Question

medal rewarded!

are surface waves that cause rock to move horizontally without vertical displacement.






A.

Primary waves





B.

Secondary waves





C.

Rayleigh waves





D.

Love waves

wouldnt it be love waves?

Answer 1

look at this page

http://www.vashonsd.wednet.edu/mcmurray/science/justin/gespdf_ans/c9/cr9.pdf

it says that "love = vertical strong motion" on the first page, so love waves displace the rock vertically (it seems)

so it's not love waves

Answer 2

so would it be B then?

Answer 3

?

Answer 4

one sec

Answer 5

kk

Answer 6

here's a great site that shows the displacement of the earth/rock when each type of wave goes through

http://www.geo.mtu.edu/UPSeis/waves.html

Answer 7

notice how 3 out of the 4 types produce an up and down movement

Answer 8

yep i notice it :) could you do me a favor? could you correct my answers of 10 questions about earthquakes?

Answer 9

i'll give it a shot, but i'm no geologist or seismologist

Answer 10

lol okay, so then the first one would be B then correct?

Answer 11

did you have a look at the pics?

Answer 12

if so, then you would have seen that Secondary waves or S waves cause an up/down motion

Answer 13

P waves right, it said that p waves can only move through a solid rock

Answer 14

well that's true, but that's not what we're after

Answer 15

it says "P waves are also known as compressional waves"

so you will only get horizontal displacement with P waves

Answer 16

but wouldnt that be what we want? because it says waves that cause rock to move horizontally without vertical displacement.

Answer 17

exactly, we don't want to move the rock up and down

so that's why the answer is P waves

Answer 18

yay! lol

Answer 19

A scientist goes to a site that has been devastated by an earthquake. By observing around the epicenter of the quake, the scientist finds that very severe movement of the earth occurred. An earthquake like this one had not hit the area in approximately 300 years. Using the details described above, what was the likely magnitude of this earthquake on the Richter Scale?

A. 1-2
B. 3-4
C. 5-6
D. 7-8

I got 6-7 as an asnwer

Answer 20

6-7 isn't even an answer choice

Answer 21

sorry i got that messed up, let me correct it

A. 1-2
B. 3-4
C. 6-7
D. 8-9

sorry

Answer 22

im thinking 6-7 is as an answer

Answer 23

I'm thinking that 300 years is a very long time, so that would make me think that it's 8-9 because that's the largest magnitude given

besides, 6-7 happens quite frequently annually (not in the same place everytime) that I don't think 6-7 magnitudes happen every 300 years

Answer 24

alright

Answer 25

but not 100% though

Answer 26

lol its oka

Answer 27

Which of the following is NOT an example of a seismic wave?






A.

Primary wave





B.

Secondary wave





C.

Surface wave





D.

Tertiary wave

Answer 28

I said D

Answer 29

i'm thinking that too, never ran into Tertiary wave in any of the sites i came across

Answer 30

Which of the following types of earthquakes can be caused by human activities?






A.

Explosion earthquakes





B.

Tectonic earthquakes





C.

Volcanic earthquakes





D.

None of the above

Answer 31

I think A @jim_thompson5910

Answer 32

A sounds good since humans are able to control explosions, but not volcanoes and such.

Answer 33

yep!

Answer 34

Where was the largest earthquake on Earth recorded?






A.

Alaska





B.

Chile





C.

Japan





D.

Hawaii

I picked C japan

Answer 35

check out this page

http://earthquake.usgs.gov/earthquakes/world/events/1960_05_22.php

Answer 36

Japan is a good choice since there was a huge earthquake in 2011, but it wasn't the largest recorded

Answer 37

so chilli then right!:)

Answer 38

mmm chilli is always a good choice (now I'm hungry) lol jk

Answer 39

yep it's Chile

Answer 40

lol! im hungry too now that i think of it!!!!

Answer 41

lol sry, my bad

Answer 42

:)

Answer 43

Which scientist developed the scale used to measure the magnitude of an earthquake?






A.

Einstein





B.

Hess





C.

Richter





D.

Wegener

Answer 44

Richter!

Answer 45

you got it

Answer 46

An earthquake measuring 8.0 on the Richter Scale is _______ times stronger than an earthquake measuring 4.0 on the Richter Scale.






A.

40





B.

100





C.

1,000





D.

10,000

Answer 47

100?

Answer 48

I think a 6.0 is 10^1 times more powerful than a 5.0 (notice the exponent of 1 corresponds to the difference of 6-5 = 1)

so a 8.0 is 10^4 = 10,000 times more powerful than a 4.0

Answer 49

that sounds about right

Answer 50

so 100 right or 1000?

Answer 51

no i just said it above

Answer 52

10,000 right? or 100 lol

Answer 53

yep 10,000

Answer 54

idk where you're seeing 100

Answer 55

lol idk either hahah

Answer 56

The San Andreas Fault is an example of which fault type?






A.

Normal fault





B.

Strike-slip fault





C.

Reverse fault





D.

Thrust fault

Answer 57

getting tired i guess lol

Answer 58

strike slip right?

Answer 59

yeah i'm getting the same as well

Answer 60

Which of the following types of earthquakes are the most common?






A.

Collapse earthquakes





B.

Explosion earthquakes





C.

Tectonic eathquakes





D.

Volcanic earthquakes

Answer 61

volcanic earthquakes?

Answer 62

http://scign.jpl.nasa.gov/learn/eq2.htm

Answer 63

im soryy its tectonic

Answer 64

yep, that's ok, i had to look it up too

Answer 65

i guess volcanoes would be next, but i don't think volcanoes erupt that frequently as earthquakes happen

Answer 66

Which of the following is an example of a surface wave?






A.

Primary wave





B.

Secondary wave





C.

Rayleigh wave





D.

Tertiary wave

Answer 67

i got p waves

Answer 68

http://en.wikipedia.org/wiki/Surface_wave

Answer 69

In seismology, several types of surface waves are encountered. Surface waves, in this mechanical sense, are commonly known as either Love waves (L waves) or Rayleigh waves.

Answer 70

from that page i posted

Answer 71

C right?

Answer 72

yep

Answer 73

yay! 90% thanks:) first one was wrong

Answer 74

which one was that

Answer 75

that was this one i thought was love waves

Answer 76

oh so it was love waves? guess that pic i found was wrong, but idk

Answer 77

lol thanks so much!

Answer 78

you're welcome