Big Bang

Question 1

Big bang theory

Answer 1

most plausible theory of the origin of universe

Question 2

13.8 billion years ago

Answer 2

Singularity

Question 3

Singularity

Answer 3

entire universe was compressed into a very small ball with infinite density and heat

Question 4

Inflation

Answer 4

singularity expanded so fast it appeared as an explosion

Question 5

separation of strong nuclear force

Answer 5

Inflation

Question 6

what resulted from singularity

Answer 6

space, matter, time, energy

Question 7

Formation of Matter and Antimatter

Answer 7

Equal amounts of quarks and antiquarks or
matters and antimatters formed.

Question 8

Does antimatter still exist?

Answer 8

no, but can be made synthetically

Question 9

Why is there no more antimatter?

Answer 9

matter and antimatter cancelled each other. (they had a ratio of 1 billion 1 matter: 1 billion antimatter)

Question 10

Big Bang Nucleosynthesis

Answer 10

cooling of the universe resulted in quarks cooling down and allowing them to bind together, forming protons and neutrons

Question 11

Elements formed from big bang nucleosynthesis

Answer 11

hydrogen, helium, and trace amounts of lithium

Question 12

Heat death

Answer 12

no heat = no energy; everything will disappear eventually

Question 13

Particle annihilation

Answer 13

matter + antimatter = energy

Question 14

Baryogenesis

Answer 14

Quarks and antiquarks or matters and antimatters annihilate each other
upon contact. quarks survive, which will ultimately combine to form matter.

Question 15

Law of charges

Answer 15

same charges repel, different charges attract

Question 16

Recombination

Answer 16

The universe’s temperature and density continue to fall, and ionized hydrogen and helium atoms capture electrons. Universe becomes transparent to light due to electrons being bound to atoms.

Question 17

Composition of the universe after recombination

Answer 17

75% hydrogen, 25% helium, trace amounts of lithium

Question 18

Dark Ages

Answer 18

No formation of stars or collision of something
or anything. the universe became dormant and dark

Question 19

Formation of Stars and Galaxies

Answer 19

hydrogen gas gets clumped together and put under pressure by gravity. stars formed.

Question 20

Fundamental forces

Answer 20

Gravitational, weak nuclear, electromagnetic, strong nuclear

Question 21

Gravitational

Answer 21

acts on all objects with mass

Question 22

Weak nuclear

Answer 22

nuclear decay

Question 23

Electromagnetic

Answer 23

interaction between charged particles

Question 24

Strong nuclear

Answer 24

binds nucleon (protons & neutrons) in the nucleus

Question 25

Weakest force

Answer 25

gravitational

Question 26

Strongest force

Answer 26

strong nuclear

Question 27

Big bang nucleosynthesis

Answer 27

hydrogen, helium, and trace amounts of lithium

Question 28

Formation of light elements

Answer 28

Big bang nucleosynthesis

Question 29

Stellar nucleosynthesis

Answer 29

Lithium to Iron (3 - 26)

Question 30

Formation of heavy elements

Answer 30

Stellar nucleosynthesis

Question 31

Supernova nucleosynthesis

Answer 31

Cobalt to Uranium (27 - 92)

Question 32

Nuclear Fusion

Answer 32

nucleus + nucleus = larger nuclei (H - Fe)

Question 33

Nuclear Fission

Answer 33

nucleus splits into small nuclei (Co - U); used in nuclear powerplants

Question 34

Proton-proton chain

Answer 34

average star: H --> He

Question 35

CNO cycle

Answer 35

massive star: H --> He

Question 36

Tri-alpha

Answer 36

once a star uses up the hydrogen in its core, the pp chain and CNO cycle stops

Question 37

Alpha Ladder

Answer 37

A star accumulates more mass and grows into a red supergiant. H --> Fe (and everything in between)

Question 38

Supernova

Answer 38

last phase of a dying star's life; when a star cannot have nuclear fusion

Question 39

products of supernova

Answer 39

cobalt to uranium

Question 40

Neutron Capture

Answer 40

Neuron particle is added to the seed nucleus of iron.

Question 41

S-process

Answer 41

A slow rate of capturing neutrons while there is a faster rate of radioactive decay

Question 42

R-process

Answer 42

A faster rate of capturing neutrons before they undergo radioactive decay. Thus, more neutrons can be combined in the nucleus.