🧪 Science with Sarah: ‘Snow’ in a jar! ❄️

This experiment explores the different densities in our atmosphere

👉 Watch the video of Sarah’s school science experiment here!

Hello parents, teachers and students! If you’re looking for fun way to explore meteorology, this experiment is for you!

Be sure to check out GMSA@9 on Wednesdays when Meteorologist Sarah Spivey does the demonstrations and explains the science behind it.

Science with Sarah: Invite KSAT to your school for live science experiments. (KSAT)


  • A 16 oz mason jar
  • Water
  • White paint
  • Iridescent glitter
  • Baby oil
  • Alka-Seltzer tablet


  • STEP 1: Add a little bit of water to the bottom of the jar and stir in a bit of white paint
  • STEP 2: Add glitter to the paint/water mixture and stir
  • STEP 3: Add the baby oil to the jar until the jar is about 3/4 full.
  • STEP 5: Pop an Alka-seltzer tablet into the jar and watch as the “snow” bubbles up and down through the jar


If you’d like Sarah and David to come to your school and conduct a science experiment live on KSAT, email sciencewithsarah@ksat.com.

Parents and guardians: upload a video of your child performing the activity by clicking here. Send it in and you might see it on GMSA @ 9 a.m.!

About the Authors:

Sarah Spivey is a San Antonio native who grew up watching KSAT. She has been a proud member of the KSAT Weather Authority Team since 2017. Sarah is a Clark High School and Texas A&M University graduate. She previously worked at KTEN News. When Sarah is not busy forecasting, she enjoys hanging out with her husband and cat, and playing music.

Ben Spicer is a digital journalist who works the early morning shift for KSAT.