Age & Early Universe
The universe is _______________ years old.
What is 14 billion years old?
The relationship between galaxy distance and velocity (speed) is that...
What is the further the galaxy is, the further it moves away?
The two most abundant elements in the universe are:
What is hydrogen and helium?
This is said to be leftover material that is evidence of the Big Bang occurring.
What is cosmic microwave background radiation?
The Doppler effect is typically used to describe how _______ is like depending on where a person is standing next to the source that is making a ______.
What is sound?
The single point in which the entire universe was contained is called the...
What is the singularity?
This is the law used to describe the relationship between a galaxy's distance and its velocity (speed)...
These are the percentages that hydrogen and helium make up...
What is ~74% hydrogen and ~24% helium?
What is highly redshifted?
These tools were used to study light spectra and elemental composition in space...
What are telescopes and electromagnetic waves?
Scientists say the Big Bang was NOT an explosion because it was actually a rapid...
What is expansion?
What is expanding?
The reason hydrogen and helium are so abundant in the universe is because...
What is Big Bang nucleosynthesis or nuclear fusion?
Big Bang suggests that CMBR is now __________ in terms of temperature.
What is very cold?
This type of shift in the electromagnetic spectrum represents the way in which the universe is said to be expanding...
What is redshift?
At the beginning, the universe started out as... (size, temperature, density)
What is very small, very hot, and very dense?
Galaxies in the universe are for the most part....
What is moving away?
Based on the elemental composition, the early universe can be described as...
What is very hot and dense?
The CMBR in the universe suggests that it's temperature used to be ______________.
What is very hot?
These types of shifts in light spectra help us study galaxy motion and universe's expansion...
What is redshift and blueshift?
This process occurred immediately after Big Bang and is also involved in star formation...
What is nuclear fusion?
This data is used to determine the relationship between galaxy distance and velocity (speed)...
What is the emission and absorption spectrum from stars within galaxies?
This is evidence of the Big Bang...
What is elemental composition and nucleosynthesis (nuclear fusion)?
The CMBR energy is described as being very cold and was released about ______________ years ago.
What is 13.8 billion years ago?
These 3 pieces of evidence prove the Big Bang Theory.
What is Hubble's Law, redshift, and cosmic microwave background radiation?