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What else can I help you with?
What would happen if there were no gaps in a bridge?
Expansion and contraction with heat and cold causes the road to swell and shrink. the gaps are for that purpose so the road or bridge would buckle and break if they were not there! Before this was discovered things broke often
Matter changes state because of?
Matter changes state because of temperature and pressure. These quantities bring change.
Give an example of how thermal expansion has been used for good and wise stewardship in God's world?
Well, friend, one beautiful example of thermal expansion being used for good stewardship is in the design of bridges. Engineers use the principles of thermal expansion to ensure that bridges have room to expand and contract with temperature changes, preventing damage and ensuring their longevity. It's a wonderful harmony between nature's laws and human ingenuity, creating structures that can stand the test of time while respecting the environment.
How does large variations between day and night temperatures cause weathering?
During the warm day, things expand from the increased heat. During the cold night, things contract as heat is lost. This process of expansion and contraction creates cracks and other stress points that cause weathering.Hence the temperatures cause weathering. Note: There are few substances that this expansion and contraction can be seen with the naked eye, but even the minute changes cause weathering, and when substances like water get into the microscopic cracks then freeze, it magnifies the effects as water expands when it freezes while other substances contract when they cool down.
Will glass expand when heated?
No. Heating and cooling do not change the mass of an object. Changes in temperature very often change the volume of an object, however, which means that the density of the object changes. Heating usually causes an object to expand, which means that its density goes down. Its mass, and therefore its weight, does not change.
Why do railway lines have gaps in them?
to allow for the thermal expansion or contraction
Is an Expansion and contraction with regard to weathering are caused by rusting?
Expansion and contraction in weathering are caused by temperature changes, not rusting. Rusting is a chemical process that occurs when iron reacts with oxygen in the presence of water, leading to the formation of iron oxide (rust). However, rusting can contribute to the weakening and eventual breakdown of materials, which may then be more susceptible to expansion and contraction due to temperature changes.
Where does thermal expansion and contraction occur?
Thermal expansion and contraction occur in materials when they are exposed to changes in temperature. This can happen in solids, liquids, and gases, leading to changes in volume, length, or density of the material. It is a common phenomenon experienced in everyday objects and structures.
Is thermal expansion and contraction a physical change?
Yes, thermal expansion and contraction are physical changes. They result from the change in temperature of a material, causing its molecules to either spread out (expansion) or come closer together (contraction), without altering the chemical composition of the substance.
What is temperature measured to?
Temperature is usually measured via expansion/contraction of a liquid (liquid thermometer), differences in expansion/contraction of two metals (bi-metallic strip thermometer), changes in electrical resistance (thermistor or thermocouple) or radiant energy (for example: a pyrometer)
What was the problem withn bridges made out of iron?
Expansion and contraction with changes in temperature. Rust. Weight vs. durability ratio.
What is measured using temperature?
Temperature is usually measured via expansion/contraction of a liquid (liquid thermometer), differences in expansion/contraction of two metals (bi-metallic strip thermometer), changes in electrical resistance (thermistor or thermocouple) or radiant energy (for example: a pyrometer)
How does expansion and contraction of matter differ from a change in state of matter?
the matter always stays the same, expansion and contraction just means the matter is becoming more/less spread out from one another. A change in the state of matter is turning from solid-liquid-gas. The amount of matter always stays the same!
What is used to measure temperature?
Temperature is usually measured via expansion/contraction of a liquid (liquid thermometer), differences in expansion/contraction of two metals (bi-metallic strip thermometer), changes in electrical resistance (thermistor or thermocouple) or radiant energy (for example: a pyrometer)
What are some of the uses of expansion and contraction?
Expansion and contraction are commonly used in materials to accommodate temperature changes, prevent warping or cracking, and ensure structural stability. This physical property is also used in applications such as thermostats, bimetallic strips, and in the design of bridges and buildings to account for thermal variations. Additionally, expansion joints are used in infrastructure to absorb movement due to temperature changes and prevent damage.
What are two examples of uses of the expansion and contraction materials?
Expansion materials can be used in bridges and buildings to accommodate changes in temperature and prevent cracking. Contraction materials are commonly used in pavement construction to control the cracking caused by shrinkage as the material cools.
Why are bolts on railroad tracks in oval holes?
To allow for expansion and contraction of the railroad tracks due to temperature changes. The oval shape of the holes permits the bolts to move slightly within the track to accommodate these changes, helping to prevent buckling or warping of the tracks.
