https://padlet.com/mralexc/mrchewisgreat01 The Spirit of 2019 6A ZHPS en-us 2019-07-31 15:18:48 UTC 2020-04-28 15:55:57 UTC hello@padlet.com https://imgglb.padletcdn.com/v13/image?t=g_auto&url=https%3A%2F%2Fpadlet.net%2Ficons%2Fpng%2F1f913.png MrAlexC https://padlet.com/mralexc/mrchewisgreat01/wish/372830557 Metal tracks during a hot day

]]> 2019-07-31 15:20:14 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372830557 https://padlet.com/mralexc/mrchewisgreat01/wish/372897295 On a hot day, when the temperature is high, the bridge will gain heat and will expand. The rollers are placed to allow the bridge to expand without scraping the ground.
On a cold day, when the temperature is low, the bridge will lose heat and contract.
Bridges’ expansion and contraction:]]> 2019-08-01 03:18:15 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372897295 https://padlet.com/mralexc/mrchewisgreat01/wish/372897878 On a very cold day, train tracks will crack as it loses heat and contract.]]> 2019-08-01 03:22:12 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372897878 https://padlet.com/mralexc/mrchewisgreat01/wish/372898054 The telephone towers are placed not too far from one another to allow the wires to gain heat and expand and lose heat and contract.]]> 2019-08-01 03:23:43 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372898054 https://padlet.com/mralexc/mrchewisgreat01/wish/372898688 Tiles are spaced far apart so that on a hot day, they will not crack when they gain heat from the surrounding and expand.]]> 2019-08-01 03:30:18 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372898688 https://padlet.com/mralexc/mrchewisgreat01/wish/372898711 When you cannot remove the lid from the jar, you can place only the lid in hot water so that it gains heat and expands or you can place only the jar in cold water so that it loses heat and contracts. When you do either of these suggestions, the lid will be able to be removed easily from the jar.
Expansion and contraction of a jar:]]> 2019-08-01 03:30:36 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372898711 https://padlet.com/mralexc/mrchewisgreat01/wish/372900154 Wassup]]> 2019-08-01 03:46:10 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372900154 https://padlet.com/mralexc/mrchewisgreat01/wish/372900473 When a something hot flows through the pipe, the pipe will gain heat and expand. Thus, the pipes have to be very flexible in order not to cause the pipes to explode. One way to add more flexibility to the pipes by adding expansion loops. ]]> 2019-08-01 03:50:08 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372900473 https://padlet.com/mralexc/mrchewisgreat01/wish/372900744 How thermometers work]]> 2019-08-01 03:53:14 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372900744 https://padlet.com/mralexc/mrchewisgreat01/wish/372901247 When liquids expands, it increases in volume]]> 2019-08-01 03:59:56 UTC https://padlet.com/mralexc/mrchewisgreat01/wish/372901247