The Universe6th Grade Science

I. What is it?

A. Empty SpaceNothing

B. Energy8th Grade

C. Dark Energy(Expansion force)

D. Matter7th Grade

E. Dark Matter(unseen matter)

II. Big Bang

A. Universe is expand1. Hubble’s Law

i. Farther away then the faster it is moving

2. Cosmic Radiationi. Energy glow from all over the universe (from large explosion)

II. Big Bang

B. Find starting position and time.1. Microscopic point in space (smaller than atom)2. 13.7 billion years ago

C. No sound in space (was meant as a joke)

III. SizeA. Scientific Notation

1. 1,200 = 1.2 x 103

2. 9,500,000,000,000,000 = 9.5 x 1015

B. Distances1. Diameter Earth 1.3 x 107 m2. Diameter Sun 1.4 x 109 m3. Diameter Andromeda 2 x 1021 m4. Known Universe 1 x 1026 m

100,000,000,000,000,000,000,000,000 m

C. Light Year1. Distance light travels in one year2. Speed of light is 300,000 km/second

IV. Galaxies

A. Huge cluster of stars, dust, and gasB. Held together by gravityC. Number (125 billion)D. Types

1. Spiral2. Elliptical3. Irregular4. Quasars

i. Very distantii. Very brightiii. New Galaxy

IV. Galaxies

E. Milky Way1. 25,000 light years to center

F. Biggest (IC1101 = 60 x our)G. Farthest (1689-2D1 13 billion LY)

V. Future

A. Expand Forever1. End cold and dark2. Dark Energy – Increasing speed every day

B. Big Crunch1. Return to original point in space2. Dark Matter - 90% of matter can not be seen

i. Stars in galaxies should be flying away but don’t