HEAT: Convection & Conduction. Convection – Interconnections pg. 167 Conduction – Interconnections pg. 163 Heat Stations Conductors and Insulators Lab. Microorganisms. Microorganisms – Interconnections pg. 15 Microbes – Interconnections pg. 25. CONVECTION. Objectives and Indicators
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Convection – Interconnections pg. 167
Conduction – Interconnections pg. 163
Conductors and Insulators Lab
Objectives and Indicators
Last night it was so hot in my upstairs bedroom that I couldn’t sleep. I grabbed my pillow and went to sleep in the basement. Finally, I could fall asleep. I wondered, why is it cooler in the basement on a hot day?
Pencil Shavings in Water
Why do the pencil shavings travel in a circle?
How is heat transferring in this demonstration?
Convection is the transfer of heat in gases and liquids. Hot gases and liquids rise, while cooler gases and liquids will sink.
1. Use 3 Styrofoam cups, turned upside down to hold your clear plastic tray.
Why did the food coloring rise?
Why did the food coloring start to sink when it reached the top of the water?
Objectives and Indicators
Observations of warm water and ice
Melting Ice Challenge
Class discussion. Which method melted the most ice?
Discuss insulation, or why you wear a winter coat.
Introduce the terms: conductor and insulator.
Eureka – Conductors and student conclusions
What would happen if you used ice water instead of hot water?
What are the needs of living thing? What are microorganisms?
How do microorganisms meet their needs? In which environments do microorganisms thrive?
How are microorganisms helpful? How are they harmful?
Pulling It All Together:
Whathave famous experiments taught us about microorganisms?
How can I design and conduct an investigation to determine a microorganism’s ideal environment?
5 – Place the slide on the stage and view it first with the red-banded objective. Once you see the image, you can rotate the nosepiece to view the slide with the different objectives.
You do not need to use the stage clips when viewing wet-mount slides!
How to make a wet-mount slide …
1 – Get a clean slide and coverslip from your teacher.
2 – Place ONE drop of water in the middle of the slide. Don’t use too much or the water will run off the edge and make a mess!
3 – Place the edge of the cover slip on one side of the water drop.