answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka-Z-Leto [24]
2 years ago
5

Describe how paleomagnetism is Used to calculate the rate of sea floor spreading?

Geography
1 answer:
qaws [65]2 years ago
3 0
Every 50,000 years or so, the magnetic poles of the Earth reverse. As basalt is erupted from sea floor spreading centers, the iron in the basalt aligns itself to the magnetic pole orientation. Paleomagnetism is simply studying the magnetic orientation of iron in old rocks. So, if you have a section of sea floor and you find three zones that record magnetic pole reversals, you know that by the rate of those reversals you are looking at roughly 150,000 years of time.
You might be interested in
What type of sediment formed from minerals that crystallize from seawater?
Allisa [31]
Halite and gypsum. Minerals that crystallize from the seawater are the example of hydrogenous sediment .
7 0
2 years ago
1) Convert the distance from kilometers into miles.
stealth61 [152]

Answer:

1384.83 miles .

Explanation:

1 .

Conversion of kilometer to mile ,

1 kilometer is equal to 0.621 mile ,

The lower mantle is 2230 km can be converted to miles , by simply multiplying by the value 0.621 .

Hence ,

the conversion is done as follows ,

2 .

Lower mantle = 2230 km = 2230 * 0.621 = 1384.83 miles

hence , the value of lower mantle is 2230 km and in terms of mile is equal to 1384.83 miles .

4 0
2 years ago
The invention of the printing press facilitated which three events? a decrease in the cost of books the spread of information to
Brrunno [24]

Answer:

The spread of information to many people

The sharing of scientific knowledge and discoveries

A decrease in cost of all books

Explanation:

Took the test

3 0
2 years ago
Which statement is true?
mamaluj [8]

Answer:

1) Climate change in the last 100 Myr. has been extreme, thus offering a potential explanation of Earth's <u>TRUE</u>

Explanation:

2) Orbital forcing (changes in Earth's axis tilt) are too insignificant in the last 25,000 yrs. to explain Earth's warming in the past 125 years.  <u>FALSE</u>

3) Retreat of glaciers in the past 8000 years has been uniform, thus potentially explaining Earth's warming in the past 125 years. <u>FALSE</u>

3 0
2 years ago
All of the following statements are true about the influence of oceans on climate, except __________. A. oceans regulate the tem
ANEK [815]
D. ocean water temperatures rise and fall much more quickly than land temperatures do.
9 0
2 years ago
Read 2 more answers
Other questions:
  • What human activities cause acid rain?
    6·2 answers
  • What is one similarity between the famine and plague of the 1300s?
    9·2 answers
  • When rocks form and cool, _____ particles align according to the magnetic poles?
    10·1 answer
  • Write a short paragraph of about 150-300 words. Explain how the physical environment can limit human activities.
    8·1 answer
  • A Time magazine cover once suggested that an "angry Sun" was becoming more active as human activity changed Earth's climate. It'
    9·2 answers
  • Which expression represents the fourth term in the binomial expansion of (e + 2f)10?
    14·1 answer
  • A radioactive isotope of the element potassium decays to produce argon. If the ratio of argon to potassium in a mineral is found
    11·1 answer
  • Which BEST explains what scientists are referring to when they use the term conservation?
    9·1 answer
  • Invent a process for the formation of ocean basins consistent with catastrophism
    11·1 answer
  • continental drift was first proposed by a scientist named alfred . he theorized that the were once one large landmass that drift
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!