What is Heat 6-1

Do Now What was the best part of your spring break? What is one thing you want to accomplish in class this week? What do you think heat is? Describe one way that heat can be transferred from one substance to another?

Objective I can explain the differences between 3 types of heat transfer - convection, conduction, and radiation – in writing using an exit ticket.

Agenda Do Now, objective BrainPop Video Types of Heat Transfer Investigation Convection Demo Exit Ticket

Homework None

What is Heat BrainPop What is Heat? Video As you watch, write down your own definitions for the following words: Heat Temperature

What do you think? Answer each question using your plicker How do molecules at warm temperatures differ from molecules at cool temperatures? At warm temperatures, molecules move around more At warm temperatures, molecules grow in size At warm temperatures, molecules exchange electrons more easily At warm temperatures, molecules combine with each other more easily

What do you think? What is the difference between heat and temperature? Temperature measures the motion of molecules, and heat is the energy of that motion Temperature is measured by a thermometer, and heat is measured by a barometer Heat is measured in calories, and temperature is measured in joules Heat is caused by the sun, and temperature is caused by conditions in the atmosphere

What do you think? If you turn on a radiator, heat will diffuse throughout the room. What does this mean? The temperature will become unbearably hot The heated molecules will cool down The heat will be concentrated in one area of the room The heat will spread out

Types of Heat Transfer Lab Today you will be conducting a mini-lab in which you explore two types of heat transfer Conduction radiation

Types of Heat Transfer Lab In this investigation you are expected to Answer all questions on your lab sheet Complete both parts of the investigation Contribute to your groups understanding of heat transfer

Convection Demonstration Watch as convection is shown in water. What happens when the hot water is placed in the cold water? What happens to the food coloring when ice is added? How is heat being transferred throughout the water?

Types of Heat Transfer: Conduction Conduction: the transfer of heat energy from particle to particle between substances through contact or within a substance. Examples: touching a hot frying pan

Types of Heat Transfer: Radiation Radiation (of heat): transfer of heat energy by emission of electromagnetic radiation in all directions. Examples: heat energy radiates from the sun to earth

Types of Heat Transfer: Convection Convection: the transfer of heat through the movement of air or liquid currents. Examples: convection currents in hot water on a stove

Exit Ticket Silently complete your exit ticket. When you are finished, turn it into Ms. Bergman.

Day 2

Do Now What are the three types of heat transfer that you learned about in the last class? Draw a picture to show how each type of heat transfer works.

Objective I can explain the differences between 3 types of heat transfer - convection, conduction, and radiation – in writing using an exit ticket.

Agenda Do Now, objective – 10 min Heat Guided Reading – 20 min Plicker Questions – 10 min Vocabulary – 10 min Weekly Quiz – 10 min Switch Energy Documentary – 30 min

What is Heat: Guided Reading As you read about heat, answer the guided questions on a separate sheet of paper using complete sentences.

Plicker Questions The transfer of heat energy by the motion of a heated liquid or a gas is? Convection Conduction Radiation heat

Plicker Questions The transfer of heat energy between particles in a solid is____________ Convection Conduction Radiation heat

Plicker Questions The transfer of heat energy from a substance through empty space is ________________ Convection Conduction Radiation heat

Plicker Questions How are the particles of objects affected when their heat energy is increased? The particles grow in size The particles vibrate more quickly The particles move farther apart from one another The particles shrink

Plicker Questions The temperature of a sample of pudding is a measure of the _________ of the particles that make up the pudding Activation energy Potential energy Kinetic energy Ionization energy

Plicker Questions As ice cools from 273 K to 263 K, the kinetic energy of its molecules will decrease increase Remain the same

Vocabulary Heat: is a form of energy that results from the motion of atoms and molecules. Measured in Joules (J) 1000 J = 1 kJ Heat energy always evens out (heat transfers from warm objects to cool objects). Temperature: a measure of the average kinetic energy molecules have, or how fast they are moving. Thermal Conductivity: the ability of an object to move heat energy from one part of itself to another.

Vocabulary Calorie: the amount of heat energy required to raise the temperature of 1 g of water 1ºC.

Plicker Question Solid X is placed in contact with solid Y. Heat energy will flow spontaneously from X to Y when X is 20ºC and Y is 20ºC X is 10ºC and Y is 5ºC X is -25ºC and Y is -10ºC X is 25ºC and Y is 30ºC

Weekly Quiz Answer the questions on your weekly quiz silently. When you are finished, turn it in.

Switch Documentary This unit is all about heat and energy. The energy industry is one of the largest in the world. This documentary looks at how the energy industry works, and how the world can move towards using renewable energy that doesn’t rely on burning fossil fuels which put CO2 into the atmosphere contributing to global warming.