Syllabus Aims…
8.2 know that:
- the universe is a large collection of billions of galaxies
- a galaxy is a large collection of billions of stars
- our solar system is in the Milky Way galaxy.
8.3 understand why gravitational field strength, g, and know that it is different on other planets and the Moon from that on the Earth
8.4 explain that gravitational force:
- causes moons to orbit planets
- causes the planets to orbit the Sun
- causes artificial satellites to orbit the Earth
- causes comets to orbit the Sun
8.5 describe the differences in the orbits of comets, moons and planets
8.6 use the relationship between orbital speed, orbital radius and time period:
orbital speed = (2 × π × orbital radius)/time period
v=2rπ/T
Resources…
Use these PowerPoint for a quick review….
- Lesson 1 Days Years and Seasons
- Lesson 2a 2b Phases of the Moon and Eclipse
- Lesson 3a 3b Gravitational Forces and Orbits
Main lesson PPT….
Further Resources….
- Speed of Light Calc
- Graphs for Solar System
- Arrokoth the most distant object ever visited (Wider Reading)
- Voyager 2 Back Online (Wider Reading)
- Investigating circular motion Practical
- Investigating circular motion Practical Results
- Lesson 2 Maths Challenge Worksheet
- Lesson 2 Orbits Exam Questions
- Gravitational Force F=ma extra help video
- Gravitational Fields g =GM/r^2 extra help extension video
- Circular Velocity v= 2πr/T extra help video
- iPad QR Code Reader
- Android QR Code Reader
Useful Videos…
8B Astrophysics Orbits iGCSE Key Physics Section Summary
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8B Astrophysics Orbits iGCSE Key Physics Section Summary
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Kepler’s First Law of Motion - Elliptical Orbits (Astronomy)
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Q1 8B Astro June 2018 iGCSE Physics
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Planetary Conjunction 2023 23rd Feb #shorts
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Jupiter and 4 moons with a Barlow 3x lens and 15mm eyepiece