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The study of what happens on, in or under the world's oceans is known as what?
The textbook gives four primary reasons that closer attention is now being given to the oceans by nearly all nations. Which one of the following is NOT one of the four reasons?
Approximately what percentage of the U.S. population lives and works near the nation's seacoasts?
What science is concerned with the nature of the universe and its origin?
What force broke up water molecules into separate atoms of hydrogen and oxygen in the Earth's early atmosphere?
Where does most of the water vapor found in our atmosphere come from today?
What factor has kept almost constant the amount of water in the seas?
Which two elements are suspected to make up Earth's core?
Approximately how many miles in diameter is the Earth's solid inner core?
What is the name of the dense layer of rock approximately 1,800 miles thick which surrounds the molten outer core of the Earth?
What is the asthenosphere?
Under the oceans of the world, what is the average depth of the Earth's crust?
What is the average depth of the Earth's crust under the continents?
The Earth's lithosphere is divided into ____ major plates and about ____ smaller ones.
Which one of the following is NOT one of the six major plates making up the lithosphere?
Which of the following is NOT a name of one of the smaller plates of the lithosphere?
Where do most of the volcanic eruptions occur on the Earth's surface?
What is the name given to the movement of landmasses on the Earth's surface?
What is the name of the Theory of the movement of the Earth's landmasses over time?
What is the name that scientists give to the original supercontinent that made up all the land mass of Earth 200 million years ago?
What is the name of modern instruments that measure the intensity of earthquakes?
Approximately how many people were killed in the 1976 earthquake in Tangshan, China?
What is the name given to waves up to 100 feet high that often occur following an earthquake?
How fast can Tsunami's travel across the ocean?
What was the name of the volcano whose explosion in 1883 killed as many as 36,000 people due to tsunamis?
How many years ago do cosmologists currently believe that our solar system began?
What is the lithosphere?
Early in Earth's history, the land mass that is now Australia broke away from what other land mass?