Sound · Puzzle

Crossword

6 clues from this topic’s key words.

Tap a square, then tap the letters under the grid. Tap the square again to change between across and down.

Across

Down

Answers
  • 1 down: When the energy of a sound is transferred to a material. Absorption
  • 2 down: The number of waves each second, in hertz (Hz). Frequency
  • 3 down: A thin skin in the ear that vibrates when sound reaches it. Ear drum
  • 4 down: A sound reflected back from a surface. Echo
  • 5 across: A space with no particles in it. Vacuum
  • 6 across: Sound with a frequency too high for humans to hear. Ultrasound

The worksheet

The same crossword as a worksheet to print.

The puzzle booklet (PDF)

The Sound puzzle booklet has the topic’s puzzles and every lesson’s, with their answers. This worksheet is page 2, and its answers are on page 3.