Thermal Expansion
By: Morgan Halbur
Thermal Expansion:
When an object or substance gets colder it contracts. When an object or substance gets heated it expands.
Particles:
Cold- They move very slowly. They barely move throughout the object or substance.
Hot- They move very fast and quick throughout the whole object or substance.
Real World Examples:
Railroad Tracks
When the train runs on the tracks the metals touch each other which creates heat. When it creates heat the train tracks expands from the heat. After awhile when the train has passed the tracks will begin to contract again because of the cool air.
Hot Air Balloons
Before you can take off on the hot air balloon you have to put air into the top so then it will fly up. The air that you put in there has to be hot air so then the balloon will expand and take off.
Balloon Outside in Winter
When you have a balloon inside it will stay the same size until the temperature changes to hotter or colder. If you take a balloon outside in winter the balloon will contract because of the cold air that it is taking in.
Ocean Rise and Expand
Sea Level Rise
The changes in the sea level are mainly caused by thermal expansion. As they heat the ice melts and flows into the water which expands the water and it may flow over. As seawater gets farther inland, it can cause destructive erosion, flooding of wetland, contamination of aquifers and agricultural soils, and lost habitat for fish, birds, and plants. Which has an effect on our life style. Our roads could break apart or the flooding could destroy our homes. We have scientists opinion and facts about the ocean risings. I think we have plenty of evidence for this so it is true.