Welcome and Introductions

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# Welcome and Introductions - PowerPoint PPT Presentation

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.

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Presentation Transcript

### 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 WaterInvestigation #3Seasons and Sun

PART 1: HOW MUCH SUNSHINE?

Quick Write

• What causes seasons?
• Focus on Sunshine
• I’ve heard it said that Dec 21st 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
• Wendy and Her Worldwide Weather Watchers, pre/post questions

### Weather and WaterInvestigation #3Seasons 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
• Seasons (diagram)
• Multimedia
• Seasonal Changes (lab notebook pg 9)
• Assessment
• Response Sheet-Seasons and Sun

### Weather and WaterInvestigation #3Seasons and Sun

PART 3: SUN ANGLE AND SOLAR HEATING

• What kind of weather do you associate with summer? What is it about summer that makes it hotter? What happens to produce more heat?
• 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 WaterInvestigation #4Heat Transfer

PART 1: HEATING THE EARTH

• 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)
• Multimedia
• Heat and Energy Animation
• Thermometer: A Device to Measure Temperature, pre/post question

### Weather and WaterInvestigation #4Heat Transfer

Part 2: CONDUCTION

• 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
• 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
• Heating the Atmosphere, questions following
• Assess
• Mid-summative Exam 4

### Weather and WaterInvestigation #5Convection

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

### Weather and WaterInvestigation #5Convection

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
• Convection, pre/post questions
• Assess
• Collect Layering Hot and Cold Water Sheets

### Weather and WaterInvestigation #5Convection

PART 3: CONVECTION IN AIR