Monday March 8
In Class : Bird House Project
Big Question: How does building material, thickness, and color afect teh heat transfer in a bird house?
Design Constraints:
- Size - describe the size and shape of the given bird house in a 2D dimension drawing
- Location - where is your birdhouse located? What is average temperature over the course of a year? Click link
- Species - what is the weight and wing span of 4 native species of birds in your location? Click link
- Biology - how do birds keep themselves cool? what is the anatomy of your native bird species?
HWK : POW #9 (see week of March 1 blog for details)
Wednesday March 10
In Class : Bird House Project, dimension drawings, testing
HWK due : Report draft #1 typed and 2 dimensioned drawings on graph paper
Report draft #1 should include
- Problem Statement - restate the problem in your own words
- Background Research - what are the design constraints? where will the house by located? what is temperature in this location over a 12 month period? what types of birds will visit this habitat? What is the size, wingspan, and weight of these birds in metric units? How does a bird regulate its own body temperature?
- Design Ideas #1 - make a concept drawing of the roof design, labeling the materials and sizes
Thursday March 10
In Class : SQ3r p. 181 -185 from physics book.
Directions: Copy the problems below in your notebook on one side of the page. Read pages 181 to 185 in the physics book. Use the book to answer these questions in complete sentences and in your own words
- What are the 3 different ways heat flows? (p. 181)
- What is conduction? Give an example (p.181)
- How does conduction work? (p.181)
- When a cold spoon is placed in hot cocoa which direction does heat flow? Explain. (p.181)
- When a cold spoon is placed in hot cocoa and the temperature is allowed stabilize which direction does heat flow? Explain. (p.181)
- Which materials make the best conductors of heat solids, liquids, or gases? Give an example of each. (p.182)
- How are thermal conductors compare to thermal insulators? (p.182)
- What is the affect of a vacum on heat transfer?
- Describe the difference between natural and forced convection? (p.183)
- What is thermal radiation? (p.184)
- How does the amount of radiation absorbed by asphalt vary from the amount absorbed by a mirror? Explain. (p.184)
- How do living things transfer heat? (p.185)
- In which direction does heat flow between an ice cube and the air in a room?
- When our bird house is under a 250 Watt light bulb describe how heat is transferrred by radiation, convection and conduction.
- Then Do Practice Problems on p. 190 Section 7.4 problems #14 -15
Friday March 12
In Class : Çonduction, Convection and Radiation discussion
HWK due : Çonduction, Convection and Radiation Problem
- Directions: Answer the following question in complete sentences, using 1/2 page in your notebook.
A hot cup of tea is set on 3 types of boards: wood, steel, gold, and foam. Which of these materials are thermal insultators? Which of these materials are conductors? Explain how you know. Describe what you expect to observe once the hot cup of tea is removed? Which of these boards will take the longest to cool down after the tea is removed? State your reasoning and assumptions. Between which objects is conduction, convection, or radiation occurring?
Monday March 15
In Class : Bird House lab data
HWK due : 4 Çonduction, Convection and Radiation Problems below
- Describe 3 ways you could cook a hot dog using conduction, convection, and radiation.
- What happens to cold dye molecules that are dropped into hot water? What type of heat transfer does this action describe? Explain
- There are 3 boxes in a row next to one another. The first is at 20 C, the second at 30 C, and the third at 15 C. Which direction will heat flow between 3 boxes in this situation. Draw a picture to show your thinking.
- If you open the sun roof in a car which type(s) of heat transfer is able to warm the inside of the car on a warm sunny day. Explain.