By Mildred Jeopardy Page 5 Page 10 Page

By Mildred

Jeopardy Page 5 Page 10 Page 11 $100 $200 $300 $400 $500 Tectonics 1 Tectonics 2 $100 $200 $300 $400 $500

What kind of boundary exists between the Pacific and Indian-Australian plates? A convergent boundary

What kind of geological feature is usually located where two oceanic plates converge? A trench

The Hawaiian Islands chain was formed as the pacific plate moved over a. . . Hot Spot

Along which kind of boundary is new sea floor being added? A divergent boundary

What kind of boundary exists along the California coast? A transform boundary

At what depth in the earth is the interface between the asthenosphere and the stiffer mantle? About 600 -700 km

What is the probable composition of the inner core? Iron and nickel

What is the pressure at a depth of 3600 km in the earth? 2 million atmospheres

DAILY DOUBLE

About how thick is the earth's outer core? About 2200 km

What is the melting point of the rock at a depth of 1000 km? 4000 - 4100 degrees C

How long will it take P waves to travel to a seismic station that is 4000 km from the epicenter? 7 minutes

It takes S waves 13 minutes to travel from an epicenter to a seismic station. How long will it take P waves to reach the same station? 7 minutes 20 seconds

A seismic station is 7000 km from an epicenter. How long after P waves arrive will S waves arrive? 8 minutes 40 seconds

P waves arrive at a seismic station at 1: 22: 00. S waves from the same earthquake arrive at 1: 26: 20. What is the distance from the epicenter to the seismic station? 2800 km

The difference in arrival times between P and S waves is 9 minutes. If the P waves arrived at 4: 56: 00, what time did the quake occur? 4: 46: 00

What term describes the process by which one plate dives beneath another? Subduction

What kind of rock makes up most of the contenents? Granite

As distance from a mid-ocean ridge increases, the age of the sea floor Increases

What force causes the plates to drift? Convection currents in the mantle.

Where are earthquakes and volcanoes most likely to be found? Along plate boundaries

What kind of rock makes up most of the sea floor? Basalt

The study of the magnetic properties of ancient rocks is called Paleomagnetism

Why might a seismic station receive P waves but no S waves from a particular earthquake? The S waves could not pass through the liquid outer core.

What geographic feature is likely to be found in regions where two continental plates collide? A mountain range

What term describes a region on the earth's surface that receives neither P nor S waves from a particular earthquake? A shadow zone