1.34 describe the differences in the orbits of comets, moons and planets

1.34 describe the differences in the orbits of comets, moons and planets

Comets: Comets orbit the Sun. Their orbits are very elongated. At times they are very close to the Sun , while at other times they are found at the outer reaches of the Solar System. As a comet gets close to the Sun, the gravitational forces acting upon it increase and it speeds up. At the opposite end of its orbit, a long way from the Sun, the gravitation forces are smaller, so the comet travels at its slowest speed.

Moons: Moons orbit a planet. The Earth has just one moon.The Moon, like the Earth spins on its axis, but much more slowly than the Earth turns. It completes one full rotation every 29.5 days. Because the time it takes to complete one orbit around the Earth is the same as the time for one rotation. The Moon always keeps the same part of its surface facing the Earth.

Planets: Planets orbit the Sun. The closest planet follows a much more tightly curved path than the furthest one. They all move in ellipses.