Gravity and Orbits

Start with gravity

A useful starting point is the mind map on gravity and space. It outlines how gravitational force depends on mass and distance, and includes a relationship between weight and mass. Use it to organize the ideas before moving on to orbits. The flashcards titled Science - Gravity - Earth and Space provide questions about gravity and the factors it depends on.

For another view, the Physics 2F mind map describes planets orbiting the Sun as gravity pulls them toward it. It also lists the planets, with Pluto identified as a dwarf planet.

Move on to satellites and orbits

The map on satellites, gravity and comets introduces geostationary satellites and low polar orbit satellites. It describes geostationary satellites as staying in a fixed position above Earth's surface and being used for communications. Another map on satellites, gravity and circular motion distinguishes natural satellites, such as the Moon, from artificial satellites placed in space by people.

For further practice, Orbital Mechanics is a flashcard deck with questions about orbital mechanics and terms used to describe orbits. The map on circular motion describes how direction and velocity change as an object moves around a circle.

Combine maps and quizzes

Read a mind map first and use its branches to organize the ideas. Then try the Satellites quiz. Afterward, return to a satellite map to look over the material again. The page also lists a Satellites mind map, so check the resource type when choosing between them.

Use this section within the unit

Gravity and Orbits is a section of Astronomy and Space in Physics. The resources here offer several ways to study its ideas, from short flashcard questions to connected notes in mind maps. Choose a map and a quiz to use alongside each other.