Earth Sciences & Geology - December 2007

1: Every few hundred thousand years, what mysterious phenomenon occurs on earth?
a. an ice age---what I think
b. extinction of species
c. planet-wide volcanic eruptions
d. the reversal of the magnetic poles

2: The plates of the earth moving on the molten rock below caused ___________.
a. continental drift
b. larger oceans
c. tornadoes and hurricanes
d. none of the above--what i think

3: The variation in the length of day and night is caused by ____________.
a. the varying temperature of the sun
b. the gravity of the moon
c. the tilt of the earth's axis---what i think
d. the measure of the earth's diameter

4: ________ surround the planet because high pressure air always moves toward low pressure air.
a. winds-- i think
b. clouds
c. ocean waves
d. snow-capped mountains

5: It has happened before. It will happen again. What is it?
a. the shift in the content of earth's atmosphere to all carbon dioxide
b. the ice age--- what i think
c. the reversal of earth's orbit
d. none of the above

2007-12-15 05:22:50 · 7 answers · asked by Anonymous

then would any mountains come of it?

2007-12-15 05:20:39 · 3 answers · asked by Piranhatron 3000 3

I haven't been able to find any credible sources on the history of the polar ice caps. But, I have heard that the polar ice caps have been free of ice many times in the history of the plant. Is this true? If this is true is this big global warming issue a little over blown because this would be just a natural cycle of the earth. If this has happend before, melting of the polar caps, what has happend in the past?

2007-12-15 04:47:59 · 15 answers · asked by aap1970 2

ie. Forest Deforestation
Greenhouse Gas Emissions

What is the most important issue that needs to be prioritized immediately.

Thank you.

2007-12-15 04:41:33 · 6 answers · asked by healinghealer 1

ok can someone tell me the uses of igneous,sedementary and ,metamorphic rocks, and how to identify them????

2007-12-15 04:36:03 · 2 answers · asked by Anonymous

Can any one show me a picture of a y chromosome? please. I looked on the internet but couldn't seem to find one. Thanx.

2007-12-15 04:13:15 · 4 answers · asked by Anonymous

like for
how does copper relate to a desert?, the answer is that you can mine copper in the Atacama Desert. There are mining fields there.

2007-12-15 04:06:06 · 2 answers · asked by Anonymous

I hve an Earth Science Lab which is due on Monday and I can't figure out how to use my geographic safety compass, however I did fine with the ones in class. Is there a difference between Geometric and Geological Safety compasses? I need one which will help me draw the circles for the seismograms that will help me locate the epicenter. I'm only in middle school, so please help!!!

2007-12-15 03:36:58 · 2 answers · asked by nibor194 3

Why lava are hot? How they gain the energy? Will the centre of earth lose energy and become cooler after a long time?

2007-12-15 03:19:56 · 3 answers · asked by Anonymous

2007-12-15 02:32:42 · 7 answers · asked by sebas4241 1

2007-12-15 00:18:00 · 9 answers · asked by dbzfreak 2

2007-12-14 22:01:03 · 5 answers · asked by jemuel p 1

2007-12-14 19:41:20 · 7 answers · asked by Anonymous

Wat kind of rock is it? (Is it igneous, metamorphic, or sedimentary?)
I no it's a mineral..... but on this question it asks wat kind of rock it is..... So I'm bummed...

2007-12-14 16:26:02 · 8 answers · asked by Anonymous

I need a specific answer because i am doing a science project.

2007-12-14 15:14:30 · 9 answers · asked by tickle_zilla 1

i don't get why dry ice forms on roads? sure it is cold but not below 109 farinheit. sure exahust comes out the back tail pipe but isn't that carbon monoaxide not dioxide so why does it form on roads giving us terrible driving conditions?

2007-12-14 15:08:08 · 6 answers · asked by John C 1

If we take a hand specimen of quartz for instance does every face on it have a different form and hence a different miller reference?

2007-12-14 13:49:13 · 2 answers · asked by Gideon 1

If the polar ice caps melt,will the continents form an new Earth like it has been doing for millions of years?

2007-12-14 13:09:51 · 2 answers · asked by Anonymous

2007-12-14 13:06:54 · 13 answers · asked by Sweet Judy 7

What do you think about the way global warming is affecting us?

2007-12-14 12:29:41 · 4 answers · asked by Anonymous

Please Answer As Many As You know and tell what type like oxidation thanks!!!

1.Rusted Ice Skates
2.Worn Away Rock
3.Worn Away Jeans
4.Worn Away Bark From Tree
5.Crack In Foundation
6.Worn Away Shoes
7.Crack In Garage

2007-12-14 12:24:49 · 3 answers · asked by Anonymous

2007-12-14 11:37:09 · 2 answers · asked by Komal P 1

2007-12-14 10:33:52 · 12 answers · asked by J-Boy 1

2007-12-14 10:26:30 · 1 answers · asked by Anonymous

Because paper is made from wood, it seams that it would be degratable. Meaning it would eventually disolve and become part of the earth. If thats the case then what about paper products, and why do you get a fine from littering with paper?

2007-12-14 09:45:08 · 4 answers · asked by lvillejj 4

i know that fog can form if cool air passes over the warm ground...
but i wanna know if it could form if there is warm air passing over the cool ground

2007-12-14 09:24:20 · 1 answers · asked by Muneeb 1

2007-12-14 07:36:16 · 7 answers · asked by Shan F 2

2007-12-14 07:15:56 · 3 answers · asked by Anonymous

If we use any less we will be lighting sodding candles

2007-12-14 07:11:49 · 4 answers · asked by mally 2

2007-12-14 04:48:54 · 2 answers · asked by Paul V 1