Solar system, Stability of Orbital Motions & Satellites (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Components of our solar system
Components of our solar system
One star (Sun), 8 planets, dwarf planets, moons
Term: Sun at centre of solar system
Term: Sun at centre of solar system
Heliocentric
Examples of dwarf planets
Examples of dwarf planets
Pluto and Ceres
Galaxy containing our solar system
Galaxy containing our solar system
Milky Way
8 planets in order from the Sun
8 planets in order from the Sun
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Main composition of inner planets
Main composition of inner planets
Rock
Main composition of outer planets
Main composition of outer planets
Gas
Why larger planets have rings
Why larger planets have rings
Strong gravitational fields attract debris
Geocentric model: what's at the centre?
Geocentric model: what's at the centre?
Earth
Heliocentric model: what's at the centre?
Heliocentric model: what's at the centre?
Sun
Why Mars shows retrograde motion
Why Mars shows retrograde motion
Earth orbits the Sun faster than Mars
Galileo's observation supporting heliocentric model
Galileo's observation supporting heliocentric model
Moons orbiting Jupiter
Kepler's discovery about planetary orbits
Kepler's discovery about planetary orbits
Planets orbit in ellipses, not perfect circles
Why planets accelerate without increasing speed
Why planets accelerate without increasing speed
Velocity constantly changes due to changing direction
If orbital radius decreases, orbital speed must...
If orbital radius decreases, orbital speed must...
Increase (to maintain stable orbit)