Quiz 2

Question 1

are the most widely recognized astronomical objects, and represent the most fundamental building blocks of galaxies. The age, distribution, and composition of the this in a galaxy trace the history, dynamics, and evolution of that galaxy. Moreover, those are responsible for the manufacture and distribution of heavy elements such as carbon, nitrogen, and oxygen, and their characteristics are intimately tied to the characteristics of the planetary systems that may coalesce about them. Consequently, the study of the birth, life, and death of stars is central to the field of astronomy.

Answer 1

Stars

Question 2

are luminous globe of gases that produces its own heat and light by nuclear reactions (fusion). They are essentially giant balls of exploding gas, which mainly consists of hydrogen and helium.

Answer 2

Stars

Question 3

Nebula is a cloud of gas (hydrogen) and dust in space. A Star will form from the Nebula, as it is the birthplace of a Star.

Answer 3

STELLAR NEBULA

Question 4

It is the hot core at the heart of a collapsing cloud formed from nebula due to the gravity that pulled Hydrogen gas together until it spins faster and faster and becomes ignited

Answer 4

PROTOSTAR

Question 5

starts to form when nuclear fusion occurs at the core of the star, it begins to contract, glow and become stable. Hydrogen is converted into Helium.

Answer 5

MAIN SEQUENCE STARS

Question 6

Massive star example

Answer 6

Rigel

Question 7

Average star example

Answer 7

Sun

Question 8

• Red Giant

• Planetary Nebulae

• White Dwarf

Answer 8

AVERAGE STAR

Question 9

• Red Super Giant
• Super Nova
*Black hole
*Neutron Star

Answer 9

MASSIVE STAR

Question 10

• Red Super Giant
• Super Nova
*Black hole
*Neutron Star

Answer 10

MASSIVE STAR

Question 11

is a luminous giant star of low or intermediate mass in a late phase of stellar evolution.. The appearance of the red giant is from yellow- orange to red in colour.

Answer 11

RED GIANT

Question 12

represent the final. brief stage in the life of a medium- sized star like our Sun. While consumirig the last of the fuel in its core, the dying star expels a large portion of its outer envelope. This material is then illuminated by the ultraviolet radiation from the stellar remnant, producing glowing clouds of gas that can show complex structure.

Answer 12

Planetary nebulae

Question 13

Red giant star becomes exhausted of nuclear fuel, the outer material is blown off into space leaving the inert Carbon. The remnant is known as

Answer 13

WHITE DWARF

Question 14

A more massive main sequence star evolves, cools and expands faster than low mass star and will turn into ______ star, the largest known star. Carbon fusion still occurs and Oxygen formed.

They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous. Betelgeuse and Antares are the brightest and best known _____

Answer 14

RED SUPER GIANT

Question 15

Is the leftover, or remnant of a massive star in our Milky Way that died 6,500 light-years away. Astronomers and careful observers saw the supernova in the year 1054 amage crede NASA, ESA, J Hester and A. La (Anna State University)

Answer 15

Crab Nebula

Question 16

Explosion of star or _____ releases large amount of energy. Because of that, elements are dispersed into the space.

is a powerful and luminous stellar explosion. This transient astronomical event occurs during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion. The original object, called the progenitor, either collapses to a neutron star or black hole, or is completely destroyed.

Answer 16

SUPERNOVA

Question 17

are formed when a massive star runs out of fuel and collapses. The very central region of the star the core collapses, crushing together every proton and electron into a neutron. If the core of the collapsing star is between about 1 and 3 solar masses, these newly-created neutrons can stop the collapse, leaving behind a neutron star. (Stars with higher masses will continue to collapse into stellar-mass black holes.)

Answer 17

Neutron stars

Question 18

is a region in space where gravity is too strong that no matter can escape from it.

are among the most violent and energetic objects in the universe active galactic nuclei and quasars, which shoot off jets even as they suck in surrounding gas.

Answer 18

BLACK HOLE

Question 19

All atoms in the universe began as

Answer 19

Hydrogen

Question 20

Stars go through a natural cycle, much like any living beings. This cycle begins with birth, expands through a lifespan characterized by change and growth and ultimately leads to death

Answer 20

Life cycle of a star

Question 21

A star originates from a large cloud of gas.

Answer 21

Giant gas cloud

Question 22

Is a cloud of gas (hydrogen) and dust in space. A star will form from it as it is the birthplace of a star

Answer 22

Nebula

Question 23

Begins when materials stop falling into the protostar and release tremendous amount of energy

Answer 23

T-tauri phase