Download presentation
Presentation is loading. Please wait.
Published byEvelyn Armstrong Modified over 9 years ago
1
Universe Mr. Skirbst Physical Science Topic 24
2
Watch Videos: VIDEO: The Universe CLIP: Understanding the Universe CLIP: Early Theories about the Universe CLIP: Matter & Energy
3
Universe Big Bang Theory - the belief that the universe began with an explosion from a single point containing all the matter of the present universe
4
Universe Big Bang Theory - states that the universe is currently expanding in all directions
5
Universe Doppler Effect - apparent change in wavelength due to the movement of an object http://astro.unl.edu/classaction/animations/lig ht/dopplershift.html
6
Doppler Effect Red Shift - spectrum shifted to red - indicates movement AWAY from an observer
7
Doppler Effect Blue Shift - spectrum shifted to blue - indicates movement TOWARD an observer
10
Features of the Universe Constellations - groups of stars that appear to form patterns in the sky
11
Features of the Universe Galaxies - major feature of the universe - huge collection of billions of stars
12
3 Types of Galaxies 1. Spiral - shaped like a pinwheel You are here!
13
3 Types of Galaxies 2. Elliptical - varies from spherical to disk-like
14
3 Types of Galaxies 3. Irregular - no definite shape
15
Gravity - Force holding galaxies together - Matter “clumped” together by gravity
16
Calculating Gravity G = 4 pi 2 L / T 2 pi = 3.14 L =.5m T = 1.4 sec where:
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.