Table of Contents

## What does the Drake equation describe quizlet?

– Drake Equation- lays out the factors that are important in determining the number of transmitting civilizations. Fnow- is the fraction of the civilization bearing planets that currently have a civilization.

### What does the Drake Equation estimate?

The Drake Equation is used to estimate the number of communicating civilizations in our galaxy, or more simply put, the odds of finding intelligent life in the Milky Way.

#### What question does the Drake Equation attempt quizlet?

What question does the Drake equation attempt to answer? What is the number of technological civilizations in the Milky Way Galaxy? Which term of the Drake equation is completely unknown and the hardest to determine? average lifetime of a technologically competent civilization.

**Which of the following best describes why the Drake equation is useful in the study of astrobiology?**

Which of the following best describes why the Drake equation is useful in the study of astrobiology? It helps us think about the factors that would determine the likelihood that we could discover other civilizations. It would prove that it is possible for a civilization to advance without destroying itself.

**How is the Drake equation useful quizlet?**

Which of the following best describes how the Drake equation is useful? It helps us understand what we need to know in order to determine the likelihood of finding other civilizations. Suppose it turns out that one in 1 million stars has a planet that at some point in its history is home to an advanced civilization.

## What evidence do scientists have that life on Earth began in the sea quizlet?

What evidence do scientists have that life on Earth began in the sea? The oldest fossils are the remains of sea creatures. Mars and Europa are two Solar System bodies that are considered possible habitats for Earth-like life.

### What does each variable in the Drake equation represent?

R* = The rate of formation of stars that are suitable for the development of intelligent life. fp = The fraction of those stars with planetary systems. ne = The number of planets per solar system that have an environment suitable for life. fl = The fraction of suitable planets on which life actually appears.

#### When was the Drake equation created?

1961

In 1961, astrophysicist Frank Drake developed an equation to estimate the number of advanced civilizations likely to exist in the Milky Way galaxy. The Drake equation (top row) has proven to be a durable framework for research, and space technology has advanced scientists’ knowledge of several variables.

**When we analyze whether a world is a possible home to life?**

Oxygen produced by life was removed from the atmosphere by oxidation reactions with surface rocks. When we analyze whether a world is a possible home to life, the key thing we look for is______________. The past or present existence of water.

**What is the dominant factor in the life of a star?**

From birth to death, the internal pressure of a star created by its own weight is the most dominant factor in the star’s life.