1.4 Kepler's Laws and Seasons

Front

What date does the Tropic of Capricorn receive direct rays from the sun?

Back

December 21

Front

Which hemisphere experiences summer when the Earth is at position A in its orbit?

Back

Northern hemisphere

Front

What is the study of space called?

Back

Astronomy

Front

What is the maximum eccentricity an ellipse can have?

Back

1

Front

Which diagram represents a planet with the least eccentric orbit?

Back

Diagram 1

Front

What are Kepler's Laws of Planetary Motion?

Back

1. Planets move in elliptical orbits with the Sun at one focus. 2. A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. 3. The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

Front

What is eccentricity in the context of orbits?

Back

Eccentricity is a measure of how much an orbit deviates from being circular, ranging from 0 (circle) to 1 (parabola).

Front

What is the significance of the Tropic of Cancer?

Back

The Tropic of Cancer is the latitude where the sun is directly overhead at noon on the summer solstice, around June 21.

Front

How do the seasons change on Earth?

Back

Seasons change due to the tilt of the Earth's axis and its orbit around the Sun, affecting the angle and duration of sunlight received.

Front

What is the difference between perihelion and aphelion?

Back

Perihelion is the point in a planet's orbit where it is closest to the Sun, while aphelion is the point where it is farthest from the Sun.