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Unit 2: Heat Chapter 4: Temperature describes how hot or cold an object is.
How does temperature affect your daily life? Why do you feel warm playing outside on a cold winter’s day?
Place one hand in cold water, one hand in “hot” water for 1 minute. Then at the same time put both hands in the luke warm water. Describe what each hand feels.
How hot or cold something is
The human body
Boiling point of water Freezing Point of water
Comfortable room temperature
1. Galileo’s Air Thermoscope: As the air heats, the liquids drops and rises when air is cooled. Early Thermoscopes...
2. Early Liquid Thermometer: Liquid rising up the tube shows the temperature is rising.
Activity 4-1A “Building a Thermoscope” Page 121
Scales are necessary for temperatures to be accurate and comparable.
3 commonly used scales are: 1. Fahrenheit 2. Celsius 3. Kelvin
Developed by Daniel Fahrenheit The first to be widely used
Developed by Anders Celsius. Based on the freezing and boiling points of water.
Developed by William Thomson (Lord Kelvin) Scale starts that the coldest temperature possible – absolute zero (-273 ˚ C)
1. The Liquid-in-glass Thermometer The lab thermometer contains colored alcohol rather than mercury for safety.
2. The Thermocouple Made of two wires of different metals. A temperature difference causes a current to flow through the wires. This current is measured by a meter.
Can measure higher temperatures than typical thermometers.
3. The Resistance Thermometer (digital thermometers)
4. Bimetallic Strip (thermostat) Made of two different metals fused together. These metals expand and contract at different rates causing the strip to bend when heated.
Heating and Cooling a Bimetallic Strip
5. Infrared Thermometer (thermogram) Converts infrared radiation into colors that can interpret a temperature difference.
Can be used to measure heat loss in your home
Heat A Form of Energy Molecules and Motion The motion of molecules produces heat The more motion, the more heat is generated.
Heat A Form of Energy Molecules and Motion The motion of atoms or molecules is called thermal energy. The more motion, the more energy.
Heat Chapter 9 Thermal Energy. Kinetic and Potential Energy Kinetic energy- energy of motion potential energy – Is the certain amount of energy that Molecules.
Chapter Temperature. Outline I. Particle MotionParticle Motion A. Review II. TemperatureTemperature A. Definition III. ThermometersThermometers.
Chapter 10 Heat and Temperature. Temperature How hot or cold something is. How hot or cold something is. What make something hot? What make something.
Place the 2 groups of objects below in order from coldest to hottest. 1. Cheese, popsicle, napkin 2.Bonfire, napkin, fried egg What do you think?
Temperature and States of Matter. Measuring Temperature Using States Of Matter Solids can turn into liquids, and liquids can turn into gasses and back.
HEAT 3 RD Grade Science Chapter 4. Essential Questions What is heat and how is it measured? How does thermal energy move? How is thermal energy used?
Temperature in Thermal Systems. Vocabulary Pg (leave a space between words) Heat energy Heat energy Temperature difference Temperature difference.
Thermal Energy Temperature and Thermal Energy Chapter 15.
Heat Energy Mr. Skirbst Physical Science Topic 08.
Ch 21 Temperature, Heat, and Expansion. Temperature A measure of the average kinetic energy of the particles in a substance.
Temperature and thermal equilibrium Hot Cold. Thermometer.
States of matter and thermodynamics. Solid Does not flow. Definite shape. Definite volume.
Intro Energy. Explain that physical and chemical changes in matter involve transfers of energy. Apply the law of conservation of energy to analyze changes.
Unit 6 Heat. What is heat? heat – form of energy in moving particles of matter.
AIR CONDITIONERS AND HEATERS CHAPTER 6.3. HVAC GENERAL FACTS In most homes, we use an HVAC system to heat and cool the air. HVAC stands for Heating, Ventilation,
Chapter: Thermal Energy Table of Contents Section 3: Engines and RefrigeratorsEngines and Refrigerators Section 1: Temperature and Thermal Energy Section.
Ch. 5 - Energy II. Thermal Energy (p , ) Temperature Thermal Energy Heat Transfer.
HEAT. What do you think this photograph shows? ENERGY of HEAT It takes heat to shape glass or to make a cup of tea.
21 Temperature, Heat, and Expansion When matter gets warmer, the atoms or molecules in the matter move faster.
Applied Physics Chap 51 Chapter 5: Temperature and Thermal Energy.
2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Why are you So Heated Stick a Fork.
Keeping Warm Year 4 Lesson 1 L.O To know that touch is not an accurate way of judging temperature.
Brownian Motion How does this prove that atoms exist?
Copyright © 2014 Delmar, Cengage Learning Thermodynamics Instructor Name: (Your Name) 3 CHAPTER.
Chapter 6: Thermal Energy RECALL: Temperature is a measure of the average kinetic energy of the particles in the object. As temperature increases, the.
Ch. 6 – Thermal Energy I. Temperature and Energy Transfer (p. 158 – 170) Temperature Thermal Energy Heat Transfer.
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