Exam 1: The Origin of the Ocean

High levels of ____ could indicate life on other planets.

Since the formation of our ocean, Earth has made approximately ____ orbits around the galaxy.

What type of marine scientist studies the Earth's ocean, continents, and climate?

What conditions are necessary to maintain an ocean of liquid water permanently? Why is having a liquid ocean so important?

What planet is an example that others planets besides Earth have a plethora of water?

Studying microbes in extreme environments is tricky because when you retrieve the rocks they often change what they are doing.

What was the main requirement for the development of life on Earth?

The only aspect of science is the gathering of information and the studying of that information.

There were multiple sources of water that contributed to the ocean. How was the majority of the ocean's water formed?

Describe how the Earth's ocean accumulated. What aspects of the initial atmospheric conditions prohibited the formation of liquid water? Once in place, how did the water become saline?

The expansion of the universe that began during the big bang event continues to this day.

The scientific method is a useful tool beyond the confines of science fields. It can be used in everyday life, by any person.

The outermost gases of early Earth were initially destroyed by radiation from the sun, but the underlying atmosphere remained intact.

The life history of a star is dependent upon what?

In the Insight into National Geographic Explorer, Dr. Hand suggests that studying life in extreme environments is important for what reason?

Scientists believe that some answers to proposed question will ultimately never be known.

Oceanography encompasses aspects of many other science fields such as geology, physics, biology, and chemistry.

Water in its liquid state is common in our solar system.

A(n) ____ is a test involving manipulations made on conditions of a particular observation.

How long did the process of density stratification of Earth last?