HEAT AND LIGHT
María José Rivas
Created on February 2, 2017
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THERMAL ENERGY
AND HEAT
Licencia de Creative Commons
INTRODUCTION
HEAT AND LIGHT
- Definition
Final Task
- You have to complete a mind map with an interactive application.
Examples: Popplet, Creately
- In groups you have to explain an experiment related to the topic of thermal energy.
Groups roles
Tasks
Outline
Presentation
Video
Share in Edmodo app
IMÁGENES OBTENIDAS DE PIXABAY CON LICENCIA CREATIVE COMMON CCO.
VIDEOS OBTENIDOSDE YOUTUBE CON LICENCIA YOUTUBE
VIDEOS DE CREACIÓN PROPIOS ALOJADOS EN YOUTUBE Y CON LICENCIA CREATIVE COMMON.
Autor: María José Rivas
Nombre de usuario del autor: María José Rivas
Fecha de publicación: 3/02/2017
Titulo del vídeo: Forms of energy_revision
URL: https://youtu.be/DAZGnIY4PuQ
Autor: María José Rivas
Nombre de usuario del autor: María José Rivas
Fecha de publicación: 2/02/2017
Titulo del vídeo: HEAT AND LIGHT
URL: https://youtu.be/Zwm3n2YqGpw
Autor: María José Rivas
Nombre de usuario del autor: María José Rivas
Fecha de publicación: 3/02/2017
Titulo del vídeo: Radiation
URL:https://youtu.be/w7BOmnCBu-4
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Nombre de usuario del autor: Science for Kids
Fecha de publicación: 23/03/2015
Titulo del vídeo: Heat Transfer by Conduction – Science For Kids
URL:https://youtu.be/DmnQD3eEkNk
Autor: Science for Kids
Nombre de usuario del autor: Science for Kids
Fecha de publicación: 05/04/2015
Titulo del vídeo: Heat Transfer by Convection – Science For Kids
URL:https://youtu.be/clIktVg_SSA
Autor: Science for Kids
Nombre de usuario del autor: Science for Kids
Fecha de publicación: 12/10/2014
Titulo del vídeo:Conductors and Insulators - Electricity - Science for kids
URL: https://youtu.be/qIF90dhqGPY
Autor: Science for Kids
Nombre de usuario del autor: Science for Kids
Fecha de publicación: 03/05/2015
Titulo del vídeo: Primary Connections Science - Run, Run, Runny - Melting Moments
URL:https://youtu.be/cG2ZRFVBQx8
Autor: Smartschoolonline
Nombre de usuario del autor: Smartschoolonline
Fecha de publicación: 17/12/2011
Titulo del vídeo: Evaporation and condensation
URL: https://youtu.be/SfzUBe7lp44
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Nombre de usuario del autor: PearsonMY
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Titulo del vídeo: Contraction and Expansion
URL: https://youtu.be/A6gpe61crdA
Autor: Crash Course Kids
Nombre de usuario del autor: Crash Course Kids
Fecha de publicación: 16/07/2015
Titulo del vídeo:Chemical Changes: Crash Course Kids #19.2
URL:https://youtu.be/37pir0ej_SE
PREVIOUS KNOWLEDGE
HOW DOES THERMAL ENERGY TRAVEL THROUGH OBJECTS?
Thermal energy always travels from a hotter object to a colder one.
Look at this pictures. Which spoon will get hotter?
Thermal energy travels through objects in three different ways. Let's investigate
WRONG ANSWER
THAT'S CORRECT.
The spoon in picture B will get hotter because the heat moves from the coffee to the cup and the spoon.
THERMAL ENERGY TRAVELS THROUGH OBJECTS IN THREE DIFFERENT WAYS:
CONVECTION
Do you want to learn more about CONDUCTOR and INSULATORS?
CONDUCTION
RADIATION
CHECK YOUR LEARNING.
WHAT ARE THE EFFECTS OF THE THERMAL ENERGY?
MELTING
EVAPORATION
EXPANSION
CHECK YOUR LEARNING.
CHEMICAL CHANGE
MELTING
When a solid receives thermal energy, it changes into a liquid. This process is called MELTING. As the molecules in the object receive thermal energy, they begin to move faster. They also move away from each other. The physical appearance of the object changes because the molecules are moving faster.
EVAPORATION
When thermal energy is applied to a liquid, it changes into a gas. This process is called EVAPORATION. As the liquid receives thermal energy, its molecules move faster than before, and they separate from each other. Finally, the liquid changes into a gas.
EXPANSION
Thermal energy causes the molecules in a solid, liquid or gas to vibrate.As a result, the material expands. Some materials expand faster than others, for example: gases expand faster than liquid or solids. Sometimes, when gases receive thermal energy, they expand very rapidly and cause explosions.
PLAY WITH PLICKER APP
CHEMICAL CHANGES
Thermal energy can cause chemical changes. When we cook food, the thermal energy of the oven causes permanent changes in the food. For example, when we make fairy cakes, we mix eggs, flour and sugar and get a thick liquid. Thermal energy changes this mixture into a solid fairy cake. This change can't be reversed: we can't change the fairy cakes back into eggs, flour and sugar again.