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3 cards from this section. Quick, good the night before a test.
What shape are planetary orbits according to Kepler's First Law?
Think of the shape that is flat and circular.
What does perihelion mean?
Focus on the word 'peri-' meaning near.
What is the shape of planetary orbits according to Kepler's First Law?
Think of a stretched circle.
True or False: Kepler's Laws apply only to planets within our solar system.
Consider how orbits work in different star systems.
A planet has a semi-major axis of 5 AU. Calculate the time it takes for this planet to orbit the Sun.
Don't forget to use the correct formula!
If a planet moves faster in its orbit at perihelion, explain the relationship with its gravitational pull.
Relate this to the concept of forces in orbital mechanics.
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