Integrated Physical Science Orbital Motion

Front

What is the relationship between a planet's distance from the sun and its speed of motion?

Back

A planet moves slower when it is farthest from the sun.

Front

Between which two points does a planet move the fastest in its orbit?

Back

The planet moves the fastest between Position A to B.

Front

If two satellites of equal mass are in circular orbit around a planet, which satellite experiences a stronger gravitational force if one is twice as far away?

Back

Satellite A experiences a stronger gravitational force.

Front

What happens to the gravitational force between two objects as the distance between them decreases?

Back

The gravitational force increases as the distance decreases.

Front

What shape best describes a planet's orbit around the Sun?

Back

An ellipse.

Front

What is the law of universal gravitation?

Back

The law states that every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is Kepler's First Law of Planetary Motion?

Back

Kepler's First Law states that planets move in elliptical orbits with the Sun at one focus.

Front

What is the significance of the semi-major axis in an elliptical orbit?

Back

The semi-major axis is the longest radius of an ellipse and determines the size of the orbit.

Front

How does the gravitational force change with distance according to Newton's law of gravitation?

Back

The gravitational force decreases with the square of the distance between the centers of two masses.

Front

What is the concept of aphelion and perihelion in orbital motion?

Back

Aphelion is the point in the orbit of a planet where it is farthest from the Sun, while perihelion is the point where it is closest.