Answer:
1- Option (D)
2- FALSE
Explanation:
The seafloor spreading takes place because of the divergent plate motion. Alfred Wegener observed this motion of the seafloor and the continents but was not able to explain the main mechanism behind this until the new theory came into the picture. The divergent motion of seafloor and the motion of the continents were explained by the universally accepted theory known as the Plate tectonic theory. This theory was able to explain the mechanism behind this plate motion.
The study of the seafloor spreading provided some pieces of evidence that supported the continental drift theory. They gave a basic idea about how the oceanic plate gets subducted (consumed) at the convergent plate motion that undergoes partial melting at greater depth. As a result of which the magma rises up to the surface on the overriding plates.
The crust represents the outermost layer of the earth. They are of 2 types, namely the oceanic and the continental crust. These crusts when slide past one another in a transform plate boundary, it is neither created nor destroyed. It remains conserved.
Thus, the correct answers are given above and the second statement is false.
Answer:
copernicus's idea of the solar system had an idea of the sun in the middle aka heliocentric model, and Ptolemy's model aka the geocentric model has the Earth located in the center
Explanation:
I had this lesson earlier this school year
The rate of pacific plate motion is 7 centimeters per year.
<h3>Movement of pacific plate</h3>
The rate of pacific plate motion is seven centimeters which is equals to 2.75 inches per year i.e. about the rate at which fingernails grow. The main reason behind the movement of Pacific Plate is due to sea floor spreading from the East Pacific Rise (divergent margin) in the Gulf of California.
While on the other hand, the North American Plate moved to the west and north west due to sea floor spreading from the Mid Atlantic Ridge (divergent margin) so we can conclude that the rate of pacific plate motion is 7 centimeters per year.
Learn more about plate movement here: brainly.com/question/18219355
Learn more: brainly.com/question/26375728
"In republics, citizens have less direct control over government. ... (c) Why do some people hold that the United States is more properly called a republic rather than a democracy? In a Democracy there is no need for a Constitution, since the majority can simply change Law at a whim."
From google
