Solar system (Edexcel GCSE Physics): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Components of our solar system
Components of our solar system
Sun (1 star), 8 planets, dwarf planets, moons
Meaning of heliocentric
Meaning of heliocentric
Sun at the centre of the solar system
Two examples of dwarf planets
Two examples of dwarf planets
Pluto and Ceres
Galaxy containing our solar system
Galaxy containing our solar system
Milky Way galaxy
8 planets in order from the Sun
8 planets in order from the Sun
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Composition of inner planets (Mercury, Venus, Earth, Mars)
Composition of inner planets (Mercury, Venus, Earth, Mars)
Rock
Composition of outer planets (Jupiter, Saturn, Uranus, Neptune)
Composition of outer planets (Jupiter, Saturn, Uranus, Neptune)
Gas
Why larger planets have rings
Why larger planets have rings
Strong gravitational fields attract debris
What the geocentric model proposed
What the geocentric model proposed
Earth at centre of universe, everything orbits Earth
Evidence for heliocentric model from Mars
Evidence for heliocentric model from Mars
Mars' retrograde motion (apparent backwards motion)
Galileo's observation supporting heliocentric model
Galileo's observation supporting heliocentric model
Moons orbiting Jupiter
Shape of planetary orbits (Kepler's discovery)
Shape of planetary orbits (Kepler's discovery)
Ellipses, not perfect circles
What causes planets to orbit the Sun
What causes planets to orbit the Sun
Gravitational force causing constant direction change
If orbital radius decreases, gravitational attraction...
If orbital radius decreases, gravitational attraction...
Increases
If orbital radius decreases, orbital speed must...
If orbital radius decreases, orbital speed must...
Increase (to maintain stable orbit)