Relativity and quantum ideas word scramble · Grade 12

The scrambled words and clues

Directions: Unscramble the letters to make a word that matches the clue. Write one letter in each box.

• Describes unstable nuclei that give off radiation
• Nearly massless particle that barely interacts with matter
• Slowing of clocks at high speed or in strong gravity
• ___'s constant: links a photon's energy to its frequency
• Splitting of a heavy nucleus, which releases energy
• Four-dimensional fabric that combines space and time
• ___ principle: position and momentum cannot both be known exactly
• Smallest discrete amount of energy or of another quantity
• Joining of light nuclei, as in the core of the Sun
• Device producing an intense beam of light of a single color
• Time for half of a radioactive sample to decay
• Fundamental particle that makes up protons and neutrons