Earth & Space Midterm Review Part 2

Front

What is the significance of the fossil record in understanding extinction?

Back

The fossil record shows that some extinct organisms closely resemble organisms that are still alive today, indicating that organisms are related by a common ancestor that evolved over a very long period of time.

Front

Why do Earth scientists use mathematical models?

Back

Earth scientists use mathematical models because it is physically impossible to set up a well-designed experiment large enough to perform investigations directly, and these models allow investigations that take years to be modeled in days or hours.

Front

What is a key characteristic of radiation?

Back

Radiation does not need a medium to travel through; it can travel through a vacuum.

Front

What are some problems associated with the increased use of nuclear energy?

Back

Problems include the cost of building safe nuclear facilities, major hazards involved in nuclear waste disposal, and the concern of the possibility of a serious nuclear accident.

Front

What form of electromagnetic energy is responsible for heat on Earth?

Back

Radiation is the form of electromagnetic energy produced by stars that is responsible for heat on Earth.

Front

What is a common misconception about radiation?

Back

A common misconception is that radiation needs a medium to travel through; in reality, it can travel through a vacuum.

Front

What is the role of a common ancestor in evolution?

Back

A common ancestor is an organism from which different species have evolved over time, explaining similarities between extinct and living organisms.

Front

How do mathematical models benefit Earth science investigations?

Back

Mathematical models allow for the analysis of large amounts of information quickly and can simulate complex phenomena that would be impractical to study directly.

Front

What are the three methods of heat transfer?

Back

The three methods of heat transfer are conduction, convection, and radiation.

Front

What is the primary concern regarding nuclear waste?

Back

The major hazard involved in nuclear waste disposal is ensuring that it is stored safely to prevent contamination and harm to the environment.