Setting up the board…
Take your time — nothing here can go wrong, and you can always try again.
Ready?
EM Spectrum
Take your time — nothing here can go wrong, and you can always try again.
Full screen — no distractions
Frequently Asked Questions
- What is "EM Spectrum" and how do you play it?
- EM Spectrum is a free, interactive science game designed for 9th Grade students. Wire each kind of electromagnetic wave to its approximate wavelength. It supports 1-4 player(s), takes about 20 min, and is rated hard difficulty.
- Is this game free to play?
- Yes — EM Spectrum is 100% free with no signup required. Just open the page and start playing instantly in your browser on any device.
- What age or grade level is this game for?
- This game is designed for 9th Grade students. The science content is curriculum-aligned for 9th grade level, making it a great supplement to classroom learning.
- Can my child play this game on a tablet or phone?
- Yes. All LittleActivity games work on any device — desktop, tablet, or phone. No app download needed; games run directly in the browser.
- What science skills does this game cover?
- EM Spectrum covers 9th grade science skills through interactive gameplay. It builds problem-solving, critical thinking, and subject fluency in a fun, no-pressure environment.
More 9th Grade Science Games
Plate Tectonics
Put the history and processes of plate tectonics in order.
hard20 min
Earthquakes
Wire each earthquake term to its meaning.
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Volcanoes
Sort volcanoes and features by volcano type.
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The Rock Cycle
Wire each rock-cycle process to what it does.
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Weather Systems
Wire each weather-system idea to its meaning.
hard20 min
Climate Change
Read about the carbon cycle and climate evidence, and tap the proof.
hard20 min