Relate the Desert Cottontail to

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Presentation transcript:

Relate the Desert Cottontail to Relate the desert cottontail to a radiant heating system. Explain adaptations to the environment (why fur in a desert?, what about its ears?)

Comparison Desert Fort Thomas ? ? Temperature Day/Night Temp. Variation Humidity Sun vs. Clouds Precipitation ? ?

Wind Chill Article What are we surrounded by? What causes wind chill?

Wind Chill Article Make a prediction: what will happen to the temperature of the stainless steel temperature probe when placed in front of the fan. A = no change B = increase C = decrease Why doesn’t the stainless steel temp probe decrease in temperature when in front of the blowing fan?

Dry Ice Burn What causes your skin to burn even though your skin becomes cooler? What causes the sense of burning?

Read Chilling Effects, use highlighter to note importance What is the point of the article? What happened to Eric? At which skin temperature does frostbite begin? What causes frostbite? How does frostbite damage your skin? Is it a good idea to put snow on frostbitten skin? What is the best treatment for frostbite?

What causes frostbite? Water in your cells freeze. Ice crystals pierce through the cell membranes and walls Small blood-carrying vessels called capillaries freeze. Pain and then numbing Warm blood supply cannot pass through frozen capillaries, promotes more extensive freezing. Cells damage, flesh dies and blacken

Stages of Frostbite

Frostbite related to Heating How is the condition of frostbite similar to shutting off the water from the furnace to the radiator in a room?

Trapped air makes a good insulator