Science Kepler Crossword 2 Flashcards
The variable that determines whether an ellipse is more elongated or more circular
Eccentricity
The farthest distance between a star and its orbiting planet
Aphelion
The area bounded by the center of a star and the orbital path of a planet must have equal area for equal time of orbit (Which law)
Kepler’s second law
The closest distance between a star and an orbiting planet
Perihelion
The orbiting planet or object must have a speed directed perpendicular to the gravitational force between it and the star in order to slingshot around it instead of crashing into it, thus affecting the orbital path
Velocity
Came up with a heliocentric model where the sun is orbited by planets in perfect circles
Copernicus
The length between the center of star and planet
Distance
When an orbiting planet moves in this direction relative to a star while in orbit, it slows down
Moves farther
When an orbiting planet moves in this direction towards the star it speeds up
Moves closer
The shape of the orbit where the planet moves at a constant speed
Circle
The force that acts between a star and object to create orbit pattern
Gravity
Kepler’s mentor who also observed Mars
Tycho Brahe
He said the Earth was the center of the universe with other objects orbiting it
Ptolemy
Which planet did Brahe and Kepler observe to create Kepler’s laws
Mars
The squares of the orbital periods of the planets are directly proportional to the cubes is the semi-major axes of their orbits (Which law)
Kepler’s Third Law
