CP 3 The Ancient Roots of Science Flashcards
What is Scientific thinking ?
Scientific thinking is based on everyday ideas of observation and trial-and-error experiments.
What did ancient cities achieve in astronomy
- Tracking the seasons
- Daily timekeeping
- Calendar
- Monitoring lunar cycles
- Monitoring planets and stars
- Predicting eclipses
How did astronomical observations benefit
ancient societies?
- Keeping track of time and seasons
– for practical purposes, including
agriculture
– for religious and ceremonial purposes
Where did most of our math and science come from
Middle east
what proved plato and aristotle wrong about the universe being at the centre of the universe
Planet retrograde (planets appear to stop,
back up, then go forward again.
how did brache kepler and tycho work together
Brache Hired Kepler, who used Tycho’s observations to discover the truth abt planetary motion
What are keplers 3 laws of planetary motion
1) The orbit of each planet around the Sun is an ellipse with the Sun at one focus
2) As a planet moves around its orbit, it sweeps out equal areas in equal times
3) More distant planets orbit the Sun at
slower average speeds
What were 3 objections rooted in the aristotlian view
- Earth could not be moving because objects in air would be left behind.
- Non-circular orbits are not “perfect” as heavens should be.
- If Earth were really orbiting Sun, we’d detect stellar parallax.
How did gelileo over come first objection (objects in air would be left behind.)
Galileo’s experiments showed that objects in air would stay with Earth as it moves
How did galileo beat second objection(Non-circular orbits are not “perfect” as heavens)
looked at other planets proving their imperfection
Overcoming the third objection (parallax):
If stars were much farther away, then lack of detectable parallax was no longer so troubling
what is The universal law of gravitation
Every mass attracts every other mass
Elipses can be:
Bound (in orbit) or unbound (looks like parabola)
