Chapter 1 Flashcards
What is Astronomy?
A way of viewing the Universe.
- Laws of nature are universal.
What is Science?
A way of figuring out the true nature of nature.
What is the Scientific Method?
Systematic way of explaining the world by developing and testing new ideas.
- uses logic and skepticism to make inferences about nature.
What is the Scientific Method order?
Observation - Hypothesis - Prediction - Test (no = change hypo) - yes - more prediction
What is the Scientific Theory?
tried and tasted descriptions of nature based on data.
- never 100% provable, stand time, explains what we see
Why is Pluto no longer a planet?
It has a different orbit and is a lot smaller than other planets/more similar to other dwarf planets.
What is an AU?
The distance from the sun to the earth (8 lm, 150 million miles, 93 million km)
What is a light year?
The distance light travels in 1 year (10 trillion km)
- Max Speed, 300,000 km/s
What is closest? (Milky Way, Andromeda, Pinwheel, Crebula)
Crebula, Milky Way, Andromeda Galaxy, Pinwheel galaxy