Waves and the electromagnetic spectrum crossword: crossword puzzle for Grade 9, page 1 preview

Crossword puzzle · Science

Waves and the electromagnetic spectrum crossword · Grade 9

Solve a crossword of up to 13 words about waves and the electromagnetic spectrum from short definition clues, with a word bank to help. Builds vocabulary, spelling and reading for meaning.

Grade 9 · ages 14 to 15
Easy
20 to 30 minutes
1 page
Free

The answer key is a separate page for grown-ups. Sign in to download it.

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The crossword clues

Directions: Read each clue and pick the answer from the word bank. Write one letter in each box.

Word bank
DIFFRACTION · INFRARED · LONGITUDINAL · MICROWAVE · NODE · PHOTON
POLARIZED · RADIO · REDSHIFT · RESONANCE · STANDING WAVE · ULTRAVIOLET · X-RAY
Across
3 Stretching of light toward longer wavelengths from a receding source (8)
7 Describes a wave whose particles vibrate along its direction of travel (12)
8 High-energy wave that passes through soft tissue but not bone (1, 3)
10 Spreading of waves around obstacles or through gaps (11)
11 Large vibration when a push matches an object's natural frequency (9)
12 Wave pattern that seems to stay in place, with fixed nodes (8, 4)
Down
1 A single packet, or particle, of light energy (6)
2 Describes light whose waves vibrate in only one direction (9)
3 ___ waves: longest-wavelength part of the spectrum (5)
4 Invisible light we feel as heat (8)
5 Invisible light beyond violet that causes sunburn (11)
6 Wave used for cooking and radar, between radio and infrared (9)
9 Point on a standing wave that does not move (4)

What your child practices

Your child builds vocabulary, spelling and reading for meaning.

Grades and ages: Grade 9, ages 14 to 15
Time: About 20 to 30 minutes
Subject: Science
Level: Easy for Grade 9
Answer key: Yes, for grown-ups who sign in
Printing: 1 page, US Letter or A4, low-ink option
Updated: October 15, 2026

How to use it

Read the first across clue together so the format is clear. Use a pencil so mistakes rub out easily, and check every answer at the end. It is one of the easier sheets for Grade 9, good as a warm-up or a first look at the topic.

An answer key comes with it as a separate page that grown-ups download after signing in.

Tip for grown-ups: Use the letter count after each clue and any crossing letters when a clue gets stuck.

Done on paper? A grown-up can record it on the child's page in PlayOwl; downloading alone doesn't count as finished.