# Welcome and Introductions Introduction activity: Goals/ Outcomes Agenda: -Welcome-Reflection on Variables -Assessment prototype -Investigation 3: 3 parts.

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Welcome and Introductions Introduction activity: Goals/ Outcomes Agenda: -Welcome-Reflection on Variables -Assessment prototype -Investigation 3: 3 parts -Investigation 4: 2 parts -Investigation 5: 3 parts

Weather and Water Investigation #3 Seasons and Sun PART 1: HOW MUCH SUNSHINE?

Quick Write – What causes seasons? Focus on Sunshine – I’ve heard it said that Dec 21 st is the shortest day of the year. Why would someone say that? Is there a longest day of the year? Calculating Hours of Sunlight for Your Location – Using the information we just discussed, as a team predict how many hours of sunlight we will have today? Explain your estimate. – Given the sunrise and sunset times, develop a strategy to calculate daylight hours – Discuss an example Graph and Analyze Daylight Hours for Berkeley – Bar vs. Line Reading – Wendy and Her Worldwide Weather Watchers, pre/post questions

Weather and Water Investigation #3 Seasons and Sun PART 2: SUN-EARTH SYSTEM

Discussion Questions – Transparency 3 Sun-Earth Model – Revolve, Rotation, North Star, Hours of Daylight, Equinox, Solstices, Seasons, ellipse, tilt, perihelion, aphelion Reading – Seasons (diagram) Multimedia – Seasonal Changes (lab notebook pg 9) Assessment – Response Sheet-Seasons and Sun

Weather and Water Investigation #3 Seasons and Sun PART 3: SUN ANGLE AND SOLAR HEATING

Ask – What kind of weather do you associate with summer? What is it about summer that makes it hotter? What happens to produce more heat? Beam Spreading – Flashlight Circles, Beam Spreading (lab notebook pg 13, Globe demonstration Assess Progress – Mid-summative Exam 3 Self-Assessment – Quick Write (part 1), Seasons and Sun (part 2), Mid- summative assessment – Review and discuss how their thinking has changed and what they did in class to change their thinking

Weather and Water Investigation #4 Heat Transfer PART 1: HEATING THE EARTH

Ask – Do you think the surface of the earth affects how hot the air gets? What is an earth material? Earth Materials Investigation – Set up the earth materials, discuss predictions (#1-4 temperature questions) – Collect data, graph data (within the axes!) – Revise thinking, discuss (#5,6 temperature questions) – Radiation, Differential Heating Multimedia – Heat and Energy Animation Reading – Thermometer: A Device to Measure Temperature, pre/post question

Weather and Water Investigation #4 Heat Transfer Part 2: CONDUCTION

Ask: – Why do your feet feel hot on a sidewalk on a hot day? Energy Transfer Challenge – Inquiry vs. Semi-guided – How did heat transfer from the hot water to the cold water? Explain Conduction/Multimedia – Record notes in lab notebook pg 17 (Heat Conduction) Discuss series of Energy Transfers – White board flow chart Ask: – Did you every reach for a metal spoon that was in a pot of cooking soup? How did the handle get hot when it hasn’t been in the soup or fire? Conduction Investigation Bowtie Pasta Video Reading – Heating the Atmosphere, questions following Assess – Mid-summative Exam 4

Weather and Water Investigation #5 Convection PART 1: DENSITY OF FLUIDS

Density demonstration bottles – Why do the liquids behave this way? Layering Inquiry – I have 4 liquids for you to investigate. The challenge is to layer all four liquids in a section of straw. – How is it that some salt solutions can be heavy and some light if they are made with the same materials? Which is heavier gold or feathers? – Foam and Beans Demo – If both cups are the same size, how can one be heavier? – Introduce density Determine density of the salt solutions Assess – Response Sheet - Convection Reading – Density, post reading questions

Weather and Water Investigation #5 Convection PART 2: CONVECTION IN WATER

Review methods of heat transfer – Light, radiant energy, visible light, UV, and infrared, conduction, warmer to cooler – Another method for liquids Water Inquiry – Challenge: Make layers with plain water of different temperatures – Make predictions in lab notebook – Successfully layer – Observe again after 5 minutes-Why did this happen? – Heat the bottom of the vial and explain what is happening Introduce Convection Reading – Convection, pre/post questions Assess – Collect Layering Hot and Cold Water Sheets

Weather and Water Investigation #5 Convection PART 3: CONVECTION IN AIR

Ask: – If the sun shines on a parking lot, and the blacktop absorbs some of the radiant energy, what might happen to the part of the atmosphere close to the parking lot? Convection Chamber Demonstration – Explain set-up and what it is attempting to model – Record observations – Convection Cell Multimedia – Convection animation Assess – Collect Convection Chamber sheet from the lab notebook Assess – Mid-summative Exam 5

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