Show:
17.1 Earth's Interior
17.2 Earthquakes & Volcanoes
17.3 Minerals & Rocks
17.4 Weathering & Erosion
Short Answer
100
This is where the continental crust is the deepest.
What is under mountains?
100
This is how the magnitude of earthquakes is measured.
What is the Richter scale?
100
This is a substance that has a chemical formula, occurs naturally, and has a characteristic internal structure.
What is a mineral?
100
This type of weathering does not alter the chemical composition of the rock.
What is physical weathering?
100
This is the theory that describes the motion of the Earth's plates.
What is plate tectonics?
200
This is how oceanic crust compares to continental crust. (Think: thickness & density)
What is thinner and more dense?
200
This is the minimum number of seismograph stations necessary to determine the location of an earthquake's epicenter.
What is three?
200
This is the only type of rock that can contain fossils.
What is sedimentary?
200
This is a common kind of mechanical weathering in which ice breaks down rocks.
What is frost wedging?
200
This is the type of plate boundary that occurs where you find subduction zones.
What is convergent?
300
This part of the Earth's interior is hot and solid, but is surrounded by a hot and liquid layer.
What is the inner core?
300
This is what the magma released from volcanoes is made of.
What is melted rock the mantle and crust?
300
Of the following, this is the only one that is a mineral: granite, shale, marble, and quartz.
What is quartz?
300
Rain water is naturally a mild one of these. Pollution makes this problem much worse.
What is acid?
300
This is one cause of earthquakes.
What is rocks moving past each other at plate boundaries?
400
This is where the convection currents that result in the movement of the tectonic plates occur.
What is the asthenosphere?
400
This is what a cinder cone looks like and how it's formed.
What is a short cone caused by violent eruptions?
400
Limestone can be metamorphosed into this.
What is marble?
400
This is the process in which sediment is laid down.
What is deposition?
400
This is the relationship between the focus of the earthquake and its epicenter.
What is the epicenter is directly above the focus?
500
This is where you find rift valleys. (Hint: these are also called mid-ocean ridges.)
What is at divergent plate boundaries?
500
This type of volcano is made of layers of cinders and lava.
What is a composite volcano?
500
This principle tells scientists the relative age of rocks.
What is the principle of superposition?
500
Carbonic acid dissolved in water causes this type of weathering.
What is chemical weathering?
500
This is the main difference between extrusive and intrusive igneous rocks.
What is intrusive rocks cool slower and have larger crystals than extrusive igneous rocks?