Sound waves (or waves in general) can be a tricky topic for students to grasp, and these cards make for the prefect test prep practice. In this set of 20 task cards students will use sound vocabulary: -pitch -amplitude -frequency -wavelength to compare and contrast different waves using the above vocabulary. The sound waves depicted on the cards are shown as if being viewed with an oscilloscope. Advise students of this so they understand that sound waves are NOT transverse waves. If you're looking for the perfect interactive notebook activity to include with this, you make like my BEST SELLING Sound Wave Interactive Notebook Brochure Light Wave Interactive Notebook Brochure Sound Wave Science-Lib! Included in this product: 20 Sound Wave Task Cards 1 Student Answer Sheet 1 Answer Key I hope that you enjoy this product! I strive very hard to make sure that my products are of high quality and mistake-free. However, if you happen to catch a mistake, please send me a message, and I will fix it promptly. :)