Chapter 1: Think like me Grab an ABCD page from Reading Assignment - - PowerPoint PPT Presentation

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Chapter 1: Think like me Grab an ABCD page from Reading Assignment - - PowerPoint PPT Presentation

Aug 27, 2022 391 likes •647 views

Chapter 1: Think like me Grab an ABCD page from Reading Assignment to be completed in Canvas me if you dont have one due on Monday, August 27th A B HW1 posted to website under: http://www.physics.utah.edu/~wik/courses/astr1060fall2018/ C

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Chapter 1: Think like me

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Grab an ABCD page from me if you don’t have one

C D B A

(Hint: it looks like this) Reading Assignment to be completed in Canvas due on Monday, August 27th HW1 posted to website under: http://www.physics.utah.edu/~wik/courses/astr1060fall2018/ homework.html due on Wednesday, September 5th

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Updated Info

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Forgot to mention I think, well, just in case:

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Silence cell phones, don’t use ‘em, and use laptops for note taking only

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Doing other things on devices distracts those around you Taking HAND-WRITTEN notes improves retention (whether or not you ever look at them again)

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Most Popular Requested Topics

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Nothing / Blank Black Holes Anything / Everything Aliens / ET life Dark Matter Dark Energy SpaceX / Human exploration 56 30 25 11 9 6 6

  • ut of 157

potential responses

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe 6

TUESDAY | AUGUST 28 | 6:00 p.m.

Aline W. Skaggs Bldg. (ASB) Room 220

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Survey Responses

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0% 25% 50% 75% 100% I have looked through a telescope

Yes No

0% 25% 50% 75% 100% I know the names of the 8 planets

Yes No

0% 25% 50% 75% 100% I have taken an astronomy class

Yes No

0% 25% 50% 75% 100% I have seen the Milky Way before

Yes No

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Survey Responses

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0% 25% 50% 75% 100% 8x10^9 / 2x10^6 = four thousand

Yes No

0% 25% 50% 75% 100% I am pretty good at algebra

No Yes

0% 25% 50% 75% 100% F = 9/5 × C + 32, F = 50 (C=10)

No Yes

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Survey Responses

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0% 25% 50% 75% 100% I know a "flat earther"

Yes No

0% 25% 50% 75% 100% I believe that aliens have visited Earth

No Yes Maaaaaybe

0% 25% 50% 75% 100% I believe that intelligent ETs exist

No Yes Maaaaaybe

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe 10

D) Comet C) Bright Stars A) The Milky Way B) Clouds of Magellan

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Scale Models

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scale model of Manhattan island by Joe Macken

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If the Sun were the size of a softball (~4” in diameter), how big would the Earth be?

A) Golf ball (1.7”) B) Coffee bean (0.4”) C) Sesame seed (0.1”) D) Mustard seed (0.03”)

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe 13

If the Sun were the size of a softball (~4” in diameter), how far away would the Earth be?

A) One step (3’) B) Across the table (10’) C) Across the room (30’) D) President’s Circle (300’)

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Relative sizes of the Sun, Jupiter, Earth, and the Moon Jupiter is ~5x farther from the Sun than is the Earth

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

How far away is the nearest star, if the Sun is a softball?

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Scale by light-speed

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Powers of Ten:

https://www.youtube.com/ watch?v=0fKBhvDjuy0

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Scientific Method

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Scientific Notation

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106 = 1,000,000 5x109 = 5,000,000,000 2x102 x 3x103 = = one million = five billion 6x105 = 600,000 = six hundred thousand Calculator / Computer shorthand: 2e-7 = 2x10-7 = 0.0000002 (on exams and assignments, use the correct notation, not this shorthand)

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Reading a Graph

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Astronomer’s Height

A

Short Tall

B

Astronomer’s Height Short Tall

Which y-axis is IQ and which is weight?

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

Real Life Example

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Brightness Color

“Blue” “Red”

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Hydrogen Wall

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Fall 2018: Chapter 1 ASTR/PHYS 1060: The Universe

To conclude (or really, begin):

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Because light travels at a finite speed, looking far away is looking into the past 1011 Suns light 102-5 yr old There are ~100 billion stars in our Galaxy, the Milky Way We are made of stardust Nearby galaxies light 106+ yr old There are ~100 billion galaxies in the visible universe Distant galaxies light 109+ yr old

Gemini Planet Imager HR 8799

Most stars host planets (although mostly uninhabitable by our standards)