When the ice is that thick it becomes possible to actually drive a car or truck across the ice. While driving on ice sounds like something that people would do just for fun, a lot of people drive across frozen lakes for very practical reasons.
For example, there are people who live year-round on islands within these northern lakes. In the middle of winter the only practical way of traveling to the mainland is by driving across the frozen lakes.
Actually, when the lake is frozen two to three feet deep, this is a perfect opportunity for people living on islands to transport large objects onto or off the islands. Say, for instance, you owned a cabin on a small island in the middle of a lake in Michigan. Suppose you decided that you wanted to build an extra room onto the cabin.
Transporting all the building materials onto the island using a boat would take a lot of work and expense. But if you waited until winter, you could easily drive all the building materials across the lake.
How can you tell if a lake is frozen solid enough to drive on? The surest way to know is to wait until several other cars and trucks have safely driven across the ice. Even then, you should always be extra careful when driving across a frozen lake.
It's possible that one section of the lake has currents that prevent the lake from freezing solid. Or there might be a river or stream that brings slightly warmer water into one part of the lake. So even though most of the lake was frozen solid, one section of the lake could have thin ice.
Usually it takes at least two to three weeks of very cold weather before deep ice is formed on a lake. Here in the northern United States, deep ice doesn't form until mid-January, at the earliest. (In northern Canada and Alaska lakes sometimes freeze solid as early as November or December.)
Do the tires of cars slip when they drive across ice? Yes, sometimes they do. But almost every car and truck that drives on ice has snow tires, which creates extra friction between the tires and the ice. Some people also choose to put chains on their tires, which gives the tires an even stronger grip against the ice.
After a few cars have driven across a particular path on a lake the ice actually becomes a sort of road. If you walked up to such a road and did not know that the road was traveling over a lake, you might never suspect that the cars and trucks are actually driving across solid ice.
當(dāng)冰是厚的，它就可以在冰上駕駛汽車或卡車。雖然在冰上駕駛的聲音，人們會做的只是為了好玩，很多人開車穿越結(jié)冰的湖泊非常實(shí)際的原因。
例如，有人在這些北方湖泊中常年生活在島嶼上。到了冬天，到大陸旅行的方法就是穿過結(jié)冰的湖泊。
事實(shí)上，當(dāng)這個(gè)湖被凍結(jié)2到三英尺深的時(shí)候，這是一個(gè)很好的機(jī)會，人們生活在島嶼上，把大的物體運(yùn)送到島嶼上。比如說，你在密歇根的一個(gè)小島嶼上擁有一個(gè)小木屋。假設(shè)你決定要在客艙內(nèi)建造一間額外的房間。
用一條船把所有的建筑材料運(yùn)到島上，會花費(fèi)很多的工作和費(fèi)用。但是，如果你等到冬天，你可以很容易地駕駛所有的建筑材料在湖。
你怎么能告訴你，如果一個(gè)湖是凍結(jié)的固體足以驅(qū)動？知道的最可靠的方法是等待幾輛車和卡車安全地穿過冰。即使在那，你也應(yīng)該小心開車穿越一個(gè)結(jié)冰的湖。
湖的一個(gè)部分有一段水流，可以阻止湖水結(jié)冰。或有可能是一條河流或小溪，帶著稍微溫暖的水進(jìn)入湖的一部分。因此，即使大部分的湖泊是冰凍的固體，一部分的湖可能有薄冰。
在一個(gè)湖上形成冰之前，通常需要至少2到三個(gè)星期的寒冷天氣。在這里，在美國北部，深冰不形成，直到一月中旬，在最早。（在加拿大北部和阿拉斯加的湖泊，有時(shí)也會像十一月或十二月那樣被凍結(jié)。）
當(dāng)他們開車穿越冰時(shí)，汽車的輪胎打滑嗎？是的，有時(shí)他們做。但幾乎所有的汽車和卡車，在冰上駕駛的雪輪胎，這會造成額外的摩擦之間的輪胎和冰。有些人還選擇把鏈放在他們的輪胎，這給了輪胎更強(qiáng)大的抓地力，對冰。
幾輛車經(jīng)過一條特別的道路，在一個(gè)湖上，冰實(shí)際上成了一種道路。如果你走到一條路，不知道路是在湖上行駛，你可能永遠(yuǎn)不會懷疑，汽車和卡車實(shí)際上是在固體冰上行駛。
For example, there are people who live year-round on islands within these northern lakes. In the middle of winter the only practical way of traveling to the mainland is by driving across the frozen lakes.
Actually, when the lake is frozen two to three feet deep, this is a perfect opportunity for people living on islands to transport large objects onto or off the islands. Say, for instance, you owned a cabin on a small island in the middle of a lake in Michigan. Suppose you decided that you wanted to build an extra room onto the cabin.
Transporting all the building materials onto the island using a boat would take a lot of work and expense. But if you waited until winter, you could easily drive all the building materials across the lake.
How can you tell if a lake is frozen solid enough to drive on? The surest way to know is to wait until several other cars and trucks have safely driven across the ice. Even then, you should always be extra careful when driving across a frozen lake.
It's possible that one section of the lake has currents that prevent the lake from freezing solid. Or there might be a river or stream that brings slightly warmer water into one part of the lake. So even though most of the lake was frozen solid, one section of the lake could have thin ice.
Usually it takes at least two to three weeks of very cold weather before deep ice is formed on a lake. Here in the northern United States, deep ice doesn't form until mid-January, at the earliest. (In northern Canada and Alaska lakes sometimes freeze solid as early as November or December.)
Do the tires of cars slip when they drive across ice? Yes, sometimes they do. But almost every car and truck that drives on ice has snow tires, which creates extra friction between the tires and the ice. Some people also choose to put chains on their tires, which gives the tires an even stronger grip against the ice.
After a few cars have driven across a particular path on a lake the ice actually becomes a sort of road. If you walked up to such a road and did not know that the road was traveling over a lake, you might never suspect that the cars and trucks are actually driving across solid ice.
當(dāng)冰是厚的，它就可以在冰上駕駛汽車或卡車。雖然在冰上駕駛的聲音，人們會做的只是為了好玩，很多人開車穿越結(jié)冰的湖泊非常實(shí)際的原因。
例如，有人在這些北方湖泊中常年生活在島嶼上。到了冬天，到大陸旅行的方法就是穿過結(jié)冰的湖泊。
事實(shí)上，當(dāng)這個(gè)湖被凍結(jié)2到三英尺深的時(shí)候，這是一個(gè)很好的機(jī)會，人們生活在島嶼上，把大的物體運(yùn)送到島嶼上。比如說，你在密歇根的一個(gè)小島嶼上擁有一個(gè)小木屋。假設(shè)你決定要在客艙內(nèi)建造一間額外的房間。
用一條船把所有的建筑材料運(yùn)到島上，會花費(fèi)很多的工作和費(fèi)用。但是，如果你等到冬天，你可以很容易地駕駛所有的建筑材料在湖。
你怎么能告訴你，如果一個(gè)湖是凍結(jié)的固體足以驅(qū)動？知道的最可靠的方法是等待幾輛車和卡車安全地穿過冰。即使在那，你也應(yīng)該小心開車穿越一個(gè)結(jié)冰的湖。
湖的一個(gè)部分有一段水流，可以阻止湖水結(jié)冰。或有可能是一條河流或小溪，帶著稍微溫暖的水進(jìn)入湖的一部分。因此，即使大部分的湖泊是冰凍的固體，一部分的湖可能有薄冰。
在一個(gè)湖上形成冰之前，通常需要至少2到三個(gè)星期的寒冷天氣。在這里，在美國北部，深冰不形成，直到一月中旬，在最早。（在加拿大北部和阿拉斯加的湖泊，有時(shí)也會像十一月或十二月那樣被凍結(jié)。）
當(dāng)他們開車穿越冰時(shí)，汽車的輪胎打滑嗎？是的，有時(shí)他們做。但幾乎所有的汽車和卡車，在冰上駕駛的雪輪胎，這會造成額外的摩擦之間的輪胎和冰。有些人還選擇把鏈放在他們的輪胎，這給了輪胎更強(qiáng)大的抓地力，對冰。
幾輛車經(jīng)過一條特別的道路，在一個(gè)湖上，冰實(shí)際上成了一種道路。如果你走到一條路，不知道路是在湖上行駛，你可能永遠(yuǎn)不會懷疑，汽車和卡車實(shí)際上是在固體冰上行駛。