The most powerful earthquake recorded in Japanese history, magnitude 8.9. The tremors were the result of a violent uplift of the sea floor 80 miles off the coast of Sendai, where the Pacific tectonic plate slides beneath the plate Japan<span> sits on. Tens of miles of crust ruptured along the trench where the tectonic plates meet. The earthquake occurred at the relatively shallow depth of 15 miles, meaning much of its energy was released at the seafloor.</span>
<span>The following best describes a vocabulary system called Word Forms:
</span>
B. Learn how a root word changes when used as a noun, verb, adjective, or adverb to learn multiple related words at the same time.
I have no idea what half of the words are in the question
Some examples of primary sources are:
- Theses,
- dissertations,
- scholarly journal articles
- poems,
- photographs,
- speeches,
- letters, etc
'
Some examples of secondary sources are:
- Textbooks,
- histories,
- biographies
<h3>What is a Primary Source?</h3>
This refers to the type of source that is written from a first-hand account of a person that witnessed the event.
Hence, we can see that although your question is incomplete, a general overview was given to help you better understand the concept,
Read more about primary sources here:
brainly.com/question/896456
#SPJ1
