Structure Of Earth Flashcards
What is the initial temperature of earth and age of Earth?
It is 6000°C, and four point 5 billion years ago
What causes the increase of the pressure and temperature inside the Earth?
It is due to the presence of radiative materials, which increases the pressure and temperature
What are the sequential arrangement of earth below the Earth surface?
Crust, mantle, core
What is the outermost layer of the earth?
Crust
What is the name of element which is abundant in the crust?
SIAL that is silica and aluminium
What are the two types of crust?
Oceanic crust which is thin, and it is 5 km in length and oceanic crust, continental crust which is 35 km in in length?.
What is the name of the element present in the mantle?
Silica and magnesium – SIME
What are the types of mantle?
Upper mantle is known as the lithosphere. It is the upper mantle with the crust.
Asthenosphere is the weak portion of the upper mantle
What is the radius of the core?
3500 km in radius
Where is made up of heavy-metal such?
Nickel and I am the layer is known as NIFE. The inner core is a solid core and outer core is a molten magma.
What is known as Conrad discontinuity?
The layer between continental and oceanic crust
What is known as mohorovicicdiscontinuity?
This continuity separates between the trust and the upper mantle
repati discontinuity
Separates the upper and lower mantle
Guttenberg discontinuity
Lower mantle and outer core
Lehman discontinuity
Separates the outer core from the inner core
Earthquake occurs due to the
Sudden release of energy from the interior of the Earth, which is the catastrophic force
They had quite felt point on the surface is known as
Epicentre
What is the name of the point where the energy released happens?
FOCUS
What are the types of seismic waves?
Body waves and surface waves
What are the two types of body waves?
S waves and P waves
Surface waves are measured in the form of
Richter
Nature of P waves
Longitudinal, nature, parallel, and forms concentric rings, transfer of energy from one particle to another particle, can travel through solid and water, but there is a significant change of velocity in when there is a change in medium.
Nature of S wave
Transversal and perpendicular in nature, which is mostly wave form cannot transfer from one medium to another medium.
Shadow zones occurred between
103° and 142°
