Eccentricity

Front

What is the eccentricity of a perfect circle?

Back

0

Front

What is the range of eccentricity values for conic sections?

Back

0 to 1 for ellipses, 1 for parabolas, greater than 1 for hyperbolas.

Front

What does an eccentricity of 0 indicate about a conic section?

Back

It indicates that the conic section is a perfect circle.

Front

What does an eccentricity of 1 indicate about a conic section?

Back

It indicates that the conic section is a parabola.

Front

What does an eccentricity greater than 1 indicate about a conic section?

Back

It indicates that the conic section is a hyperbola.

Front

How does eccentricity relate to the shape of an ellipse?

Back

The closer the eccentricity is to 0, the more circular the ellipse; the closer it is to 1, the more elongated it is.

Front

What is the eccentricity of Mercury's orbit compared to Mars?

Back

Mercury has a higher eccentricity than Mars, indicating a more elongated orbit.

Front

What is the period of Earth's orbit around the Sun?

Back

1 year.

Front

At which point in an orbit is the orbital velocity of a planet the greatest?

Back

At periapsis (closest point to the Sun).

Front

What is the formula for calculating eccentricity (e) of an ellipse?

Back

e = √(1 - (b²/a²)), where a is the semi-major axis and b is the semi-minor axis.