2007-02-21 12:37:17 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Geography
I need it for homework and I can't find the answer in the book. Thanks!
2007-02-21 12:46:30 · update #1
that's ok at least they work faster than the south when it comes to road repairs
2007-02-21 12:41:13 · answer #1 · answered by Monet 6 · 0⤊ 0⤋
This is called " Frost Heave". When the ground freezes moisture expands and pushes the earth upward and when snowplows try and clear the roads they take along with it the pavement thus creating pothole effects and cracks that need to be repaired on a constant basis.
2007-02-21 20:57:43 · answer #2 · answered by ibithedust 3 · 0⤊ 0⤋
The answer is SALT. I live in Michigan and it is 24/7/365 road construction, and it starts every spring. The salt corrodes the asphalt. The only place in the state that does not have pot holes is the Zilwakue (sorry, can't spell) bridge, because they do not salt it in the winter.
2007-02-21 21:02:01 · answer #3 · answered by littlepitz2 1 · 0⤊ 0⤋
When the snow plows clear the road in northern states, sometimes the surface gets damaged. There can also be damage from frost heaves.
2007-02-21 20:40:45 · answer #4 · answered by Ginger/Virginia 6 · 0⤊ 0⤋
because all roads get cracks and holes which get rainwater into them. up north it freezes and ice expands causing whats called heaving allowing even more water and ice to get below the surface.also northern roads having more hills and valleys have a problem with underlayers washing out from heavy rain.
down south flat roads no ice. just a lot heat.
2007-02-21 20:43:59 · answer #5 · answered by cocobch.rm 2 · 0⤊ 0⤋
Thermal expansion and contraction crack a lot of kinds of road materials. With the cold of the northern states, there's a lot of that contraction going on.
2007-02-21 20:52:26 · answer #6 · answered by Anonymous · 1⤊ 0⤋
The hard freezing in the North would be responsible for this, when water gets down in the cracks and freezes it has the potential to crack. Just as this occurs naturally in rocks. Also the constant use of snow plow machinery and salt.
2007-02-21 20:42:10 · answer #7 · answered by molenz69 2 · 1⤊ 0⤋
because they use more salt on the roads during the winter time. Also, most of their roads are made of concrete, not asphalt/tar.
2007-02-21 20:45:35 · answer #8 · answered by Kelley B 1 · 0⤊ 0⤋
Frost and snow damage?
2007-02-21 20:39:59 · answer #9 · answered by davidbgreensmith 4 · 0⤊ 0⤋