Thermal Physics
Oeiras International School
Oeiras International School
Gonçalo Diogo Santos, Yr. 11.1
Mr. Bruce Lomba
Monday, May 6, 2013
Gonçalo Diogo Santos, Yr. 11.1
Mr. Bruce Lomba
Monday, May 6, 2013
Thermal Physics (Heat)
Thermal Physics (Heat)
One World Essay
One World Essay
Introduction
On this essay I am going to investigate about how thermal physics interfere with the construction of railways. I was given the possibility to choose between explaining how thermal physics is used in the design of railways or roads and bridges. I chose to explain how it is used in railways because I find it particular more interesting. After that, I will explain what Thermal Expansion is. Posteriorly I will be discussing the physics role when designing railways. To complete my One World Essay, I am going to discuss 2 world aspects: Environmental and Economical. I will be talking through the pros and cons. I think both these world aspects have a lot to do with the topic being studied, including its effect.
Thermal Expansion?
In today’s days heat, energy and temperature have a significant effect on our lives. We are highly sensitive to hot and cold. We think about it in almost everything we do.
Thermal expansion is the tendency of matter to change in volume in response to a change in temperature. Heat (thermal energy) causes increased atomic motion in materials, and this change in the kinetic energy of the atoms and molecules of a material will cause it to increase in volume.
The equation of Thermal Expansion is ΔL = αLΔT. Being ΔL a particular length measurement. ΔT is the rate of change of the linear dimension per unit change in temperature. L is the original length. The coefficient of thermal expansion is different in every material: α.
Expansions in Solids
Materials generally change their size when subjected to a temperature change while the pressure is held constant. In the special case of solid materials, the pressure does not have a reasonable
Oeiras International School
Gonçalo Diogo Santos, Yr. 11.1
Mr. Bruce Lomba
Monday, May 6, 2013
Gonçalo Diogo Santos, Yr. 11.1
Mr. Bruce Lomba
Monday, May 6, 2013
Thermal Physics (Heat)
Thermal Physics (Heat)
One World Essay
One World Essay
Introduction
On this essay I am going to investigate about how thermal physics interfere with the construction of railways. I was given the possibility to choose between explaining how thermal physics is used in the design of railways or roads and bridges. I chose to explain how it is used in railways because I find it particular more interesting. After that, I will explain what Thermal Expansion is. Posteriorly I will be discussing the physics role when designing railways. To complete my One World Essay, I am going to discuss 2 world aspects: Environmental and Economical. I will be talking through the pros and cons. I think both these world aspects have a lot to do with the topic being studied, including its effect.
Thermal Expansion?
In today’s days heat, energy and temperature have a significant effect on our lives. We are highly sensitive to hot and cold. We think about it in almost everything we do.
Thermal expansion is the tendency of matter to change in volume in response to a change in temperature. Heat (thermal energy) causes increased atomic motion in materials, and this change in the kinetic energy of the atoms and molecules of a material will cause it to increase in volume.
The equation of Thermal Expansion is ΔL = αLΔT. Being ΔL a particular length measurement. ΔT is the rate of change of the linear dimension per unit change in temperature. L is the original length. The coefficient of thermal expansion is different in every material: α.
Expansions in Solids
Materials generally change their size when subjected to a temperature change while the pressure is held constant. In the special case of solid materials, the pressure does not have a reasonable