Across
- 4. The orbital shape described in Kepler’s first law.
- 7. Conserved rotational quantity equal to I·ω.
- 9. Force that keeps an object moving in a circle, always directed toward the center.
- 10. Astronomer who created the three laws of planetary motion.
Down
- 1. Time it takes an object to complete one full orbit.
- 2. The constant G in Newton’s law of universal gravitation.
- 3. Point in a planet’s orbit where it is closest to the Sun.
- 5. Minimum speed needed to break free from a planet’s gravity.
- 6. Difference in gravitational pull that causes tides.
- 8. Apparent outward force felt in a rotating frame; a pseudo-force.