PHYSICAL SCIENCE-ASSESSMENT NO.1

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Across
  1. 2. Theory that states that the center of the universe is the sun.
  2. 5. Star has reached the end of its life and explodes in a brilliant burst of light.
  3. 6. Pertaining to stars.
  4. 8. Anti-particle of neutrons.
  5. 10. A colorless, odorless, tasteless and non-toxic gas and termed as the second lightest element with element symbol of He.
  6. 12. Subatomic particles with neutral charge.
  7. 13. Major branch in science dealing with matter, energy, motion, forces and other non-living entities.
  8. 15. Anti-particle of protons.
  9. 17. Anti-particle of electrons.
  10. 18. Branch of Science that deals with celestial or heavenly bodies and its phenomena.
  11. 19. Study involves the origin and evolution of the universe, from the Big Bang to today and on into the future.
  12. 23. A particle and its antiparticle collide and disappear, releasing energy.
  13. 25. Charged electrons and protons first became bound to form electrically neutral hydrogen atoms.
  14. 27. Subatomic particles with negative charge.
  15. 29. NUMBER The number of protons in an atom. In a neutral atom, number of protons is equal to the number of electrons.
  16. 30. A substance of the same kind of atom that cannot be broken down into simpler forms by physical or chemical methods.
Down
  1. 1. This theory postulates that the universe started from a singularity of explosion and inflation.
  2. 3. Composed of 2 or more elements of different kinds.
  3. 4. Splitting of nuclei to release energy.
  4. 7. Combination of two nuclei to release energy.
  5. 9. This element was believed to be the first element synthesized when the universe had cooled down and expanded enough to allow the formation of an atom.
  6. 11. Subatomic particles with positive charge.
  7. 14. Greek word which means indestructible.
  8. 16. Charged electrons and protons first became bound to form electrically neutral hydrogen atoms.
  9. 20. Science area which dedicates its interest in chemical structure, characteristics and behavior
  10. 21. Theory of exponential expansion of space in the early universe
  11. 22. Is the process that creates new atomic nuclei from pre-existing nucleons, primarily protons and neutrons.
  12. 24. Smallest unit of matter that have all the properties of an element.
  13. 26. SCIENCE Field of Science dealing with living entities.
  14. 28. Displacement of spectral lines toward longer wavelengths (the red end of the spectrum) in radiation from distant galaxies and celestial objects.