologists use to measure earthquake strength?
What do seismologists use to measure the effect of an earthquake at a given location?
Which of the following would you expect to see during a non-explosive eruption?
Which of the following would you expect after an explosive eruption?
A shield volcano
A cinder cone volcano
A combination of explosive and non-explosive eruptions will create a
A large depression that forms when the magma chamber partially empties is a
Which of the following best describes subduction?
A dormant volcano
An active volcano
Where are volcanoes mist likely to form?
Molten rock deep underground often gathers in a
Lava that is very runny is probably
When you talk about the viscosity of lava, you are talking about
Which type of lava flows most like dripping wax?
Cool, stiff lava that forms jumbled heaps of sharp, chunks near the vent is called
Which type of pyroclastic material gets its name from a word that means "little stones"?
Pyroclastic material forms when
The three main types of volcanoes are
The depression created when the roof of a magma chamber collapses is called a
Rock begins to melt when
Most active volcanoes form
Volcanic activity is common along the Mid-Atlantic Ridge. This activity occurs at a
Which of the following is NOT considered when predicting volcanic eruptions?
What is a rift?
What does a tiltmeter measure?
Which kind of volcanic eruption is the most destructive?
Mt. Rainier and Mt. St. Helen's are
Mauna Kea is a
Magma forms deep in the Earth's crust and in the mantle where
Only about 5% of land volcanoes form
When infrared images show that an area is getting hotter, what is probably happening there?