Big Bang Theory

Front 1

#1 Force of nature

Back 1

Strong Nuclear Force-

Front 2

what does strong nucleus force do

Back 2

holds nucleus of atom together

Front 3

#2 force of nature

Back 3

Weak Nuclear Force-Distances less than the size of an atom’s nucleus

Front 4

what does weak nucleus force do

Back 4

responsible for 1)neutrinos and 2) atom’s radioactive decay.

Front 5

primevil fireball contained what

Back 5

alltypes of radiation

Front 6

Fireball radiation contained

Back 6

matter, photons, neutrinos, quarks

Front 7

when fireball expanded and cooled , what form of matter was there

Back 7

basics: neutrons, protons, electrons

Front 8

how hot was fireball

Back 8

10 ^ 32 K

Front 9

Strong Nuclear Force distances

Back 9

very short distances

Front 10

Weak Nuclear Force-Distances

Back 10

Distances less than the size of an atom’s nucleus

Front 11

#3 force of nature

Back 11

gravitational......gravity

Front 12

gravitational force/gravity

Back 12

Attraction of two bodies of mass to each other,

Front 13

Gravity diminishes
(2 variables)

Back 13

1) square of DISTANCE and 2) MASS of the objects

Front 14

#4 fORCE OF UNIVERSE

Back 14

Electromagnetic Force

Front 15

eLECTROMAGNETIC FORCE

Back 15

Magnetism and all other forms of radiation such as light, radio-waves, etc.

Front 16

Name the four forces of the universe

Back 16

1)Strong nuclear force
2)Weak Nuclear force
3)Gravitational
4)Electromagnetic

Front 17

Grand Unified Theory

Back 17

elementary forces that unites the weak, strong, electromagnetic, and gravitational interactions into one field theory

Front 18

Planck Time

Back 18

The first 10-43 second after the explosion

Front 19

annihilation reaction

Back 19

a reaction in which a particle (matter)and its antiparticle (see antimatter) collide and disappear

Front 20

annihilation reaction: remember every action has equal and opposite reaction

Back 20

new energy created:
1) GAMMA ray
2)revert back to different matter/antimatter

Front 21

after universe expands for 1 second , what is new temperature

Back 21

10^10 K

Front 22

after universe expands for 3 minutes, what is new temperature

Back 22

10 degrees K

Front 23

predominate materials, at least until star formation and fusion.

Back 23

Hydrogen, Helium, and some Lithium

Front 24

AS Universe continues to expand,

Back 24

1) density lessens (spreads out),
2)cooling continues

Front 25

as UNIVERSE COOLS

Back 25

less energy.....more matter

Front 26

4 evidence of big bang

Back 26

1)1) Discovery by Penzias and Wilson
2) The Expanding Universe
3) finding center of Universe,
4) predicted gas levels.

Front 27

who were Penzias and Wilson

Back 27

labworkers at Bell telephone

Front 28

what did Penzias and Wilson discover

Back 28

cosmic microwave background radiation.

Front 29

what is cosmic microwave background radiation.

Back 29

radiation left over from development of the universe

Front 30

proof of expanding universe

Back 30

wavelength of light rays: red-light waves shift-farther apart, blue ligth waves coming closer.

Front 31

what helped pinpoint center of Universe

Back 31

examining all those red and blue light ray shifts

Front 32

deuterium

Back 32

heavy hydrogen

Front 33

problem with big bang theory

Back 33

universe (stars/planets/galaxies) occured from asoultely nothing

Front 34

Steady State Hypothesis creators

Back 34

Hoyle, Bondi, Gold

Front 35

what is steady state hypothesis

Back 35

old and always existed....although the universe is expanding, it nevertheless does not change its appearance over time (the perfect cosmological principle); it has no beginning and no end.

Front 36

problem with steady state hypothesis

Back 36

Density must be constant in a steady state Universe and our Universe is expanding.