LABS
AN
INTRODUCTION TO EARTHQUAKES
Objective:
To understand
the basics of earthquakes and the science surrounding them.
Directions:
First Print
this page.
Then follow
the sequenced questions below. You must answer every question (by
following the directions) in order to receive the extra credit. If
you miss a question you have to go back and locate the answers in the next.
After you hand in this assignment, I will give you a brief quiz on what
you learned.
HINT: I
would go through the Earthquake Site one time without the questions, try to
learn what you can, and then go through the Website with the questions.
Sequenced
Questions:
Click on the
Next button.
1) What have
we learned about earthquakes. List three examples.
1.)
2.)
3.)
Click Next
2) What is an
earthquake?
3) What do
earthquakes generate?
4) What
instrument do scientists use to study earthquakes
5) What is a
seismogram?
6) When (and
by whom) was the first seismograph created?
7) By the end
of the __________ century, several European inventors had constructed
different seismographs. Most were _____________ and operated by suspending a
magnetic pendulum within an electric coil.
8) Because a
magnet moving, the movement of the ground during an earthquake can be
converted into an _______________
9) When
was the WWSSN formed?
10) This
network consists of over _____ seismographs in _____ countries.
11) Where
were these seismograph puts?
12) The
Earth's outermost surface is broken into ___________ which are 60-200 km
thick and float on top of a more fluid zone, much in the way that
icebergs_________ of the ocean.
Zim
Fact: These plates do one of three things. They converge,
diverge, or transform. Its these three type of movements which dictate how the
continents form, look, and change over millions of years.
13) Describe
converging.
14) Describe
diverging.
15) Describe
transformational
16) Is
the movement along plates smooth?
17) What
causes the earthquake?
18) What is a
fault?
19) At what
rate is Pacific Plate moving?
20) What
famous fault separates the Pacific Plate from the North American Plate
21) What
force to the large blocks have which restrict the large blocks from moving
apart?
22) What does
the earthquake create? What type of waves are these similar to?
23) In 1889,
E. von Rebleur Paschwitz first noted that seismic waves
recorded in Germany were generated by an earthquake that was in what
international city?
24) What two
types of waves do earthquakes generate?
25) Which
type of wave travels fastest? Which type of wave if first recorded by
the seismograph?
26) How many
seismograph stations does it take to pinpoint the exact location of an
earthquake?
27) What are
the two popular "scales" to measure an earthquake's intensity?
28) What is
the ranges of numbers of the Mercalli Scale?
29) Who
developed the Richter scale?
30) How many
times greater is an earthquake of 6, than an earthquake of 5? (Figure it
out)
31) What
else does Seismology provide a measure (or monitor) of?
32) What
is seismic tomography?
33) What
are the three main levels of the earth?
34) What
is crust?
35) Where is
the crust the thickest
36) What is
the mantle?
37) What is
the core?
38) What
causes the Earth's magnetic field?
39) In which
layer do most earthquakes form?
40) When did
the great San Francisco earthquake happen?
41) What was
the damage of the San Francisco quake?
42) What was
the name of the act that mandated construction standards for California
Schools?
43) How much
higher did the Santa Cruz mountains become because of the Loma Prieta
earthquake.
44) What do
scientists now think was the cause of the formation of the Santa Cruz
mountains?
45) If you
live in California near a quake zone, for how many hours do the experts
recommend that you keeps supplies on hand for?
