Type
Word Search
Description

Constellation
Chemical Reaction
Nuclear reaction
Neutrons
Density
Combustion
Isotope
chain Reaction
Star
Nebula
Fusion
Fission

Nuclear Energy and Radioactive Materials Crossword

Type
Crossword
Description

What is a nuclear reaction that causes a nucleus to split into two or more pieces and releases neutrons and energy? fission
What is a continuous series of nuclear fission reactions? chainreaction
What is a nuclear reaction in which two light nuclei fuse together under extreme temperatures to form heavy nuclei and releases energy? fusion
Alpha decay, Beta decay, and gamma decay are all types of what? radioactive decay
What results in a new element with 2 less than the original atomic number and 4 less than the original mass number? Alpha decay
What are fast moving negative electrons that have the same mass as an electron? Beta particle
Alpha particles, Beta particles, and Gamma rays all produce what? radiation
Both nuclear fusion and nuclear fission produce what? nuclear energy
The time it takes for one half of a sample of radioactive material to decay is called what? halflife
The electricity produced from a nuclear reaction is called what? Nuclear power
What is positively charged, is made up of 2 protons and 2 neutrons, and the more massive type of nuclear radiation? Alpha particle
What results in the atomic number increasing by 1 and the mass staying the same from its original value? Beta decay
What is a type of radioactive decay that does not change the mass number or the atomic number of an atom? gamma decay
The changing of one element into another by radioactive decay is called? Transmutations
Too many protons and neutrons can cause a nucleus to become what? unstable
Fusion is the power scource for what? stars
The 2 factors that depend on risk of damage from radiation are the type of radiation and the amount of what? exposure
The human body has evolved to withstand what type of radiation? background
Nuclear energy is a _____, long term solution for producing power. dependable
What is it called when you have a different number of neutrons than the base atom? isotope
A graph of the number of radioactive parent nuclei remaining in a sample as a function time is called what? decay curve
Where in Ukraine did a devastating nuclear disaster happen that caused the whole area to have high levels of radiation? Chernobyl
What is it called when the number of electrons are different from the number of protons? ion
Using knowledge of half-life to date very old specimen is called what? radiometric dating
What is a form of electromagnetic energy? (symbol:Y) gamma ray
The energy produced from a nuclear power plant can be used to make what? electricity
A ___ nuclear ____ causes protons and neutrons to attract to one another strong force
A factor of ____ _____ is the proton/neurton ratio nuclear stability
Who made the famous, mass-energy equation?(E=mc^2) Einstein
____ is one of the risks from being exposed to high levels of radiation cancer

Nuclear Chemistry Vocabulary Crossword

Type
Crossword
Description

The ability of radiation to pass through matter Penetrating Power
Isotopes of atoms with unstable nuclei Radioisotope
A form of high energy electromagnetic radiation emitted from some materials that are in an excited electron state X-Ray
High energy radiation that accounts for most of the energy lost during radioactive decay Gamma Ray
Radiation that is made up of alpha particles and is deflected toward a negatively charged plate when radiation from a radioactive source is directed between two electrically plates Alpha radiation
Radiation that is made up of beta particles and is deflected toward a positively charged plate when radiation from the radioactive source is directed between two electrically charged plates Beta radiation
A radioactive decay process that occurs when an atom's nucleus draws in a surrounding electron, which combines with a proton to form a neutron, resulting in an x-ray photon being emitted Electron capture
The time required for one-half of a radioisotope's nuclei to decay into its products Half-life
Protons and neutrons Nucleon
A particle that has the same mass as an electron but an opposite charge Positron
A radioactive decay process in which a proton in the nucleus is converted into a neutron and a positron, and then the positron is emitted from the nucleus Positron emission
A series of nuclear reactions that starts with an unstable nucleus and results in the formation of a stable nucleus Radioactive Decay Series
The process that is used to determine the age of an object by measuring the amount of a certain radioisotope remaining in that object Radiochemical dating
A force that acts on subatomic particles that are extremely close together and overcomes electrostatic repulsion among protons Strong Nuclear force
A reaction in which an atom's atomic number is altered Transmutation
A nuclear reactor that is able to produce more fuel than it uses Breeder reactor
The minimum mass of a sample of fissionable material necessary to sustain a nuclear chain reaction Critical mass
The difference in mass between a nucleus and its component nucleons Mass defect
The splitting of a nucleus into smaller, more stable fragments, accompanied by a large release of energy Nuclear Fission
The process of binding smaller atomic nuclei into a single, larger, and more stable nucleus Nuclear fusion
A nuclear fusion reaction Thermonuclear reaction
The process in which nuclei are bombarded with high-velocity charged particles in order to create new elements Induced Transmutation
An element with an atomic number of 93 or greater on the periodic table Transuranium element
Radiation that is energetic enough to ionize matter it collides with Ionizing Radiation
An isotope that emits non-ionizing radiation and is used to signal the presence of an element or specific substance Radiotracer

Energy Word Search

Type
Word Search
Description

waves
vibration
fossil fuels
uranium
natural gas
coal
oil
nonrenewable resource
renewable resource
biomass
geothermal
solar
wind
hydroelectric
sound
sun
fusion
fission
nuclear
electromagnetic
electrical
chemical
thermal
mechanical
elastic
gravitational
potential
kinetic
joule
energy

Nuclear Physics Crossword

Type
Crossword
Description

Force that holds the nucleus of an atom together StrongForce
Force that acts on large bodies such as planets and stars Gravity
Two Nuclei combine to produce a nuclei with more mass Fusion
The most penetrating radiation, created the fictional "Hulk" GammaRadiation
Very small particle that carries strong force Gluon
Nuclear force that leads to beta decay WeakForce
A radio-isotope that emits non-ionizing radiation and is used to signal the presence of an element or specific substance Radiotracer
Can block alpha particles paper
Splitting of an atom of one element into an element of another atom Fission
The amount of energy needed to bind an element together BindingEnergy
The force that causes attraction between protons and electrons and repulsion between charges of the same kind ElectromagneticForce
Uses a phosphor detector to detect radiation and emits a bright light GeigerCounter
Particles emitted from a radioactive source, there are several types of these Radiation
Can block gamma radiation Lead
Particle with the mass of an electron but has a positive charge Positron
Mass needed to make a fission or fusion reaction work CriticalMass
Helium nuclei that have been emitted from a radioactive source AlphaParticle
Can block beta particles Plastic
Name of a city in which an atomic bomb was dropped on in WWII Hiroshima
Last name of the man who created the equation E=mc^2 Einstein
The amount of time for half of a substance to undergo radioactive decay HalfLife
Bomb made using the fusion of hydrogen into helium HydrogenBomb
Bomb made using the fission of uranium atoms AtomicBomb
Happens when a nuclear power plant explodes Meltdown
Radioactive isotopes can be used for medical ______________. Imaging

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

Stars and Galaxies Word Search

Type
Word Search
Description

Big Bang theory
black hole
constellation
corona
galaxy
giant
light year
nebula
neutron star
photosphere
stars
sunspots
super giant
white dwarf

Stars Crossword

Type
Crossword
Description

Violent eruptions of particles and radiation from the surface of the sun. Solar Flares
Bright grouping of stars named after animals, mythological characters, or everyday odjects. Constellations
two stars that are gravitationally bound together and orbit a common center of mass. Binary Star
How bright a star appears to be. Apparent Magnitude
The energy output from the surface of a star per second. Luminosity
Dark spots on the surface of the photosphere. Sunspots
Above the photosphere. Chromosphere
The lowest layer of the Sun's atmosphere. Photosphere
Visible light arranged according to wavelengths. Spectrum
The brightness an object would have if it were placed at a distance of 10pc. Absolute Magnitude
Hot, condensed object at the center of a nebula that will become a new star when nuclear fusion reactions begins. Protostar
Large cloud of interstellar gas and and dust that collapses on itself. Nebula
Collapsed, dense core of a star that forms quickly while its outer layers are falling inward. Neutron Star
Massive explosion that occurs when the outer layers of a star are blown off. Supernova
Small, extremely dense remnant of a star whose gravity is so immense that not even light can escape its gravity field. Black Hole
Graph that relates stellar characteristics: class, mass, temperature, magnitude, diameter, and luminosity. H-R diagram
Apparent positional shift of an object caused by the motion of the observer. Parallax

Chapter 18 Word Search

Type
Word Search
Description

half-life
nuclear fission
nuclear fusion
nuclear reaction
chemical equilibrium
inhibitor
catalyst
reaction rate
kinetic molecular theory
percent yield
excess reactant
limiting reactant
dissolution reaction
activation energy
endothermic
exothermic

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

atoms and molecules Word Search

Type
Word Search
Description

oxygen atom
water molecule
sodium chloride
electrical charge
neon
quark
isotope
energy level
matter
chemical bond
ionic bond
covalent bond
nuclear force
electromagnetic force
hydrogen
bohr model
atomic theory
elements
periodic table
carbon
nobel gases
ion
electron cloud
orbitals
atomic mass
subatomic particle
nucleus
neutron
electron
proton