space

Front

What is the relationship between the period of revolution and distance from the sun?

Back

The period of revolution increases with distance from the sun, following Kepler's Third Law of Planetary Motion.

Front

Define eccentricity in the context of orbits.

Back

Eccentricity is a measure of how much an orbit deviates from being circular, calculated as the ratio of the distance between the foci to the length of the major axis.

Front

If planet A has a greater mean distance from the sun than planet B, what can be inferred about their revolution periods?

Back

Planet A's revolution period is longer than that of planet B.

Front

What is the average distance between the sun and the asteroid belt located between Mars and Jupiter?

Back

The average distance is approximately 390 million kilometers.

Front

What is the best evidence for the Earth's rotation?

Back

The motion of a Foucault pendulum is the best evidence for the Earth's rotation.

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 major axis in an elliptical orbit?

Back

The major axis is the longest diameter of the ellipse, which helps determine the size and shape of the orbit.

Front

How does the distance from the sun affect a planet's orbital speed?

Back

Planets that are closer to the sun move faster in their orbits than those that are farther away.

Front

What is the formula for calculating the eccentricity of an orbit?

Back

Eccentricity (e) = distance between foci (c) / length of major axis (a).

Front

What is the average distance from the sun to Earth?

Back

The average distance from the sun to Earth is about 93 million miles (150 million kilometers).