Thorium Word Search
Thorium, as a word search. 12 words drawn from the terms and ideas of a school subject sit hidden in a 15×15 letter grid, running in every direction. Drag across a word to claim it, and clear the board to finish.
Words to find: THORIUM, ISOTOPE, RADIOACTIVE, NUCLEAR, FISSION, FUSION, REACTOR, ELECTRON, PROTON, NEUTRON, ATOM, NUCLEUS.
Words run in any of eight directions, backwards included — if one refuses to turn up, try reading the grid right to left.
Thorium word list, defined
General dictionary meanings, not specific to this puzzle's theme.
- THORIUM /ˈθɔːriəm/ · noun
- A naturally occurring, silvery, radioactive chemical element of the actinide series, with the symbol Th and atomic number 90. In nuclear engineering, the term often refers to thorium-232 or fuels and reactor systems based on it.
- ISOTOPE /ˈaɪsoʊˌtaʊp/ · noun
- An isotope is one of two or more forms of the same chemical element that have identical numbers of protons but different numbers of neutrons. Isotopes therefore have nearly identical chemical properties but different atomic masses and may differ in stability and radioactivity.
- RADIOACTIVE /ˌreɪ.di.oʊˈæk.tɪv/ · adjective
- Having unstable atomic nuclei that spontaneously emit ionizing radiation. Informally, extremely exciting, intense, or dangerously attractive.
- NUCLEAR /ˈnjuː.klɪər/ (British); /ˈnuː.klɚ/ (US) · adjective; informal noun
- Relating to the nucleus of an atom or to energy and weapons produced through nuclear reactions. In figurative use, it means central, fundamental, or concentrated around a core. Related: atomic, radioactive, thermonuclear, radiological.
- FISSION /ˈfɪʃən/ · noun
- The process of splitting into two or more parts, especially the splitting of a heavy atomic nucleus (such as uranium-235) into smaller nuclei with the release of enormous energy. In biology, it also refers to the division of a single-celled organism into two or more daughter cells. Related: splitting, division, cleavage, separation.
- FUSION /ˈfjuːʒən/ · noun
- The process or result of joining two or more distinct things into a single unified whole; in physics, the merging of atomic nuclei with the release of energy. Related: merger, blend, amalgamation, union.
- REACTOR /rɪˈæktə/ (British), /ˈriːæktɚ/ (American) · noun
- A reactor is a vessel, structure, or device in which a controlled chemical, biological, or nuclear reaction takes place. By extension, the term can refer to the nuclear installation that contains such a device, including its associated systems and personnel. Related: reaction chamber, nuclear installation, furnace, reaction vessel.
- ELECTRON /ɪˈlɛktrɒn/ · noun
- A stable subatomic particle with a negative electric charge, found in all atoms and moving around the nucleus. Electrons are the primary carriers of electricity in solids and are responsible for chemical bonding. Related: negatron, subatomic particle, charged particle, beta particle.
- PROTON /ˈprəʊtɒn/ (British); /ˈproʊtɑːn/ (American) · noun
- A positively charged subatomic particle found in the nuclei of atoms. In South Asian English, the word can also mean a person who supports a proposal, policy, or candidate. Related: hydrogen-1 nucleus, positively charged baryon, hydrogen nucleus.
- NEUTRON /ˈnjuːtrɒn/ · noun
- A neutral, electrically uncharged subatomic particle found in the nucleus of an atom and having a mass slightly greater than that of a proton.
- ATOM /ˈætəm/ · noun
- The smallest unit of an element that retains the chemical properties of that element, consisting of a nucleus of protons and neutrons orbited by electrons. More broadly, the tiniest conceivable particle or amount of something. Related: particle, molecule, unit, speck.
- NUCLEUS /ˈnuːkliəs/ · noun
- A nucleus is the central, typically rounded part of an atom or biological cell, containing genetic material and playing a central role in the cell's activity. More broadly, the term refers to a central, fundamental, or defining part of something. Related: core, center, centre, heart.
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