1. The formulation of Kepler laws of planetary motion relied on the data & observations of which scientist other than Kepler?
Tycho Brahe
2. Which of these describes the speed of a moon as it draws closer to the planet it orbits?
The speed of the moon increases
3. Decreases & Decreases
4. Pulled & gravitational
5. The movement of planets within the solar system
The movement of planets within the solar system is known as planetary motion. Planetary motion refers to the way planets move around the Sun in elliptical orbits. This concept was extensively studied by the famous astronomer Johannes Kepler. Kepler formulated three laws of planetary motion based on the data and observations of another well-known scientist, Tycho Brahe.
1. The formulation of Kepler's laws of planetary motion relied on the data and observations of Tycho Brahe, a Danish astronomer. Tycho Brahe made meticulous and accurate observations of the positions of planets, which were crucial in guiding Kepler's research and the final formulation of his laws.
2. As a moon draws closer to the planet it orbits, its speed increases. This is due to gravitational pull. According to Kepler's laws, the closer a celestial body gets to the object it orbits, the faster it travels. This is a result of the conservation of angular momentum – as the distance decreases, the velocity of the moon increases to maintain the balance between the rate of movement and the size of the orbit.
3. The phrases "Decreases & Decreases" do not seem to be related to the movement of planets within the solar system. It is unclear what context these phrases are referring to, so it is difficult to provide an explanation.
4. The terms "Pulled" and "gravitational" seem to describe the force acting on celestial bodies in the context of planetary motion. The force responsible for the movement and orbit of planets is the gravitational force. Planets are pulled towards the Sun by the gravitational attraction between them. This force keeps the planets in their orbits and governs their motion.
Overall, the movement of planets within the solar system follows specific laws, known as Kepler's laws of planetary motion, which were based on the observations of Tycho Brahe. These laws explain how planets move in elliptical orbits, how their speeds vary as they get closer to the Sun or orbiting objects, and how gravitational forces play a crucial role in shaping their motion.