https://padlet.com/oscar_cardenas_stu/7wotuagwfa31 3rd pd en-us 2018-03-02 17:26:32 UTC 2025-03-12 18:25:35 UTC hello@padlet.com oscar_cardenas_stu https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237513111 Windmills were first used many centuries ago to help grind grain, and they still were being used for that task in the 1800s. Such windmills had sails attached to a vertical shaft, which in turn was attached to a grinding stone; as the sails turned the stone, the grain was ground.

]]> 2018-03-02 17:30:41 UTC https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237513111 oscar_cardenas_stu https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237514709 Today, the windmill's modern equivalent - a wind turbine - can use the wind's energy to generate electricity. Wind turbines, like windmills are mounted on a tower to capture the most energy.]]> 2018-03-02 17:33:58 UTC https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237514709 oscar_cardenas_stu https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237516000 Barbed wire was the first wire technology capable of restraining cattle. Wire fences were cheaper and easier to erect than their alternatives.]]> 2018-03-02 17:36:32 UTC https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237516000 oscar_cardenas_stu https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237517006 this is used to construct inexpensive fences and is used top walls surrounding secured property. It is also a major feature of the fortifications in trench warfare ]]> 2018-03-02 17:38:30 UTC https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237517006 oscar_cardenas_stu https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237520399 The First Transcontinental railroad was built crossing the western half of America and it was pieced together between 1863 and 1869. It was 1,776 miles long and served for the Atlantic and Pacific coasts of the United States to be connected by rail for the first time in history.]]> 2018-03-02 17:45:10 UTC https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237520399 oscar_cardenas_stu https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237521274 A train is a form of rail transport consisting of a series of connected vehicles that usually runs along a rail track to transport cargo or passengers.]]> 2018-03-02 17:46:57 UTC https://padlet.com/oscar_cardenas_stu/7wotuagwfa31/wish/237521274