How do scientists known what the center of the earth is?
There 4 ways how scientist found out about the center of the earth ( aka inner core and outer core).
Answer 1:
Geologists hypothesize that the Earth's center is composed of predominantly iron. The outer portion of the center, known as the "outer core", is thought to be liquid iron. While the interior portion of the center, known as the "inner core" is thought to be solid iron.
Answer 2:
The main evidence for the structure of the Earth comes from studying waves generated during an earthquake. When stress builds up and rocks at depth break, then elastic waves, just like sound waves are sent from the point of rupture. These waves speed out and move through the earth. When we put seismometers …show more content…
The first estimate of the density of the Earths core was made by Isaac Newton over 300 years ago. Because the strength of a planets gravitational field depends on its density, Newton was able to use his observations of the Earth gravity to calculate that the average density of the Earth was more than twice that of rocks at the surface.”
What is the moon illusion?
The so-called "moon illusion" or "moon effect" has perplexed people since earliest historical times, at least as early as the 7th century BCE. It is described in early Greek and Chinese writings. Aristotle mentions it in 350 BCE.
The moon seems larger in angular size when it is near the horizon than when it is high in the sky. Some people judge it to be as much as twice as large, but the average estimate is 50% to 75% larger.
It's not a small effect. The Sun displays the same illusion, but viewing the Sun directly with the eye is hazardous without proper precautions, so let's leave that out of this discussion. The same illusion is observed with any extended object in the sky, such as a
There 4 ways how scientist found out about the center of the earth ( aka inner core and outer core).
Answer 1:
Geologists hypothesize that the Earth's center is composed of predominantly iron. The outer portion of the center, known as the "outer core", is thought to be liquid iron. While the interior portion of the center, known as the "inner core" is thought to be solid iron.
Answer 2:
The main evidence for the structure of the Earth comes from studying waves generated during an earthquake. When stress builds up and rocks at depth break, then elastic waves, just like sound waves are sent from the point of rupture. These waves speed out and move through the earth. When we put seismometers …show more content…
The first estimate of the density of the Earths core was made by Isaac Newton over 300 years ago. Because the strength of a planets gravitational field depends on its density, Newton was able to use his observations of the Earth gravity to calculate that the average density of the Earth was more than twice that of rocks at the surface.”
What is the moon illusion?
The so-called "moon illusion" or "moon effect" has perplexed people since earliest historical times, at least as early as the 7th century BCE. It is described in early Greek and Chinese writings. Aristotle mentions it in 350 BCE.
The moon seems larger in angular size when it is near the horizon than when it is high in the sky. Some people judge it to be as much as twice as large, but the average estimate is 50% to 75% larger.
It's not a small effect. The Sun displays the same illusion, but viewing the Sun directly with the eye is hazardous without proper precautions, so let's leave that out of this discussion. The same illusion is observed with any extended object in the sky, such as a