Free Technology for Teachers: Why Does the Road Crack?

One of my favourite issues to do lately is to experience bikes with my daughters. Sometimes I even document these rides on Strava as a result of my older daughter now needs to maintain observe of how briskly she will be able to go down a bit of part of street in our neighborhood (present document 10.5mph). When we had been using earlier this week she complained in regards to the cracks within the pavement in a single a part of our neighborhood and requested, “why does the street crack?” 

I did my greatest to reply my daughter’s query of “why does the street crack?” by explaining that there’s a lot of water within the floor in our space. When that water freezes it expands and pushes up on the pavement which then makes it crack. She’s six, so I’m undecided she fairly obtained it even once I made the analogy to certainly one of our clay backyard pots cracking for a similar purpose final winter. 

As I nearly at all times do when my daughters ask me a query that I have never considered in a very long time, I turned to YouTube looking for a visible rationalization of why roads crack within the winter. After a bit of looking I discovered this video from the Minnesota Department of Transportation. Jump to the 1:14 mark within the video to see an outdated visible of what occurs when moist soil freezes. 

This matter is a superb one for an animated rationalization. Student can use some easy animation instruments to create a proof of what occurs when water and or soil freezes and pushes up in opposition to a hard and fast or inflexible object. Register for my new Animated Explanations course to learn to create and use animated explanations in your classroom.