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nevsk [136]
3 years ago
15

How do we know that earth's magnetic field has undergone reversals in the past?

Geography
1 answer:
slega [8]3 years ago
4 0
We know that the poles had changed positions in the past, because of the arrangement of the crystals in the rocks made out of metal. The crystals of the metals act like the needle of the compass when the rock is cooling off and forming, they turn into the direction of the strongest magnetic field on the Earth, which is the North Pole. So by studying the rocks that are made out of metals and see the crystals arrangement and also estimate the age of the rocks, the scientist can precisely tell how has the North Pole been moving throughout time.
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HOW CAN SUBSIDENCE LEAD TO THE FORMATION OF SEDIMENTARY ROCK?
worty [1.4K]
<span>Subsidence changes the base level allowing further sedimentation. Augmented burial results in ever cumulative heat and pressure as the sediments are compressed. For sandstones, the augmented pressure of compaction outcomes in heaviness solution of the quartz grains. The silica unconfined from this procedure forms quartz overgrowths inside the pores efficiently cementing the sand grains together. If the procedure lasts, the sandstone will finally form quartzite.</span>
5 0
3 years ago
A meander is best described as a
Kaylis [27]
A meander is best described as a bend or curve in a stream channel.
5 0
3 years ago
Please help me with this and just label them 1,2,3 from left to right and put next to it which bottom one it is
sammy [17]

Labeled from left to right (left column 1-9 and right column 10-18), these are the answers.

Economic - 5, 6, 16

Social - 3, 4, 7, 8, 12, 18

Environmental - 1, 2, 9, 14, 15, 17

Political - 10, 11, 13

<u>Explanation</u>:

  • Statements 5, 6 and 16 are related to the economy of China. 5 talks about how it is becoming richer, 6 talks about its currency and 16 talks about 2 major cities that contribute to China's economic growth.
  • Statements 3, 4, 7, 8, 12 and 18 are related to the people of China. 3, 7 and 8 talk about the people in general and where they live in China. 4 and 18 talks about the staple food and the Chinese restaurants they have in the UK. 12 talks about the language they speak.
  • Statements 1, 2, 9, 14, 15, 17 are related to the environment of China. They talk about the rivers, land, mountains, ocean, desert, and climate of China respectively.
  • Statements 10, 11 and 13 relate to the political state of China. 10, 11 highlights the capital city and a great landmark in China. 13 talks about the relevant communist system present in China.
4 0
3 years ago
Which of the following Middle Eastern cities is sacred to Jews, Christians, and Muslims?
finlep [7]
The answer is C; Jerusalem. It was a religious area that was fought for, because the religions trying to take control thought of it as a holy land. 
3 0
3 years ago
Read 2 more answers
What is the value of x
Firlakuza [10]
Since this is a square you can set 3x+20=5x then you can solve for x.
Subtract 3x from both sides:
3x-3x+20=5x-3x
20=2x
Divide both sides by 2
20/2=2x/2
10=x

Hope this helps.
3 0
3 years ago
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