WEDNESDAY 11.9.16STANDARD: 6.P.3.1

Understand characteristics of energy transfer and interactions of matter and energy.

● I can classify energy into different forms.● I can define heat and temperature.

● I can describe how heat energy is transferred from warmer objects to cooler objects.

Thursday 11/10/2016STANDARD: 6.P.3.1

Understand characteristics of energy transfer and interactions of matter and energy.

● I can classify energy into different forms.● I can define heat and temperature.

● I can describe how heat energy is transferred from warmer objects to cooler objects.

Bell Ringer 11/9/16On a loose sheet of paper1. Label your paper2. Answer the following question, based on your

notes.3. What is the formula?

a. To find Massb. To Find Densityc. To Find Volume

4. What are the units for each?

Bell Ringer 11.10.16Go to the table and pick up the following

assignments. Warm-up: Reading activity/ Density worksheet

Complete both sidesQuiz Review

Bell Ringer 11.14.16Take 5 minutes to look over your review.

1. Grab the chrome book that matches your assigned seat.

2. Enter the code into your web browser3. When the timer starts begin your quiz:

4. http://online.testroom.com/34960PDG5. When you’re finished take out your

vocabulary notebook.6. Use discovery ed to find the remaining

definitions.

In your interactive notebook, copy down the following: please make sure you label, and date the page.

Title: Energy Acronym

MechanicalElectrical LightThermalSound

Understanding Heat Transfer:

Conduction, Convection and

Radiation

What is Heat?This is the movement of thermal

energy from a substance at a higher temperature to another at a

lower temperature.

Heat vs. Temperature

Heat is the actual energy…

Temperature is the measure of average kinetic energy of particles in a

substance.

Heat is NOT Temperature

Bell Ringer 11/15/20161. Find your seat number from yesterday!2. Grab a warm-up slip off the table3. Glue the slip in your interactive notebook. 4. Label the page (How Energy Changes)5. Glue the warm-up slip into your interactive

notebooka. Make sure you make record of this in your Table of

Contents6. As you read, make note of the highlighted, and bold

points in the article in your interactive notebook7. Then, Answer the questions in your notebook

DON’T FORGET TO PUT TODAY’S DATE ON THE PAGE!

How Energy ChangesEnergy always exists. The law of conservation of energy states that energy cannot be destroyed or created, but it can change form. Energy that changes form is transformed.

Sound energy can transform into mechanical energy. Thermal energy can change into chemical energy when a cake is baked. Chemical energy is changed into mechanical energy when food is eaten and gives power to muscles.

Energy does not stay in one place. It is transferred from one object to another by work. When a bowling ball hits a pin, the energy is transferred from the ball to the pin

Heat Transfer● Heat always moves from a warmer place to a

cooler place.

● Hot objects in a cooler room will cool to room temperature.

● Cold objects in a warmer room will heat up to room temperature.

Heat Transfer Methods●Heat transfers in three ways:

●Conduction●Convection●Radiation

Conduction Conduction heat transfer is the flowing of heat

energy from a high-temperature object to a lower-temperature object.

Conduction

When you heat a metal strip at one end, the heat travels to the other end.

As you heat the metal, the particles vibrate, these vibrations make the adjacent particles vibrate, and so on and so on, the vibrations are passed along the metal and so is the heat. We call this? Conduction

Metals are different

The outer e______ of metal atoms drift, and are free to move.

When the metal is heated, this ‘sea of electrons’ gain k_____ energy and transfer it throughout the metal.

Insulators, such as w___ and p____, do not have this ‘sea of electrons’ which is why they do not conduct heat as well as metals.

lectrons

inetic

ood lastic

Why does metal feel colder than wood, if they are both at the same temperature?

Metal is a conductor, wood is an insulator. Metal conducts the heat away from your hands. Wood does not conduct the heat away from your hands as well as the metal, so the wood feels warmer than the metal.

ConvectionConvection takes place when heated molecules move from one place to another, taking the heat

with them. Convection is common in both the atmosphere, as well as in the oceans.

Convection is the primary way that heat moves through gases and liquids.

Convection

ConvectionWhat happens to the particles in a liquid or a gas when you heat them?

The particles spread out and become less dense.

Cold air sinks

Where is the freezer

compartment put in a fridge?

Freezer compartment

It is put at the top, because cool air sinks, so it cools the

food on the way down.

It is warmer at the

bottom, so this warmer air rises and a convection current is

set up.

Radiation

The third method of heat transferHow does heat energy get from the Sun to the Earth? There are no particles

between the Sun and the Earth so it CANNOT travel by conduction or by convection.

?RADIATION

Radiation ● The transfer of energy by electromagnetic waves.

Examples:

● Sun● Fire● Light bulb

Radiation question

Why are houses painted white in hot countries?

White reflects heat radiation and keeps the house cooler.

1. Which of the following is not a method of heat transfer?

A.RadiationB.InsulationC.Conduction

D.Convection

2. In which of the following are the particles closest together?

A.SolidB.LiquidC.Gas

D.Fluid

3. How does heat energy reach the Earth from the Sun?

A.RadiationB.ConductionC.Convection

D.Insulation

4. Which is the best surface for reflecting heat radiation?

A.Shiny whiteB.Dull whiteC.Shiny black

D.Dull black

5. Which is the best surface for absorbing heat radiation?

A.Shiny whiteB.Dull whiteC.Shiny black

D.Dull black