basic concepts Flashcards
giga
G 10^9 1000000000
mega
M 10^6 1000000
kilo
K 10^3 1000
hecto
H 102 100
deka
Da 10^1 10
deci
d 10^-1 0.1
centi
D 10^-2 0.01
milli
m 10^-3 0.001
micro
m 10^-6 0.000001
nano
n 10^-9 0.000000001
What are the four fundamental forces that emerged after the Big Bang?
Gravity, Electromagnetism, Strong Nuclear Force, and Weak Nuclear Force.
What are elementary particles?
The most basic building blocks of matter, such as quarks, electrons, and neutrinos.
What is nucleosynthesis?
What is nucleosynthesis?
A: The process of creating new atomic nuclei from pre-existing nucleons (protons and neutrons).
What happens during matter/anti-matter annihilation?
What happens during matter/anti-matter annihilation?
A: Particles of matter and anti-matter collide and annihilate each other, releasing energy.
What is inflation in the context of the early universe?
A: A rapid expansion of the universe by a factor of 10^26 within 10^−32 seconds.
Q: By how much did the universe increase in size during inflation?
A: By a factor of 100,000,000,000,000,000,000,000,000 times (one hundred septillion times).
Q: How quickly did inflation occur?
A: In 0.000,000,000,000,000,000,000,000,000,000,01 seconds (ten decillionth seconds).
Q: What is the Matter Era?
A: The period approximately 50,000 years after the Big Bang when matter dominated the universe.
What significant event happened 370,000 years after the Big Bang?
What significant event happened 370,000 years after the Big Bang?
A: Recombination of electrons and nuclei to form atoms.
