Trivia Question of the DayTrivia Question of the Day

Unit 3: Insolation and the Unit 3: Insolation and the SeasonsSeasons

Topics to be Covered Include…Topics to be Covered Include…

Energy Transfer ProcessesEnergy Transfer Processes Transfer of Energy in Earth’s AtmosphereTransfer of Energy in Earth’s Atmosphere Layers of the AtmosphereLayers of the Atmosphere Greenhouse EffectGreenhouse Effect Angle of Insolation (Latitude)Angle of Insolation (Latitude) SeasonsSeasons

KWHLKWHL

Let’s Brainstorm…Let’s Brainstorm… Despite the ads, what causes M&M’s to melt in Despite the ads, what causes M&M’s to melt in

your hands??your hands??

How does it feel to walk barefoot on pavement on How does it feel to walk barefoot on pavement on a hot, sunny day?a hot, sunny day?

Why can sitting near a fire warm us?Why can sitting near a fire warm us?

Any other examples?Any other examples?

Heat Transfer ScenesHeat Transfer ScenesActivityActivity

Bill Nye Time!Bill Nye Time!

Bill Nye Video 1 

Bill Nye Video 2

Bill Nye Video 3

Trivia Question of the DayTrivia Question of the Day

Heat Transfer ProcessesHeat Transfer ProcessesStations ActivityStations Activity

Complete each of the 3 stations, including Complete each of the 3 stations, including answering all of the questions, to receive full answering all of the questions, to receive full credit!credit!

Challenge QuestionsChallenge Questions

Which two types of heat transfer processes Which two types of heat transfer processes require matter to travel through?require matter to travel through?

Conduction, ConvectionConduction, Convection

Which heat transfer process is the only one Which heat transfer process is the only one that does NOT require matter to travel that does NOT require matter to travel through?through?

RadiationRadiation

Lesson 2: Lesson 2: Energy TransformationsEnergy Transformations

3 States (Phases) of Matter3 States (Phases) of Matter exist… What are they? exist… What are they?SolidSolid

LiquidLiquid

GasGas

State (Phase) changes of matter State (Phase) changes of matter CANCAN occur when occur when changing the amount of heat added to or taken away changing the amount of heat added to or taken away from an object from an object

Challenge Question

If we add or take away heat energy, will a phase change ALWAYS occur?

NO!But Why?

Specific Heat: The energy needed to raise the temperature of

1kg of a substance by 1°C, without changing its state (phase) of matter

ESRT, p. 1

Now, let’s get back to phase changes…

We have special names for the heat needed to have phase changes… Latent Heat: Energy needed to change a substance

from one physical state to another Latent Heat of Fusion: Energy needed to

change a substance from a solid to a liquid Latent Heat of Vaporization: Energy needed to

change a substance from a liquid to a gas

When adding (absorbing) heat…

1. Temperature of the solid rises until reaching the melting point

2. When melting begins, all heat absorbed is used to melt the solid WITHOUT any temperature change (latent heat of fusion)

3. When solid is completely melted, heat absorbed raises the temperature until reaching the boiling point

4. When boiling begins, all heat absorbed is used to vaporize the liquid WITHOUT any temperature change (latent heat of vaporization)

When taking away (releasing) heat…

1. Temperature of the gas cools until reaching the boiling point

2. The gas condenses to a liquid and all heat is released WITHOUT any temperature change (latent heat of vaporization is released)

3. When the gas is completely a liquid, heat released cools the temperature until reaching the freezing point

4. The liquid becomes a solid and all heat is released WITHOUT any temperature change (latent heat of fusion is released)

Challenge Questions Is latent heat absorbed or released when changing

from…Liquid to Vapor (Gas)?

Absorbed

Vapor (Gas) to Liquid? Released

Liquid to Solid? Released

Solid to Liquid? Absorbed

Energy TransformationsEssential Vocabulary Activity

Using the provided vocabulary words, definitions, construction paper, colored pencils/markers, scissors, and glue, create “brain-friendly” index cards that include

Side 1: The word

Side 2. The definition on the right AND

a drawing or visual example on the left