Answered

Q28. How far do the plates move away from each other every year?
Q29. If Africa is approximately 2400 km away from the Mid-Atlantic Ridge, how long ago was it when Africa was directly at or near the Mid-Atlantic Ridge?

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The movement of the plates every year depends on the types of plates, in fact, it is complex since they are many plates, and going in various directions corresponds to a type of fault line and label of ground. Further, the movements of plates create three types of tectonic boundaries: convergent, divergent and transformation. The rate of their movement was one to two inches per year, approximately two to five centimeters per year.  

Q28. How far do the plates move away from each other every year?  

  • In the various studies about the average rate of movements of plates was approximately one centimeter to five centimeters.
  • The distance of movements of plates depends on the location, in the North Atlantic region is only about one to three centimeters per year (1-3 cm/year), while in the Pacific region it takes up to five to ten centimeters per year (5-10 cm/year).
  • The Pacific Ring of Fire (also referred to as Circum-Pacific Belt) gives factors in how the plate movements occur, the countries and ocean beneath this area experience a series of volcanic eruptions and earthquakes, if there is an earthquake, there is also a movement of plates with different velocity.

Q29. If Africa is approximately 2400 km away from the Mid-Atlantic Ridge, how long ago was it when Africa was directly at or near the Mid-Atlantic Ridge?

The Africa Plate’s peed is approximately at around 2.15 cm per year, and the Mid-Atlantic Ridge is a Mid-ocean ridge, a kind of divergent tectonic plate boundary located in the Atlantic Ocean. The displacement of Africa and the Mid-Atlantic Ridge was about 6 110 km, therefore around 2.8 million centuries for Africa to directly reach the Mid-Atlantic Ridge.

 

Some Factors Can Affect the Movement of Plates.

  1. Types of tectonic plates and  movements of plates
  2. The geological event that could take the plates to move
  3. Amount of forces applied in thermal convection

 

Read more:

The geologic event that could take place on the type of plate movement. https://brainly.ph/question/678218

 What is Thermal Expansion? https://brainly.ph/question/800480

 The first scientist that proposed that thermal convection in the mantle that causes the continental drift? https://brainly.ph/question/552242