# Heat and Temperature

In: Science

Submitted By uvonya
Words 759
Pages 4
Heat relates to the gases that consist of great numbers of molecules moving in all directions. When they impact on the surface they cause the gas pressure to move, this is what we feel as heat it is basically kinetic energy of motion. Heat is made up of massive numbers of small particles of single atoms or molecules in continuous motion. It’s the behavior of matter in an object and the movement that heat produces. It’s also the connection between pressure, temperature and volume properties of gas.
Heat is energy. It moves in waves like other forms of energy, and can change the matter it touches, by heating up which starts molecules moving. It is what happens to matter that is in motion. The atoms and molecules move back and forth hitting each other causing a form of energy that is in all matter. Heat is a measure of the total inner energy that has been absorbed or transferred from one body to another. Heat is a form of energy that is measured by temperature. Although heat and temperature are used interchangeably, heat and temperature are not equal. Heat is used in chemical reactions to give energy to reactants. Chemical reactions lose energy to the system in the form of heat, which is described as entropy in the Laws of Thermodynamics. If there are any changes in it create changes in temperature
Temperature is the degree how hot or cold something is. It is not energy, it is something that could be measured, it also refers to how fast the molecules and atoms are moving a substance. Temperature has several notations such as Celsius, Fahrenheit and Kelvin. The temperature of a substance normally varies with the average speed of the molecules that it contains, raised to the second power; that is, it is relative to the mean kinetic energy of its constituent particles. Temperature is a measure of the substance's average amount of kinetic energy. Different objects…...

### Similar Documents

#### Temperature

...------------------------------------------------- Temperature Temperature is a measure of the average energy of motion, or kinetic energy, of particles in matter. When particles of matter, whether in solids, liquids, gases, or elementary plasmas, move faster or have greater mass, they carry more kinetic energy, and the material appears warmer than a material with slower or less massive particles. Kinetic energy, a concept of mechanics, is the product of mass and the square of a particle's velocity. In the context of thermodynamics, it is also referred to as thermal energyand the transfer of thermal energy is commonly referred to as heat. Heat always flows from regions of higher temperature to regions of lower temperature. English language speakers refer to an object of low temperature as being cold, and associate various degrees of higher temperature to terms such as luke-warm, warm, hot, and others. Historically, two equivalent concepts of temperature have developed, the thermodynamic description and a microscopic explanation based on statistical physics. Since thermodynamics deals entirely with macroscopic measurements, the thermodynamic definition of temperature, first stated by Lord Kelvin, is stated entirely in empirical, measurable variables. Statistical physics provides a deeper understanding of thermodynamics by describing matter as a collection of a large number of particles, and derives thermodynamic (i.e. macroscopic) parameters as statistical averages of the......

Words: 2251 - Pages: 10

Free Essay

#### Temperature Regulation

...Temperature Regulation A normal, healthy human is able to maintain a constant body temperature of approximately 98.6F despite the temperature of the environment. In a hot environment, the body sends a signal to the brain via the spinal cord to say the body is overheating, the brain then sends a signal back down the spinal cord and tells the body to cool itself by perspiration which evaporates and cools the skin. In cold weather, the body senses the lower temperature and our brain tells us to put more clothes on to warm ourselves up. Temperature Regulation of the Human Body The human body has the remarkable capacity for regulating its core temperature somewhere between 98°F and 100°F when the ambient temperature is between approximately 68°F and 130°F according to Guyton. This presumes a nude body and dry air. The external heat transfer mechanisms are radiation, conduction and convection and evaporation of perspiration. The process is far more than the passive operation of these heat transfer mechanisms, however. The body takes a very active role in temperature regulation. The temperature of the body is regulated by neural feedback mechanisms which operate primarily through the hypothalmus. The hypothalmus contains not only the control mechanisms, but also the key temperature sensors. Under control of these mechanisms, sweating begins almost precisely at a skin temperature of 37°C and increases rapidly as the skin temperature rises above this value. The heat......

Words: 413 - Pages: 2

Free Essay

#### Heat Pump

...trODuct ION tO G rO u N D S O u rc e Heat P uMP SyS teM S chris arkins This note TEC 6, originally published in February 1999, was reviewed by Chris Arkins in January 2004. This summary page includes recent updates to the topic since publication. SUMMARY OF actIONS tOwarDS SuStaINable OutcOMeS Introduction Alternative low energy air conditioning solutions are now commonly sought in preference to typical air conditioning systems for both residential and commercial applications. The industry has seen a growing emergence of ground source heat pump (GSHP) installations throughout Australia over the last five years. A broad spectrum of facilities ranging from domestic housing, hospitals, education facilities, commercial offices and civic buildings to name a few, are now realising the environmental benefits offered by GSHP systems over more commonly used air conditioning systems. This summary note provides a brief overview of the previous note and provides an update on changes that have occurred since. basic Strategies Heat rejection is fundamental to all air conditioning systems. Typically, unsightly roof mounted air cooled condensers and cooling towers are by far the most commonly used method for rejecting heat from a building. Ground source heat pumps are somewhat different to the norm. Basically GSHP are refrigeration machines that provide heating and cooling by using ground water and the earth as a medium to reject and/or absorb heat and as such do not require......

Words: 3545 - Pages: 15

Free Essay

#### Temperature Trends

...Variations in Temperature and Rainfall Extremes during the Recent Past: Three Case Studies from Semi-arid Maharashtra, India Amit G. Dhorde1, Gauri Joshi1 and Anargha A. Dhorde2 1 Department of Geography, University of Pune, Pune – 411 007, amitdhorde@unipune.ernet.in 2 Department of Geography, Nowrosjee Wadia College, Pune 411 001, anargha@yahoo.com “Society’s perception of climate variability and climate change is largely formed by the frequency and the severity of extremes” (IPCC, 2007). Changes in extremes like intense rainfall, floods, heat and cold waves, etc. have impacts on human activities such as agriculture, human health, transportation, urban development and planning and water resource management. One of the major assumptions of the climate change is that the climate of the future will be dominated by increased extremities in weather. To come to such a conclusion we need to assess the present situation. It only after careful investigation that we can formulate future strategies to combat such changes that may be expected to occur and have negative impact on society. Present study attempts to understand trends in extremes of temperature and rainfall at three locations in semi-arid Maharashtra – Aurangabad, Pune and Solapur. Daily temperature and rainfall data for the period 1969-2006 were obtained from India Meteorological Department (IMD). Based on the percentile values, various temperature and precipitation indices were derived from the data. Heat......

Words: 564 - Pages: 3

#### Effects of Temperature

...The Effects of Temperature, pH, Enzyme Concentration , and Substrate Concentration on Catecholase Introduction Enzymes are biological proteins that speed up the reaction rate of a chemical reaction. They work in the human body by lowering activation energy making certain that reactions will initiate. For every action, there is an equal and opposite reaction. In this case, factors that influence the activity of an enzyme are called modulators. If modulators activate enzymes the reaction rate catalyzed will significantly increase, but if the modulator inactivates enzymes the reaction rate catalyzed will significantly decreased (Silverthorn, 2004). The potentially disastrous influence of temperature, pH, enzyme concentration, and substrate concentration on enzymes and other proteins is one reason why these modulators are very strictly regulated by the body (Silverthorn, 2004). Temperature, a measure of the intensity of heat, is an important factor in the activity of enzymes. The velocity of an enzymatic reaction is influenced by temperature. This is because substrates collide with active sites frequently in the presence of rapidly moving molecules. In addition, although these molecules do move rapidly the speed of the reaction drops sharply. In short, thermal agitation causes protein molecules (enzymes) to denature ( breakdown of protein structures). All enzymes have an optimal temperature at which reaction rates go fastest without denaturing the enzyme (Campbell and Reece,......

Words: 1991 - Pages: 8

Free Essay

#### Heat

...Heat of Fusion of Water 4-1: Heat of Fusion of Water The molar heat of fusion for a substance, ∆Hfus, is the heat required to transform one mole of the substance from the solid phase into the liquid phase. In this assignment, you will use a simple coffee cup calorimeter and a thermometer to measure the molar heat of fusion for water. 1. Start Virtual ChemLab, select Colligative Properties, and then select Heat of Fusion of Water from the list of assignments. The lab will open in the Calorimetry laboratory with a beaker of ice on the balance and a coffee cup calorimeter on the lab bench. 2. Click on the Lab Book to open it. Record the mass of the ice on the balance in the data table. If the mass is too small to read, click on the Balance area to zoom in. Note that the balance has already been tared for the mass of the empty beaker. 3. 100 mL of water is already in the coffee cup. Use the density of water at 25 C (0.998 g/mL) to determine the mass of water from the volume. Record the mass in the data table. Make certain the stirrer is On (you should be able to see the shaft rotating). In the thermometer window, click Save to begin recording data to the lab book. Allow 20-30 seconds to obtain a baseline temperature of the water. 4. Drag the beaker from the balance area until it snaps into place above the coffee cup and then pour the ice into the calorimeter. Click the thermometer and graph windows...

Words: 637 - Pages: 3

#### Heat Conversion

...Heat Conversion Name Institution Heat Conversion Matter refers to any substance that occupies space and has weight. It comprises of atoms and molecules that are constantly in motion due to energy that they possess. Energy is present in all matter mostly in form of heat energy. Energy takes various forms and can change from one form to another form. Other than heat energy, various forms of energy include electrical, light, mechanical, chemical, sound and nuclear energy. These different forms of energy can cause a substance to heat up by simply increasing the speed of the molecules in the matter. Molecules therefore, have characteristics of warmth and coldness depending on the form of energy they possess. Since the particles are constantly moving, they possess kinetic energy, which is also one of the various forms of energy. Relationship between heat and kinetic theory of matter Kinetic theory of matter explains that, matter is in a constant random movement. Applying heat on molecules cause the particulars to move in a random motion. Heating transfers heat to nearby molecules in a substance, which becomes excited and then stimulates the surrounding molecules into motion. The process of molecules excitation continues until all molecules move in a vigorous random motion (Goswami et al., 2010). In this process of molecules excitation, the kinetic theory of matter links together with heat. Heat Heat is the transfer of energy that results from......

Words: 928 - Pages: 4

#### Specific Heat

...Chemistry Lab Chemistry Lab Aim: To investigate the specific heat capacity of water, copper and aluminium by using a caloriometer. Results: 1. Ohms Law: I=v/r, equation 3 = E=vlt hence you get E= v2t/r when ohms law is applied to equation 3. 2. De ionized water is used as it is the purest form of water, as it doesn’t contain ions from the soil like normal water which allow the conduction of electricity as normal water allows electrons to flow, thus preventing any extraneous variables to affect the experiment. 3. The value for Tf = 100o as water has a boiling point of 100o 4. SH = 1.00cal.g-1.c-1 m= density x volume (Tf – Ti) = 100 – 19.9 = 1 x 1,000ml = 80.1 = 1,000g EH2O = SH.m.(Tf – Ti) = 1 x 1,000 x 80.1 = 80,100cal Converting to Joules (1cal = 4.184j) 1000*4.184* 80.1= 335,138.4 joules g-1 deg-1 EKettle= V2.t / R V= 240 t= 219s R= 34.7 2402 * 219/34.7 =363,527.38 joules = E of kettle 5. The amount calories required to raise 1 gram of water by 1 degree Celsius is specific heat. Hence 80,100 calories are required to heat up the water, this shows the association between question 4. 6. In question 4, it can be observed that the energy produced by the kettle was 363,527.38 joules, however only = 335,138.4 joules g-1 deg-1 of energy was required to raise the water 80.1 degrees Celsius.......

Words: 841 - Pages: 4

#### Heat

...HEAT 4.1 UNDERSTANDING THERMAL EQUILIBRIUM 1. Define: The measure of the degree of hotness of an object. (a) Temperature Measured in SI unit Kelvin, K A hot object is at a higher temperature than a cold object. Form of energy, measured in Joules, J (b) Heat Heat is transferred from hotter object (higher temperature) to colder object (lower temperature) When an object is heated, it will absorb heat energy and the temperature will increase. When an object is cooled, it will release heat energy and the temperature will decrease. (c) Thermal Two objects are in thermal contact when heat energy contact can be transferred between them. (d)Heat transfer When two objects with different degrees of hotness come into thermal contact, heat energy is transferred between the two objects. (e) Mechanism of Thermal Equilibrium Energy is transferred at a faster rate from the hotter object to the colder object. Energy is also transferred from the colder object to the hotter one, but at a slower rate. There is a net flow of energy from the hotter object to the colder object. (f) Thermal When two objects are in thermal equilibrium, there is Equilibrium no net flow of heat between them. Two objects in thermal equilibrium have the same temperature 60 The hotter object cools down while the colder object warms up . After some time, energy is transferred at the same rate between the two objects. There is no net heat transfer between the objects. The two objects are said to be in thermal......

Words: 3461 - Pages: 14

#### The Study of Heat, Kinetic Energy Theory of Matter, and Temperature

...The Study of Heat, Kinetic Energy Theory of Matter, and Temperature Name University Physical Science Professor 17 July 2011 Abstract In this paper, I will discuss the similarities and differences between heat, temperature, and the kinetic energy theory of matter. The purpose of this paper is to discuss how the study of heat relates to the kinetic energy theory of matter. It will also discuss what the study of heat is. I will then explain what temperature is. I will follow this by then explaining what the relationship between both heat and temperature are. Next, I will give the difference in both heat and temperature. I will then give examples of the various properties of a substance that will determine its heat capacity. Lastly, I will give the various sources of heat. How does the study of heat relate to the kinetic theory of matter? The study of heat is explained through science. It is not a theory of sorts like kinetic theory of matter is. Heat is what makes kinetic energy. The more heat that is produced the higher the kinetic energy level of an object or substance is or has. The kinetic energy theory of matter is a scientific theory that states that matter consists of small particles in a rapid random motion. The kinetic energy theory gives the differences of three states of matter; solids, liquids, and gases. The result of heat in these three states of matter has different effects on each. For instance, if you gave the same amount of heat off for all......

Words: 766 - Pages: 4

#### Heat and Temperature

...head: Study Of Heat Heat and Temperature Marcus A. Bullock SCI 110 Intro to Physical Science The Study Of Heat and Temperature Heat is a function of the velocity of all the molecules of a substance. Kinetic theory and heat transfer are both in motion, in Kinetic theory all states of matter are in vigorous motion and heat transfer is associated with the motion of atoms or molecules. The kinetic theory of matter says that all matter is made of particles that are in constant motion. Matter is made of constantly moving particles, which tells us how the matter in solids, liquids, and gases behaves. The reason heat relates to the kinetic theory is because, gases consist of great numbers of molecules moving in all directions, that their impact on a surface causes the gas pressure to rise. Heat study is explained through the movement of warmer and cooler objects, the changing of temperature. It is not a theory of sorts like kinetic theory of matter is. Scientist state that heat is defined as “something” that moves between objects when two objects of different temperatures are brought together. The more heat that is produced the higher the kinetic energy level of an object or substance it has. Temperature on the other hand, can be defined as the degree of hotness or coldness of an object. Temperature is the measure of the average heat or thermal energy of particles in a substance. The relationship between heat and temperature is described as...

Words: 749 - Pages: 3

#### Heat and Temperature

...Introduction to Heat and Temperature Gonzalo Leon Strayer University 2012/01/27 Introduction to Heat and Temperature Relation between the Study of Heat and Kinetic Theory Kinetic theory can be describes as a scientific theory of the movement of an object. Kinetic theory relates to capacity of a subject to do work on another object due to their motion. Kinetic theory of matter explains that the same is compose of tiny pieces of, atoms or molecules in continues motion. The theory states that the actions of matter inside an object and the actions heat generates. Kinetic theory explains as well the temperature transition by the means of transmission, where thermal powers shows to be conducted throughout matter, heating up cooler regions. This reaction is the delivery of heat or heat flow. Kinetic theory relates to the study of heat due to the fact that once heat is produced, kinetic energy is created as well. Heat energy can convert or transfer its self into kinetic energy that could make a subject move. Definition of Heat and Temperature Heat: Heat could simply be summarize as been energy. It is the delivery of Kinetic energy from one subject to a different one. Heat is conveyed in three different ways: radiation, convection and conduction. An example of heat by radiation could be infrared energy when this one strikes a surface. Heat by conduction occurs when two subjects are in direct contract with one another. Heat by convection can occur as the movement of a......

Words: 905 - Pages: 4

#### Heat

...Running head: HEAT 1 Heat Adrienne Branch Professor Olivia Uitto Science 110- Introduction to Physical Science April 27, 2012 HEAT 2 How does the study of heat relate to the kinetic theory of matter? The philosophers Democritus and Lucretius stated that matter is composed of particles. They also believed that these particles were in constant motion and in the state of solid, liquid, or gas (Gibbs, 2010). They called this theory the Kinetic Theory of Matter after the word kinema, which is Greek (Gibbs, 2010). In the study of heat we learn that whenever heat is added to a substance, molecules and atoms vibrate faster. Due to the quickly vibrating atoms, the area between the atoms get larger (“Atoms and Molecules”, n.d.). The state of the matter of the particular substance is determined by the motion and space between the particles. The more an object expands, the more space it takes up (“Atoms and Molecules”, n.d.). During this process, the mass of the particular object will not change. Solids, liquids, and gas all expand when heat is added. When an object cools, molecules vibrate at a slower pace. The atoms start moving closer together again and the matter begins to contract. During this process as well, the mass will remain the same (“Atoms and Molecules”, n.d.). Several good examples of the Kinetic Theory of Matter relating to heat is with sidewalks and railroad tracks which are solids. They......

Words: 1100 - Pages: 5

#### Heat

...“How does the study of heat relate to the Kinetic of matter?” Heat is transferred into motion. This is done by kinetic matter. It moves at a rapid motion, making the heat that’s being transferred combine with the motion of atom and molecules. Therefore, matter takes on changes when heat is constantly being applied. For this reason, the process is called the kinetic theory. Heat takes on 3 stages and they are solid, liquids and gases. Solids forms there shape by arrangements of molecules. For example, ice has a shape but, changes when melting. Solids form around a fixed close position fitting making it stronger and Causing solids to maintain its shape. Liquids are closer together but, will change its form because space is provided. Gases are higher and 10 times the distance between that of solids and liquids. Therefore, allowing the particles to move freely and use the space available to them. “What is heat?” Heat can be describing that something that move between object when 2 objects of different temperature are brought together or energy transfer that move between object of different temperature (energy transfer). For example, when you rub your hand together, then you will feel the heat (warm) in center of your hand. There are two kind of energy. It’s call “External energy” and “Internal energy”. External energy is define as the total potential and kinetic energy of an everyday-sized object. Internal energy is the total kinetic and potential......

Words: 923 - Pages: 4