Earth and Space Science - Big Bang Theory

singularity

A point of infinite density

microwave

Cosmic Background Radiation is given off in this part of the electromagnetic spectrum

cosmic background radiation

Leftover radiation from the Big Bang

nucleosynthesis

Physical process that created all the heavier elements

expanding

Space itself is undergoing this type of motion

13.7 billion years

The Big Bang happened how many years ago?

density

The amount of mass per volume of a material

Doppler Effect

The change in pitch of sound as it is coming or going

gravity

The force of attraction between matter

Edwin Hubble

The name of the astronomer who found the red shift of light from galaxies

Georges Lemaitre

The name of the astronomer who proposed the Big Bang Theory

Hubble Ultra Deep Field

The telescope survey of one pinpoint of sky, finding 10,000 distant galaxies

hydrogen and helium

The two elements created during the early minutes after the Big Bang in a 3:1 ratio

protons and neutrons

Two subatomic particles created in the first second after the Big Bang

hydrogen

element with 1 proton

helium

element with 2 protons

banding of nearby stars

first piece of evidence that we are in a spiral galaxy

distance

gravity decreases with...

mass

gravity increases with...

blue shift

results as waves are compressed when the object is coming towards you

red shift

results as waves are stretched when the object is moving away from you

red shift of galactic light

the first piece of evidence for the Big Bang Theory

cosmic background radiation

the second piece of evidence for the Big Bang Theory

universal prevalence of H and He

the third piece of evidence for the Big Bang Theory