Module 11 Flashcards
It is the standard we use to determine the intensity of heat present in a substance or object.
Temperature
What are the 4 scales for measuring temperature?
Celsius, Fahrenheit, Kelvin, Rankine
It is the most widely used temperature scale in the world. It is based on both the freezing and boiling points of water under 1 atm of air pressure, and it is the easiest to remember. It scales from zero (0) for the freezing point of water, up to a hundred (100) for boiling point of water.
Celsius, or centigrade (℃)
Celsius (℃) is named after?
Anders Celsius
It is the temperature scale used by countries who still use the English system, like the US. It is derived from the temperature of a brine solution. Its freezing and boiling points are exactly 180°apart.
Fahrenheit scale (℉)
Who is the proponent of the Fahrenheit scale?
Daniel Gabriel Fahrenheit
It is the absolute temperature that is based on the Celsius scale. It is used by scientists to show absolute temperatures, for it is precise enough to do so.
Kelvin scale
It is the absolute degree scale used by scientists who uses the Fahrenheit scale.
Rankine scale
It states that if there are two objects already in equilibrium, anything added to that system will also experience thermal equilibrium.
Zeroth Law of Thermodynamics
Things expand because of heat, like how the hot air balloon flies because hot air expands, becoming less dense, hence rising upwards. Or how railroad tracks have gaps, called expansion joints, that allow it to expand and contract without buckling, or ruining, the tracks.
Thermal Expansion
Objects that transfer heat faster in its system is a _____
conductor
The materials that transfer heat slowly are _____.
insulators
It is the transfer of heat within the system that is projected in one dimension. Simply put, length is the only dimension that changes.
Linear thermal expansion
It is the transfer of heat within two (2) dimensions, specifically in the system’s measured area.
Two-Dimensional thermal expansion
It is the last expansion which tackles three (3) dimensions.
Three-Dimensional or Volumetric, thermal expansion
It is caused by kinetic energy from the object, which we will call body or system. It is a form of energy because it is energy in spontaneous transfer caused by changes in temperature.
Heat (𝑄)
It is defined as the energy required to increase the temperature of one gram by one degree centigrade
Calorie
It is defined as the science of measuring heat.
calorimetry
What are the three important factors of transferred heat?
mass, change in temperature, and the substance’s phase and composition
What law does calorimetry follow?
Law of Conservation of Energy
What are the 3 ways of heat transfer?
Conduction, convection, and radiation
It is the transfer of heat through direct physical contact between two (2) bodies. It is the transfer of heat through molecular motion, and goes from hot to cold.
Conduction
It is the transfer of heat that involves the movement of mass from the body or substance. It goes from hot to cold, in which hotter substance rise, pushing the colder substance down, where they too will be heated, forming a cycle of moving hot and cold masses. This is usually observed in fluids, such as air or water, as seen in weather conditions.
Convection
It is the transfer of heat using the electromagnetic waves, such as light.
Radiation
But, in order for a body to emit or give off radiation, the temperature must be above absolute _____ to do so.
zero (0 𝐾)
