Circular vs Elliptical Orbits

Part of Orbits · Section 3 of 8

DiagramUnit: Space PhysicsGCSE

This diagram covers Circular vs Elliptical Orbits within Orbits for GCSE Physics. Revise Orbits in Space Physics for GCSE Physics with 13 exam-style questions and 10 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 3 of 8 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.

📊 Circular vs Elliptical Orbits

Two-panel Studio Render comparing circular and elliptical orbits. Left: satellite on cyan circular orbit around Earth, amber gravity arrow inward, cyan velocity arrow tangential — constant speed, constant altitude. Right: satellite on amber elliptical orbit, shown slow at apogee and fast at perigee — faster when closer, slower when far.

Practice questions for Orbits

What is a protostar?

A. A cloud of gas and dust in space
B. A star that is forming from a collapsing cloud of gas and dust
C. A star that has used up all its hydrogen
D. A star that has exploded as a supernova

1 markfoundation

Explain why a main sequence star remains stable (in equilibrium) for billions of years.

2 marksstandard

Quick recall flashcards

What is Low Earth Orbit (LEO)?

Orbit at 200-2000 km altitude with ~90 minute orbital period. Used for ISS, imaging, and Earth observation

What is a polar orbit used for?

Mapping - the satellite orbits at ~800 km altitude covering the whole Earth as the planet rotates beneath it

What Keeps Objects in Orbit?

Orbital Speed and Radius

13 questions on Orbits — practise free

Instant marking, adaptive difficulty and spaced-repetition flashcards — all aligned to your exam board.

Start revising free →