Exploring Earth's Geological Mysteries
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Exploring Earth's Geological Mysteries

Discover the geological wonders of the Earth, from shifting continents to erupting volcanoes and deep ocean trenches. Delve into the mysteries of the Mariana Trench, the deepest point on Earth, as science detectives explore its creation through dangerous dives.

Created by
@DelectableGamelan

Questions and Answers

What is the main focus of the text?

The discovery of the marianas trench

When was the marianas trench first explored?

During the Challenger expedition in 1872

What technology emerged 75 years after the discovery of the marianas trench?

Submarine detection sonar

How deep is the marianas trench?

<p>7 miles</p> Signup and view all the answers

What was used to measure the depth of the ocean floor during the Challenger expedition?

<p>Lead weight and rope</p> Signup and view all the answers

What did the Challenger expedition mark the birth of?

<p>Modern oceanography</p> Signup and view all the answers

Which technology did scientists realize they could use to build a remarkably accurate picture of the world beneath the waves?

<p>Sonar technology</p> Signup and view all the answers

What did sonar technology originally aim to detect?

<p>Submarines lurking in the deep</p> Signup and view all the answers

How did scientists use sonar to chart the bottom of the sea?

<p>'Ping' sounds bouncing off solid objects</p> Signup and view all the answers

What was discovered at a depth of 4475 fathoms?

<p>A five-mile deep hole</p> Signup and view all the answers

What was used during early 1900s to detect submarines lurking in deep?

<p>Sonar technology</p> Signup and view all the answers

What was used to measure ocean floor depths in early days?

<p>Ropes and lead weights</p> Signup and view all the answers

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