If you've ever gone outside really early on a cold day in fall, you might have seen a thin layer of sparkly ice crystals covering everything! That ice is called frost, and it can only form if the weather is exactly right! ///Next Generation Science Standards Used in This Video/// K-PS3-1. Make observations to determine the effect of sunlight on Earth’s surface. K-ESS2-1. Use and share observations of local weather conditions to describe patterns over time. ---------- Love SciShow Kids and want to help support it? Become a patron on Patreon: https://www.patreon.com/scishowkids ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow SOURCES: