DAY

Question 1

a cosmological model that explains how the universe began.

Answer 1

big bang theory

Question 2

It suggests that the universe started its expansion about _____billion years ago based on the latest calculations.

Answer 2

13.8

Question 2

T OR F: The concept of big bang is not a literal explosion of something that led to the creation of the universe.

Answer 2

T

Question 2

tf: The bread represents the universe, while raisins are the galaxies.

Answer 2

tru

Question 2

tf: The galaxies, represented by the dots, are not expanding.

Answer 2

TRUE

Question 3

The universe started as a “__________,” an area predicted to be in the core of a black hole with very high temperature and density

Answer 3

singularity

Question 4

The intense heat resulted in the formation of matter and antimatter particles that were destroyed every time they collided with each other.

Answer 4

singularity

Question 4

____________ is the formation of elements, such as H and He.

Answer 4

Nucleosynthesis

Question 5

The presence of stars led to the _________________, such as planets, comets, and asteroids

Answer 5

formation of other cosmic bodies

Question 5

Presence of these elements led to the formation of ______and________

Answer 5

stars and galaxies.

Question 6

The ______________________________________, which is the residue or heat leftover from the big bang

Answer 6

detection of the cosmic microwave background (CMB) radiation

Question 6

The ____________________is supported by the observation that galaxies are receding from us.

Answer 6

expansion of the universe

Question 6

The ,____________________________ such as H, He, and Li. These elements were formed through the fusion of protons and neutrons immediately after the big bang.

Answer 6

high amount of light elements

Question 7

born and dies in Georges Henri Joseph Edouard Lemaître?

Answer 7

1894 - 1996

Question 8

He suggested the idea of the expanding universe.

Answer 8

Georges Henri Joseph Edouard Lemaître

Question 8

______________which provided an evidence that the universe was not static but expanding.

Answer 8

Hubble’s law,

Question 9

______________ established the Hubble’s law, which provided an evidence that the universe was not static but expanding.

Answer 9

Edwin Powell Hubble 1889 - 1953

Question 10

Drawbacks of the Big Bang Theory

It fails to explain____________________-

Answer 10

how the universe was created.
how the galaxies formed.

Question 10

____________and _________ discovered that microwaves with wavelengths of about 7 cm were present in space.

Answer 10

Arno Penzias 1933 and Robert Wilson 1941

Question 11

These waves were referred to as the ____________________________radiation

Answer 11

cosmic microwave background (CMB)

Question 12

_____________________is another view that proposes that the universe has always been expanding.

Answer 12

The steady-state theory

Question 13

As the universe expands, _________ and ___________ at the same rate that old ones become unobservable due to distance and recession velocity

Answer 13

new stars and galaxies are formed

Question 14

PROPONENTS OF THE STEADY-STATE THEORY

_________, ________ and _____________ proposed the steady state theory in 1948.

Answer 14

Hermann Bondi, Thomas Gold, and Fred Hoyle

Question 15

DRAWBACKS OF THE STEADY-STATE THEORY

It is not .__________________________________________

Answer 15

parallel with the law of conservation of energy and mass

Question 16

The discovery of ____________________________significantly supported the explanations given by the big bang theory and led many scientists to reject the steady-state theory in 1965.

Answer 16

cosmic microwave background (CMB) radiation

Question 17

__________________, also known as ______________________proposes that the universe is expanding and will contract once all the energy after the big bang has been used up.

Answer 17

Oscillating universe theory pulsating theory,

Question 17

DRAWBACKS OF THE STEADY-STATE THEORY

Answer 17

* Recent findings rejects the idea that cosmic radiation was a result of a supernova. * It has been proven that radiation is equal in any direction of the universe and could not have resulted from supernovae..

Question 18

The oscillating universe is a combination of_____________________

Answer 18

big crunch and big bang.

Question 19

____________, a Caltech professor, proposed it.

Answer 19

Richard Tolman

Question 20

Tolman called the birth of another universe as the big bounce.______________

Answer 20

big bounce.

Question 21

According to the nebular theory, the solar system originated from a ___________

Answer 21

nebula.

Question 21

DRAWBACKS OF THE OSCILLATING UNIVERSE THEORY *

Answer 21

The suggestion that the universe would collapse on its own after it reaches its full expansion violates some current laws of physics, such as the postulated existence of dark energy. The currently postulated end of the universe is by big freeze or heat death.

Question 22

It is the __________________about the formation of the solar system some 4.5 billion years ago.

Answer 22

widely accepted view

Question 23

A ___________ is defined by NASA as giant cloud of gas and dust in space.

Answer 23

nebula

Question 23

PROPONENTS OF THE NEBULAR THEORY

Answer 23

Emmanuel Swedenborg (1688-1772) Immanuel Kant (1724-1804) Pierre-Simon Laplace (1749-1827)

Question 24

_____________________ because if the nebular theory is correct then the sun should be spinning at a higher rate than the others.

Answer 24

It does not follow the law of angular momentum

Question 24

DRAWBACKS OF THE NEBULAR THEORY ____________________________________, which is contrary to the assumption that dust particles will be attached to each other forming a planet

Answer 24

Particles surrounding Saturn repel each other

Question 25

What are the planets rotates in a counterclockwise direction

Answer 25

It did not consider Uranus and Venus which rotates in a clockwise direction

Question 26

The encounter theory proposes that the planets were formed from the material ejected from the sun during an ______________________ object, such as another star.

Answer 26

encounter with another celestial

Question 27

Two forms of encounter theory

Answer 27

planetesimal and tidal theories

Question 27

It proposes that a passing star termed as ____________nearly collided with the ________

Answer 27

intruding star protosun.

Question 28

The massive gravitational pull of the______________________________ of material which then condensed into planetesimals.

Answer 28

intruding star causes the protosun to eject filaments

Question 29

This theory describes how Earth started from a solid mass smaller than its present size

Answer 29

Planetesimals theory

Question 29

_____________ proposed that accretion of minute solid particles created planets and their moons rather than by gaseous or liquid material condensation

Answer 29

Thomas Chrowder Chamberlin

Question 30

______________provided the mathematical calculations to Chamberlin’s idea.

Answer 30

Forest Ray Moulton

Question 31

It explains that the solar system formed as a result of a near collision between a passing star and the sun.

Answer 31

Tidal theory

Question 32

This theory proposes that the hot gas from the passing star condensed into planets instead of condensing into planetesimals

Question 33

The tidal theory was proposed by: ___________ and ___________ in 1918

Answer 33

James Jeans physicist and Harold Jeffreys mathematician