Joshua and I searched the Internet to find the answer. We found out that salt works best above 15 degrees Farenheit. It helps keep water from freezing on the roads because it lowers the freezing point of water. Sand is used differently. It keeps new ice from forming and helps to keep cars and trucks from slippping on the ice. Cool stuff!
Sage and I reviewed information online. We learned that salt is considered a de-icing agent. Salt lowers the freezing temperature of water to prevent ice from forming at the normal temperature. This is known as freezing point depression. Also salt and sand can help cars drive better on the icy roads according to Sage. Our resources are posted below.
The boys and I watched a video showing how salt lowers the freezing point of water. The boys said they put salt on the roads so they don't ice up and get slippery. They said the sand helps the tires get a better grip on the road.
Brooke MartinJanuary 8, 2014 at 4:33 PM Bella Graces theory was that the salt keeps the cars from sliding on the road. We discovered this to be true as the salt provides traction between the road and the tread on the tires. We also discovered that the salt helps lower the temperature the water will freeze at, helping it to melt! Bella Grace and enjoyed doing this research together!
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ReplyDeleteJoshua and I searched the Internet to find the answer. We found out that salt works best above 15 degrees Farenheit. It helps keep water from freezing on the roads because it lowers the freezing point of water. Sand is used differently. It keeps new ice from forming and helps to keep cars and trucks from slippping on the ice. Cool stuff!
ReplyDeleteThank you for taking the time to research and teach us!
DeleteLove, Room 201 All-Stars!
Sage and I reviewed information online. We learned that salt is considered a de-icing agent. Salt lowers the freezing temperature of water to prevent ice from forming at the normal temperature. This is known as freezing point depression. Also salt and sand can help cars drive better on the icy roads according to Sage. Our resources are posted below.
ReplyDeletehttp://www.wisegeek.org/why-do-they-put-salt-on-icy-roads.htm
http://www.wisegeek.org/why-do-they-put-salt-on-icy-roads.htm
Thank you for sharing your resources that you used to research about sand and salt on roads.
DeleteLove, Room 201 All Stars
The boys and I watched a video showing how salt lowers the freezing point of water. The boys said they put salt on the roads so they don't ice up and get slippery. They said the sand helps the tires get a better grip on the road.
ReplyDeleteIt was cool to find out that we watched the same informational video at school that you guys watched at home!
DeleteLove, Room 201 All Stars
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ReplyDeleteBrooke MartinJanuary 8, 2014 at 4:33 PM
ReplyDeleteBella Graces theory was that the salt keeps the cars from sliding on the road. We discovered this to be true as the salt provides traction between the road and the tread on the tires. We also discovered that the salt helps lower the temperature the water will freeze at, helping it to melt! Bella Grace and enjoyed doing this research together!
ReplyDelete
We loved reading about Bella Grace's theory! She is exactly right and we have enjoyed doing more research this week!
DeleteLove, Room 201 All Stars