Kepler's Laws — Quiz Answers

Kepler's third law describes how a planet's average distance from the Sun, R (in astronomical units, AU), is related to its orbital period, T (in Earth years). T^2=R^3 Planet X is 9 AU from its star. What is Planet X's approximate orbital period?

Kepler's third law describes how a planet's average distance from the Sun, R (in astronomical units, AU), is related to its orbital period, T (in Earth years). T^2=R^3 Planet A's mass is 4×10^24 kg and it is 1 AU from its star. Planet B's mass is 6×10^25 kg and it is 3 AU from the same star. Choose the correct answer from each drop-down menu to complete the statement.

Two planets, Alpha and Beta, orbit the same star. Alpha is 2 AU from the star and Beta is 8 AU away. Classify each statement based on whether it describes Planet Alpha or Planet Beta. Drag each statement to the correct box.

Match each planet with its corresponding orbital property.

Kepler's third law describes how a planet's average distance from the Sun, R (in astronomical units, AU), is related to its orbital period, T (in Earth years). T^2=R^3 A planet is located 4 AU from its star. Enter the planet's approximate orbital period in the box.

Kepler's third law describes how a planet's average distance from the Sun, R (in astronomical units, AU), is related to its orbital period, T (in Earth years). T^2=R^3 A planet orbits its star once every 8 Earth years. Enter the planet's approximate orbital distance in the box.

Choose the correct answer from each drop-down menu to complete the statement.

Which statement best explains why Io experiences more eclipses per month than Callisto?

Assume that astronomers discover a new moon orbiting Jupiter at a distance of 0.010 AU. Approximately how many eclipses would the new moon experience per month?