1answer.
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
m_a_m_a [10]
3 years ago
9

How did scientist discover that earths outer core is liquid

Chemistry
1 answer:
weqwewe [10]3 years ago
7 0

The two observation made them came to the conclusion that earth's outer core is liquid is, 'Shear waves' one of energy waves do not travel through the outer layer and the magnetic field found in earth's surface

Explanation:

  • Shear waves are nothing but caused by shear force, it forms as a result of earthquakes.
  • Shear force is defined as the force you need to rub two solid objects.
  • Scientist found that shear waves disappear when it reaches the outer core of the earth and re-appears when it reaches the inner core of the earth.
  • As we all know, earth has a magnetic field which reaches the atmosphere, for this either there should be a permanent magnet inside the core of the earth or ionized molecules flow in the liquid.
  • Earth cannot have a permanent magnet in the core because of the high temperature at the core hence, the other option is feasible.
You might be interested in
SNC2L Reflection Activities
slega [8]

The reflection from plane mirror is shown in the diagram.

<h3><u>Explanation</u>:</h3>

The mirror is a plane surface which can reflect light. The diagram attached shows the schematic representation of reflection that occurs in a plane mirror.

The laws of reflection states that the incident ray, reflected ray and the normal at the point of incidence lies at the same plane. Here we can also see that all are lying on a same plane.

The second law states that angle of incidence is equal to angle of reflection. Here we can also see that the i =r. It is applicable here too.

4 0
3 years ago
Explain how the cell membrane controls the movement of materials into and out of the cell ?
sukhopar [10]
It's called simple diffusion, the small molecules without charges such as oxygen and carbon dioxide can flow through a plasma membrane without assistance and without expending energy. Other substances such as proteins, glucose and charged particles called ions cannot pass through the selectively permeable membrane.
5 0
3 years ago
Why do the gases on the periodic table tend to form negative ions?
boyakko [2]
Because the valence shell of gases wants to become full
8 0
3 years ago
Consider the equilibrium: HCOOH(aq) + F-(aq) &lt;----&gt; HCOO-(aq) + HF (aq) Given that the Ka of HCOOH = 1.8 x 10-4 and the Ka
Aleks [24]

Hey there!:

K = Ka * Kb / Kw

Ka = 1.8*10⁻⁴

Kb = 10⁻¹⁴ / 6.8*10⁻⁴

K =  1.8*10⁻⁴ * ( 10⁻¹⁴/ 6.8*10⁻⁴ ) * ( 1 / 10⁻¹⁴ )

K =  = 1.8 / 6.8

K = 0.265

Answer A

Therefore:

K is less than on the forward reaction is not favorable .


Hope That helps!

8 0
3 years ago
Use the following periodic table to help you. Which of the following would be classified as a metalloid?
Rama09 [41]
Silicon is a metalloid
4 0
3 years ago
Other questions:
  • HELP! I will give brainliest for correct answer
    12·1 answer
  • What would happen if your experimental value of water was too low or too high?
    7·1 answer
  • Use the graph to determine which is greater, the heat of fusion or the heat of vaporization. Explain how you used the graph to d
    6·1 answer
  • Which mass is easily forgotten about when trying to prove the law of conservation of mass in a chemical reaction.
    15·2 answers
  • Which statements describe what happens in a redox reaction? Check all that apply. A. Electrons move from one substance to anothe
    8·2 answers
  • How many atoms are in a solid piece of iron that has a mass of 24.0g?
    11·1 answer
  • Please Help!!!
    9·1 answer
  • HELP WITH THIS ASAP PLEASE!!! What is the mass in grams of 8.42 x 10^22 atoms of sulfur?
    11·1 answer
  • A serving of Frosted Flakes cereal contains 235,000 J of energy. Calculate the change in temperature (ΔT) that would occur if th
    15·1 answer
  • Can two objects be made of the Same substance if they have the same volume
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!