Exam 1: An Ocean World

How do echo sounders work and what kind of information can they provide about the ocean floor?

The first scientific expedition to use an echo sounder was the .

W hat would a visitor approaching Earth from space see 4.4 billion years ago?

Which individual was the first to provide a rough chart of an ocean current, specifically, the Gulf Stream?

Scientific hypotheses are never revised or updated.

Modern oceanography began with the efforts of , who trapped his ship in pack ice to explore the Arctic.

What was the most important outcome of Matthew Maury's work?

Glomar Challenger is known mainly for .

Nuclear fusion is the changing of hydrogen and helium into heavier elements of carbon, oxygen, silicon, and iron in stars.

Latitude is a measurement that uses the prime meridian (Greenwich, England) as a reference point to help determine the exact location of a specific point on Earth.

New planets formed in a cloud of dust and debris surrounding our young sun through a process known as .

The death of a star is characterized by a massive release of energy called a .

The average land elevation is approximately .

Edward Forbes was an Edinburgh professor who thought that .

The ocean provides a variety of resources ranging from food and water to energy, construction materials, and life-saving pharmaceuticals.

When using the scientific method, scientific theories must be .

On a planetary scale, the ocean comprises about % of Earth's mass.

Marine science draws on information from disciplines of geology, biology, chemistry, physics, and engineering.

Who was the first person to estimate the size of the Earth within approximately 8% of its true size based on the geometric observations of travelers?

The materials that formed the Earth and the ocean were formed within starts billions of years ago.