Looking for a Tutor Near You?

Post Learning Requirement »
x

Choose Country Code

x

Direction

x

Ask a Question

x

x
x
For better view click here
x
Hire a Tutor
DISCOVER

Thermal Physics

Loading...

Published in: Physics
4,889 Views

This Unit is divided into three sub - subjects: TEMPERATURE HEAT THERMODYNAMICS We shall devote our Unit 1 to an investigation of the theory that “Matter is made up of atoms and that these atoms are in continuous random motion”. This theory is called the KINETIC THEORY. We will also discuss the concept of temperature and how it is measured, as well as the experimentally measured properties of gases which serve foundation for the kinetic theory.

Himanshu J / Mumbai

6 years of teaching experience

Qualification: BE. Electronics and Telecommunication

Teaches: Physics

Contact this Tutor
  1. Thermal Physics Unit 1 Thermal Concepts Agenda: 1 . The particle model of matter 2. Temperature 3. Measuring Temperature 4. Heat 5.Change of phase 6. The method of mixtures
  2. Prerequisite PriorKnowledgeHandout.doc Time: 10 Minutes
  3. Reflect upon....and let's begin Discuss your knowledge as to what makes a hot air balloon rise upward.
  4. ectives: Temperature and Kinetic Theory This Unit is divided into three sub - subjects: TEMPERATURE HEAT THERMODYNAMICS We shall devote our Unit 1 to an investigation of the theory that "Matter is made up of atoms and that these atoms are in continuous random motion". This theory is called the KINETIC THEORY. We will also discuss the concept of temperature and how it is measured, as well as the experimentally measured properties of gases which serve foundation for the kinetic theory.
  5. Atomic Theory of Matter Greek Philosopher :- Democritus Example: Iron Atom - ----- Indivisible* Today his Atomic Theory is accepted , however, experimental evidences came mainly in the 1 8th, 19th and 20th Century from the analysis of chemical reactions.
  6. Evidence for the Atomic Theory - BROWNIAN MOTION Scientist Robert Brown, 7872(Experimental Approach) http://labs.minutelabs.io/Brownian-Motion/ Scientist Albert Einstein, 7905 ( Theoretical Examination of Brownian Motion) Lead towards the approximate size and mass of atoms and molecules. - The diameter of a typical atom is about 10-10m
  7. What do you think? 7. How can the atoms or molecules of a brick or aluminium hold together in one piece? 7. How does matter occupy space?
  8. Distance between the atoms. : The density of copper is 8.9 x 103 kg/m3 , and each copper atom has a ESTIMATE mass of 63u. Estimate the average distance between neighbouring copper atoms. (1 u = 1.66 x 10 -27 kg) Approach We consider a cube of copper 1m on a side. From the given density we can calculate the mass of a 1 -m3 cube. We divide this by the mass of one atom to obtain the number of atoms in 1m3. Let N be the number of atoms -n-a-l— length; then NxNxN = N3 equals this total number of atoms in 1m3 Answer: 2.3 x 10-10m
  9. Assessment Time You will get 10 Minutes to complete Assessment 1. You are not allowed to use any mode of reference to content You are not allowed to use GDC. You are expected to present neat and tidy work.
  10. Temperature and Thermometers Temperature is a measure of how hot or cold something is. - Properties of matter change with temperature. Examples: What happens to the physical property of an iron beam if we heat it? Why are compressible spacers or expansion joints placed at regular intervals of concrete roads or sidewalks? What happens to the electrical resistance of matter ? Do you think matter or objects radiate colour(precisely tem eratures increases? If Yes discuss few exam le avel ngth) as
  11. Temperature and Thermometers Instruments designed to measure temperature are called THERMOMETERS. -Their operation depends on some property of matter that changes with temperature. - Most common thermometers rely on the expansion of a material with an increase in temperature.
  12. unit oc bulb FIXED END capillary tube COLD THIS NE TAC HAS THE GREATER COEFFICIENT OF LINEAR EXPAhStog HOT THIS HAS SKALLER COEFFICIENT OV EXPANSION Liquid in glass thermometer. The liquid expands more than the glass when the temperature is increased, so the liquid level rises in the tube. Bimetallic thermometer. This thermometer is made by bonding together two dissimilar metals whose rates of expansion are different. When the temperature is increased, the different amounts of expansion cause the bimetallic strip to bend. This kind of thermometer is used us oven thermometers, automatic off switches in electric coffee pots, and in room thermostats. To be noted: Very precise thermometers make use of electrical properties, such as resistance the mometers, thermocouples, thermistors often with a digital readout.
  13. Temperature Scales In order to measure temperature quantitatively , some sort of numerical scale must be defined. The most common scale today is the Celsius scale, sometimes also called the Centigrade scale In US, the Fahrenheit scale is also common. The most important scale in scientific work is the Absolute or Kelvin Scale.
  14. Relation between Celsius Scale and Fahrenheit Scale Every temperature on the Celsius scale corresponds to a particular temperature on the Fahrenheit scale. Remember, O oc = 32 OF and a change of 5 oc = 9 OF 32 | Q. Normal Body temperature is 98.6 OF. What is this on the Celsius scale? Q. Determine the temperature at which both the scales agree (T
  15. Assessment Time You will get 10 Minutes to complete Assessment 2. You are not allowed to use any mode of reference to content You are not allowed to use GDC. You are expected to present neat and tidy work.
  16. The Gas Laws and Absolute Temperature The volume of a gas depends on the pressure as well as temperature of the gas. It is therefore valuable to determine a relation between P, V, T and the mass of a gas. Such a relation is called Equation of state. (Note: By
  17. http://www.igcsephysics.com/content/topics/thermaI_physics/page98/pag e98_img1 .jpg , Slide 11 http://firecontrolman.tpub.com/141 04/img/14104_236_1 .jpg, Slide 12 2.

Need a Tutor or Coaching Class?

Post an enquiry and get instant responses from qualified and experienced tutors.

Post Requirement

Related PPTs

Upload PPTs

If you have your own PowerPoint Presentations which you think can benefit others, please upload on LearnPick. For each approved PPT you will get 100 Credit Points and 100 Activity Score which will increase your profile visibility.

Upload Now
Home > PowerPoint Slides > Thermal Physics