Type
Crossword
Description

What process causes hydrogen nuceli to fuse to form helium nuclei. fusion
Once the majority of hydrogen is used up the star is no longer able to maintain it's " blank ". equilibrium
What forces attract particles together at the start of a stars lifecycle. gravitational
After the main sequence stage the star starts to expand, so is now known as a " blank " . redgiant
All stars are formed from large cold clouds of gas and dust called " blank " . nebulae
What stage do stars remain at for approximately 90% of their lifetimes. main sequence
The core from a red giant will form a burnt out, super hot core called a " blank " . white dwarf
After the main sequence stage, a star with a much heavier mass than our sun will become a " blank " . red supergiant
There are no " blank " stars. green
what is the name given to a hypothetical physical body that is able to absorb all incident electromagnetic radiation blackbody
What is the name of a low-mass star located approximately 4 light-years away from the Sun. proxima centauri
What is the name of the galaxy our solar system resides in. milkyway
What diagram is a plot of luminosity against temperature. Hertzsprung-Russell
Apparent " blank " is the perceived brightness of a celestial object from Earth. magnitude
What is the name of objects that experience a rapid and enormous increase in absolute magnitude. Supernovae
What is one of the possible outcomes for the end of a stars life which has a mass much larger than our suns. neutron star
what is the name of the last stage of a stars life that has a mass similar to our suns. black dwarf
Elements heavier than " blank " are formed in a supernova iron
The big bang produced hydrogen and " blank " . helium
The lifecycle of a star depends on its " blank ", and how it compares to that of our sun. mass

Life Cycle of Stars Crossword

Type
Crossword
Description

The brightness of a star's light is called magnitude
The stars heats up and hydrogen is converted to helium nuclear fusion
Huge cold clouds of gas and dust nebula
The earliest stage of a star's life in which the contracting cloud heats up and becomes a protostar
Stars spend most of their lives here as long as hydrogen fuses into helium main sequence
Once medium-sized stars run out of nuclear fuel, the star becomes a red giant
Have no fuel, but glow from leftover energy white dwarf
When a massive star runs out of hydrogen, it becomes a red supergiant
The explosion of a large star that causes heavier elements to form supernova
These stars form from small supergiants neutron star
A place in space where gravity is so great that light can't escape black hole
The most massive stars form ____ iron
A white dwarf that has cooled black dwarf
Forms from the outer layers of hydrogen and helium that are cast off when a red giant becomes a white dwarf planetary nebula
How long a star lives depends on its mass
_____________ are rich in hydrogen young stars
_________ use up their fuel more quickly large mass stars
Stars that have less mass then the sun can live up to ____ billion years two hundred
A medium-mass star will live for about ___ billion years ten
A star that is more massive than the sun may live only about ten _____ years million

Life cycle of a star Crossword

Type
Crossword
Description

an interstellar cloud of dust, hydrogen, helium and other ionized gases. Stellar nebula
a star with an initial mass of 0.5 to 8 times that of Earth's sun. It spends most of its time on the main sequence as an orange, yellow, or blue white dwarf star. Average star
When a nebula collects enough mass, it begins to collapse under its own gravity. The internal pressure created by this collapse is enough to trigger fusion of hydrogen deep in its core. Massive star
a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses (M☉)) in a late phase of stellar evolution Red giant
an aging giant star that has consumed its core's supply of hydrogen fuel. Helium has accumulated in the core, and hydrogen is now undergoing nuclear fusion in the outer shells. These shells then expand, and the now cooler star takes on a red color. They are the largest known stars. Red supergiant
an astronomical event that occurs during the last stellar evolutionary stages of a massive star' s life, whose dramatic and catastrophic destruction is marked by one final titanic explosion. Supernova
a ring-shaped nebula formed by an expanding shell of gas around an aging star. Planetary nebula
is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. White dwarf
a region of space having a gravitational field so intense that no matter or radiation can escape. Black hole
are created when giant stars die in supernovas and their cores collapse, with the protons and electrons essentially melting into each other to form neutrons. Neutron star
a contracting mass of gas that represents an early stage in the formation of a star, before nucleosynthesis has begun. Protostar
a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter. Nebula

Life cycle of Stars/HR Diagram Crossword

Type
Crossword
Description

Variable that is plotted on the x-axis of a HR diagram. Temperature
The birthplace of a star. Nebula
The second stage in the life of a star. Main Sequence
The third stage of a star's life, after it runs out of fuel. Red Giant
A star after its Red Giant stage that isn't big enough to supernova White Dwarf
An extremely dense star that is formed after a supernova Neutron Star
Brightness of a star from Earth. Apparent Brightness
The measure of a stars brightness. Magnitude
A star is born when this occurs. Nuclear Fusion
Cloud of gas and dust, earliest stage of a stars life Protostar
Very large, cool and bright stars. Red Supergiant
The explosive death of a star. Supernovae
A contracting cloud of gas and dust with enough mass to form a star. Protostar
Exerts such a gravitational pull that no light can escape. Black Hole
Blue main sequence Hottest star
Red Giant Coolest star
On the HR diagram, the y-axis indicates Luminosity
The location of the hottest stars on the HR diagram Left
The location of the coolest stars on the HR diagram. Right
Stars brightness as if all were viewed from the same distance. Absolute Magnitude

Life Cycle of Stars and HR diagram Crossword

Type
Crossword
Description

Made of dust and gas Nebula
Stage before a black dwarf White dwarf
Our sun is currently in this stage Main Sequence
This measures how bright a star is Luminosity
H.R. stands for Hertzsprung-Russell
This star has an explosion as bright as the universe Supernova
Neutron star is also known as a Pulsar Star
The hottest stars are this color Blue
Located at the top right corner of an HR diagram Red super giant
The 4th stage of a stars life Planetary nebula
The closest star to us (not the sun) Proxima Centauri
How bright a star actually is Absolute magnitude
This determines how a star will live and die Mass
What gives stars their energy Nuclear reactions
When a Supernova collapses it becomes a Black hole
Stars are made of Hydrogen and Helium
This star is a pulsar star Crab pulsar
What compares a stars brightness and temperature HR diagram
Smaller stars burn fuel slower and Live longer
Main Stream Stars will stay that way for approx. 10 billion years

Life Cycle of a Star Crossword

Type
Crossword
Description

A ________ is a large cloud of gas and dust nebula
A_______ is what a medium star will turn into when their fuel runs out red giant
A_______ is the core of a star that has cooled white dwarf
A_______ is the remains of a white dwarf black dwarf
A________ can occur when a star is dying black hole
A_______ is a red giant that has exploded supernova
What is a contracting cloud of gas and dust protostar
A_______ is any star that is fusing hydrogen in its core Main sequence star
A_______ is what a massive star will turn into when its fuel runs out super giant
A_______ is created when massive stars die nuetron star

life cycle of a star Word Search

Type
Word Search
Description

Red supergiant
Massive star
Supernova
Black hole
Black dwarf
Planetary nebula
White dwarf
Red giant
Main sequence star
Stellar nebula
Protostar
Sun

Sun & Stars Crossword

Type
Crossword
Description

equal to six trillion miles light year
apparent change in position of an object parallax
the process in which hydrogen atoms join to form helium nuclear fusion
its life span depends on its mass star
spinning neutron star pulsar
a system of two stars in which one star revolves around the other binary star
first stage of a star's life protostar
located on sun's surface and can be larger than Earth sunspot
a massive and extremely remote celestial object quasar
the force that attracts a body toward the center of the earth is known as _______. gravity
the tendency of an object to resist a change in motion inertia
The eruption that occurs when magnetic energy heats gases on the sun to millions of degrees Celsius solar flare
a device that breaks light into colors and produces an image of the resulting spectrum spectrograph
also known as a star's luminosity absolute brightness
a graph used to find out if the temperature and the absolute brightness of stars are related HR diagram
a large cloud of gas and dust spread out in an immensive volume nebula
The blue-white core of a star that is left behind cools and becomes a _______. white dwarf
after a ______, some of the material from the star expands into space. supernova
an object with strong gravity that nothing can escape black hole
the remain of a high-mass star neutron star
the process of building something up gradually by the gathering together of smaller pieces is called _______. accretion
the amount of matter in an object mass
the relative mass of an object weight

Stellar Life Crossword

Type
Crossword
Description

the law that states that mass in must equal mass out conservation of mass
law that states that energy in must equal energy out conservation of energy
lower edge of the main sequence zero age
gas that is so dense that electrons cannot change energy levels degenerate matter
helium fusion beginning with an explosion helium flash
the combination of three helium nuclei triple alpha process
any star that changes brightness in a periodic way variable star
internal characteristics that change size, temperature and luminosity intrinsic variables
collection of less than 1000 stars that is transparent open cluster
a multitude of stars that form a spherical shape globular cluster
the limit where stars move off the main sequence turn off point
star that does not ignite helium fusion brown dwarf
eruptions in the helium fusion shell thermal pulses
smaller cooler stars that could live over 10 times longer than our sun red dwarfs
ionized gases expelled by a dying star planetary nebula
a white dwarf is not a star.. it is this compact object
whirling disk of gas accretion disk
explosion of super giant supernova

Life Cycle of a Star Crossword Puzzle

Type
Crossword
Description

A nebula slowly starts to what under the force of gravity. collapse
In the main sequence stage to form helium atoms in their core they have to fuse what kind of atoms? hydrogen
A protostar is a very hot cloud of densley packed what? gas
A shell of what kind of reactions are caused after the main sequence stage when the hydrogen fuel becomes exhausted? nuclear
A supergiant star's starts to collapse and heat up, after a helium burning red giant runs out of helium fuel in its core. This phase causes the outer layer to expand and do what. cool
In the white dwarf stage after all the outer layers drift away only what remains? core
A supernova is the what of a high-mass star. explosion
Which stage is when the compact core remains from the supernova event. neutron star
What type of star emits no heat or light? black dwarf
After the supernova event everything that remains is crushed down, forming an incredibly small, dense object known as what. black hole

Star Crossword Puzzle

Type
Crossword
Description

The beginning of a stars life cycle is called a __________ Nebula
90% of the stars in the universe are ___________ Main Sequence Stars
A _______ has no hydrogen in its core Red Giant
A ________ is brighter and cooler than a red giant. Supergiant
Nothing can escape a ________ black hole
A ______ is the star stage after the nebula protostar
A ______ is formed by an expanding shell of gas around an aging star planetary nebula
A _______ is when a low-mass star exhausted all of its fuel white dwarf
_______ are made when white dwarfs are cooled off black dwarf
A _______ is an explosion of a massive star supernova
A _______ is when massive stars die and their cores collapse neutron star