Earth Sciences & Geology - November 2007

what type of rocks is the rocks that you can find around swimming pools? they are round.

also, what type of rock is this? it has black and darck brown stripes going horizontal

thanks a lot

2007-11-28 21:25:38 · 6 answers · asked by poonnapat 2

Can you please list 3 ways that minerals form and what happens during the process

Ty for hellping =Þ

2007-11-28 17:51:12 · 3 answers · asked by Anonymous

Plz tell me the answer based on theory.
one reason we infer that the earth's core is metallic is that:
a.earthquakes can only occur if the core is metallic
b.the average density is greater than the surface density
c.most of the continents are made of metals
d.the surface density is greater than the average density

2007-11-28 16:33:35 · 6 answers · asked by Tommy 1

2007-11-28 16:27:28 · 2 answers · asked by Beatriz G 1

2007-11-28 16:14:14 · 3 answers · asked by Anonymous

2007-11-28 15:57:31 · 8 answers · asked by Anonymous

this summer i found this rock up camping. it is really really lightweight and it is kinda whiteish in the middle. it has little flakes that are goldish but also kinda bronzeish. it has biotites in it like granite rocks (biotites are these little black spots) the rock crumbles very easily. can someone please help me find out what kind of rock this is!!!! im really hoping to be a petrologist when i. older so i want to learn about this rock

2007-11-28 14:59:57 · 4 answers · asked by rAwRnEsS x] 2

2007-11-28 14:48:52 · 3 answers · asked by kelly 1

im 12 years old in 6th grade on the brinx of failing please help me ur girl love ya i love u boy

2007-11-28 14:43:27 · 3 answers · asked by mz.soulja girl 1

2007-11-28 14:38:53 · 3 answers · asked by lak3rz08 2

What long term effects does beach erosion cause?

2007-11-28 13:58:01 · 1 answers · asked by Anonymous

2007-11-28 13:31:32 · 3 answers · asked by Anonymous

2007-11-28 13:06:36 · 3 answers · asked by Anonymous

What time, the phase, and the alitude of the moon on this days?
Nov. 13
Nov.15
Nov. 18
Nov.20
Nov.22
Nov.25
Nov.26
Nov.27
any time of that day
2007 btw

2007-11-28 12:51:47 · 2 answers · asked by ♥Love stinks.♥ 2

me and my sister betting on who will get the better report card

2007-11-28 12:41:14 · 4 answers · asked by ~~heavenly sent by god~~ 2

How do evolutionists explain this event? And how about the Creationist explanation?

2007-11-28 12:13:25 · 8 answers · asked by Free Thinker 6

2007-11-28 12:11:26 · 21 answers · asked by amr_systems2007 1

1. _____ are also known as "L waves." Compressional waves Shear waves
Surface waves Transverse waves

2. A single seismogram locates the _____ of an earthquake. epicenter focus
plate boundary none of these

3. Which statement about the cause of building collapse during an earthquake is FALSE? Buildings on bedrock survive earthquakes better than buildings on soil. Most buildings can survive horizontal shaking better than vertical shaking.
Soils under buildings may settle from severe shaking. Some soils under buildings become liquefied because of severe shaking.

4. The part of the seismograph that moves during an earthquake is the: base drum
pen record sheet

5. Which best describes foundation damage? The foundation cracks during the earthquake Buildings built on soil sink due to settling after an earthquake
The foundation is not strong enough to withstand the earthquake waves even though the building is none of these

6. The place in the Earth where the earthquake actually occurs is known as the _____. epicenter focus
plate boundary none of these

7. The point on the surface of the Earth directly above where the earthquake actually occurs is the _____. epicenter focus
plate boundary none of these

8. What are the two major causes of structural damage during an earthquake? ground shaking and flooding foundation failure and flooding
ground shaking and foundation failure none of these

9. Why might cloudy water be indicative of an upcoming earthquake? cloudy water has low sediment content, which may indicate an upcoming earthquake cloudy water has high sediment content, which may indicate an upcoming earthquake
cloudy water indicates an increase in elevation, which may indicate earth movement none of these

10. Why are multiple seismographs needed to properly measure the magnitude of an earthquake? because each seismograph measures a particular type of wave because one seismograph can only determine how far away the epicenter is, not in which direction
both of these neither of these

11. Why are earthquakes generally more destructive than volcanoes? They are caused by plate motions Earthquakes are always accompanied by tsunamis
The area affected by an earthquake is larger They occur only in populated areas

12. What is the name of the scale used to measure the magnitude of an earthquake? the epicenter scale the elastic-rebound scale
the fault scale the Richter scale

13. A(n) _____ is a break in the Earth's crust. earthquake lithospheric plate
epicenter fault

14. Which is the most accurate measurement of an earthquake's magnitude? Richter Scale seismic moment scale
elastic-rebound scale none of these

15. How many seismograms are needed to locate the epicenter of an earthquake? 1 2
3 4

16. Earthquakes that cause damage over larger areas are most likely to have occurred at: collision boundaries diverging boundaries
sliding boundaries subduction boundaries

17. Why did the Alaskan earthquake of 1964 have a higher seismic moment than the San Francisco earthquake of 1906? because it caused more damage because it had a higher Richter rating as well
because it released more total energy none of these

18. Which of the following is indicative of an upcoming earthquake? a decrease in elevation an increase in resistance
a clear water well none of these

19. This type of wave is the most dangerous. compressional waves shear waves
transverse waves surface waves

20. _____ are also known as "P waves." Compressional waves Shear waves
Transverse waves Surface waves

21. The part of a seismograph that does NOT move during an earthquake is the: base drum
pen record sheet

22. Which of the following is the major cause of earthquakes? the motion of lithospheric plates an erupting volcano
a collapsing cavern the impact of a meteor

23. One seismograph station, by itself, can determine the: direction to the epicenter location of the epicenter
distance to the epicenter location of the plate boundary

24. What is the name of the theory about the cause of earthquakes? the epicenter theory the elastic-rebound theory
the fault theory the Richter theory

25. A seismograph left on the moon could be used to determine: the thickness of the moon's lithosphere the exact distance between Earth and the moon
the composition of the moon's atmosphere the gravitational force between Earth and the moon

26. A state with little need for reliable earthquake forecasts is: Alaska California
Missouri Wyoming

27. How many earthquakes occur every year? one thousand one hundred thousand
one million one hundred million

28. This type of wave produces vertical motion and travels only through rock. compressional waves shear waves
transverse waves surface waves

29. Expansion and contraction of the rock material through which a wave passes is a characteristic of: compressional waves shear waves
transverse waves surface waves

30. _____ are also known as "S waves." Compressional waves Shear waves
Transverse waves Surface waves

2007-11-28 12:05:12 · 2 answers · asked by Anonymous

2007-11-28 10:40:14 · 3 answers · asked by Anonymous

2007-11-28 10:30:37 · 6 answers · asked by Anonymous

I need to know badly!

2007-11-28 10:26:31 · 4 answers · asked by Jess F 1

i am haveing a hard time anwsering these questions and i hope someone on here can help me

1.Rocks are classified into families based on:

Color
How they were formed
Where they are found
Weight







2.Igneous rocks, like those that have erupted from a volcano, which are found on the surface are called extrusive rocks.

True
false

2007-11-28 10:21:49 · 3 answers · asked by MiSs MoM 2

i need simple answers
please

2007-11-28 10:11:26 · 3 answers · asked by Kathy 3

2007-11-28 09:42:36 · 4 answers · asked by Tyler B 1

2007-11-28 07:03:48 · 4 answers · asked by spicymnguy 5

2007-11-28 05:28:36 · 8 answers · asked by just james 3

a. to record and predict meteorites
b. to record and predict volcanic eruptions
c. to record and predict the weather
d. to record and predict earthquakes

2007-11-28 04:49:46 · 7 answers · asked by Anonymous

a. geologic units of similar ages
b. geologic units of similar colors
c. geologic units of similar types of rock
d. geologic units of different ages

2007-11-28 04:49:23 · 2 answers · asked by Anonymous

a. a volume of rock of different age ranges and rock types
b. a single rock of a given age range and rock type
c. a volume of rock of a given age range and rock type
d. a single rock of different age ranges and rock types

2007-11-28 04:48:54 · 1 answers · asked by Anonymous

a. the distribution of topographic features
b. the distribution of geologic features
c. realistic geologic features
d. the distribution of political boundaries

2007-11-28 04:47:27 · 3 answers · asked by Anonymous