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FDSCI 101 S17 Day 2.c

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by

Richard Datwyler

on 12 October 2017

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Transcript of FDSCI 101 S17 Day 2.c

LIGHT
&
Observational Science

Today we are going to focus on a type of case study to help us understand and reinforce the foundations of scientific study.
Telescope
Universe
Observation and Inference

AND LIGHT
With this outline let us direct our thoughts to the telescope.

The purpose being to see how our understanding of science or even the world around us, changes as our technology changes.

This is the essence of Exploration and Discovery.
We see things, and learn from them, they shape our world and cause us to change the way we see and learn, a cycle.
So here's the science.

What is out there?
How can we learn about it?

Space, the final frontier.....

Test review question 1

Galaxies are seen moving away from us because
A. Space itself is expanding
B. Galaxies are traveling through space
C. Earth is at the center of the universe
D. Starlight is forcing the galaxies apart

Test question two

Approximate the number of stars in the universe
A. 1 billion
B. 100 billion
C. 1 million million
D. 100 Billion Billion +

We learn through observation, and we make inferences from what we observe.
How can we learn about Stars ? or Galaxies?
What can we learn? (for instance about a distant star?)
a. Brightness
b. Temperature
c. Motion
d. Composition
e. All of these and more
Recap. We can learn about distant object by observation, and inference.
A star
Distance
Velocity
Rotational motion
Planetary objects
Temperature
Composition
Age
Size
The universe is about.....
A. 7,000 years old
B. 4.54 Billion years old
C. 13.7 Billion years old
D. Eternal, ie., it lacks a beginning or an end
At the Big Bang, everything was condensed into a hot, dense, small sphere, and then everything in that sphere exploded into the universe - like shrapnel from a grenade.
A. True
B. False
Full transcript