Advances in Wind Power. A&E Television Networks. 2006
Learn360. 31 August 2012
http://www.learn360.com/ShowVideo.aspx?ID=350393
Humongous Wind Turbines. A&E Television Networks. 2002
Learn360. 31 August 2012
http://www.learn360.com/ShowVideo.aspx?ID=366420
http://www1.eere.energy.gov/education/pdfs/wind_turbinebladedesign.pdf
Friday, August 31, 2012
Wednesday, August 29, 2012
August 29
Collecting Solar Data
Today we will be using your solar house for data collection. It's about 12 pm. Please do the following.
Wrap a marshmallow in aluminum foil
Take an unwrapped marshmallow
Fill a cup with a set amount of water (60 ml)
Place a traditional thermometer in the bottom of the box.
Record the temperature of three of the four items using the Raytek quick thermometer.
Take the oven out and set in direct sunlight for 30 minutes. DO NOT OPEN THE LID. You may orient the window to directly align the sun (solar oven style) with the window, or to place the window facing a southern orientation (solar house style).
After 30 minutes, record the temperature of the three things using the Raytek and the temp of the traditional thermometer.
Calculate the change in temperature of each item set.
Additionally, make 20 observations about what you noticed happened with your house.
Video 1
Video 2
Today we will be using your solar house for data collection. It's about 12 pm. Please do the following.
Wrap a marshmallow in aluminum foil
Take an unwrapped marshmallow
Fill a cup with a set amount of water (60 ml)
Place a traditional thermometer in the bottom of the box.
Record the temperature of three of the four items using the Raytek quick thermometer.
Take the oven out and set in direct sunlight for 30 minutes. DO NOT OPEN THE LID. You may orient the window to directly align the sun (solar oven style) with the window, or to place the window facing a southern orientation (solar house style).
After 30 minutes, record the temperature of the three things using the Raytek and the temp of the traditional thermometer.
Calculate the change in temperature of each item set.
Additionally, make 20 observations about what you noticed happened with your house.
Video 1
Video 2
Thursday, August 23, 2012
Solar House
First 45 minutes:
Your job is to work on constructing your solar house that is roughly the size of 2 shoe boxes. It must contain the following.
A floor made of 12 x12 tile (on counter) for thermal mass. DO NOT break the tile.
A 4 in x 6 in (10 cm x 15 cm) open hole for a window (we will add window material on Monday)
At least 1 cm of insulation in the walls and appropriate roof insulation (remember, the R-value is about tripled)
A door that can open and close
A roof that can be taken off, or flipped open.
Your groups are as follows:
Group 1: Alex, Sam, Corey
Group 2: Cassidy, Deandre, Brian
Group 3: Jordan, Cassidy S, Michael
Group 4: Christina, Carlee, Sarah M.
Group 5: Kaylar, Kristen, Kaitlyn
Group 6: Clayton, Sarah D., Blake
Group 7: Bennett, Alex L, Max
At the end of 45 minutes, place your houses (they must have a name on them) ON the side counter by the second sink. Anything that is anywhere else in the room will be discarded by the janitor.
Second 45 minutes:
Go to your table. Work with one partner and a computer to complete the Personal Evaluation for the Week.
Your job is to work on constructing your solar house that is roughly the size of 2 shoe boxes. It must contain the following.
A floor made of 12 x12 tile (on counter) for thermal mass. DO NOT break the tile.
A 4 in x 6 in (10 cm x 15 cm) open hole for a window (we will add window material on Monday)
At least 1 cm of insulation in the walls and appropriate roof insulation (remember, the R-value is about tripled)
A door that can open and close
A roof that can be taken off, or flipped open.
Your groups are as follows:
Group 1: Alex, Sam, Corey
Group 2: Cassidy, Deandre, Brian
Group 3: Jordan, Cassidy S, Michael
Group 4: Christina, Carlee, Sarah M.
Group 5: Kaylar, Kristen, Kaitlyn
Group 6: Clayton, Sarah D., Blake
Group 7: Bennett, Alex L, Max
At the end of 45 minutes, place your houses (they must have a name on them) ON the side counter by the second sink. Anything that is anywhere else in the room will be discarded by the janitor.
Second 45 minutes:
Go to your table. Work with one partner and a computer to complete the Personal Evaluation for the Week.
Wednesday, August 22, 2012
Aug 22 and 23: R-Value
Home Insulation
Insulation in Iowa (take a look at this website)
Table of Common R-values
To calculate R-values, we make a sandwich of insulation material. Just because something is thicker doesn't necessarily mean it is better. Sometimes, though, higher R-value material is more expensive. It's a trade-off, just like many things in life.
Make the following sandwiches for your table on a piece of paper, big enough for the entire class to see.:
A sandwich with a R-value of 15 or better
A sandwich with a R-value of 50 or better
A sandwich with a maximum thickness of 6 inches
A sandwich with a maximum thickness of 12 inches
Also, when it comes to windows, we have a problem...It is going to be a very thin sandwich, unless we put up drapes (curtains) or some sort of a quilted batting at night. Even so, that part of the wall will be colder. The other trade-off is that windows that have bigger R-values have a bigger cost.
Based on this, what type of windows do you think your house should have?
Personal Evaluation (to be filled out in teams of two)
Tuesday, August 21, 2012
August 21 Passive Solar
I. Check out the pictures found at this passive solar website. Our goal here is to figure out WHAT role the sun has in what we are doing. Divvy up the pictures, and try to explain on a whiteboard what is going on.
II. Read pages 4-7 of the Infinite Power Reading. When you get done, you will need to compelete the worksheet and hand in.
III. Want to learn more? Take a look at solar water heat and photovoltaic (solar) cells.
II. Read pages 4-7 of the Infinite Power Reading. When you get done, you will need to compelete the worksheet and hand in.
III. Want to learn more? Take a look at solar water heat and photovoltaic (solar) cells.
Monday, August 20, 2012
Aug 20 Google Docs and Passive solar
I. We need to talk about sharing data.
One way we can share data is a shared worksheet
Another way is to share with everyone, but that starts to create a huge number of shared documents. How can we fix this? My thought: One person creates a document and shares it with everyone immediately. Everyone types on that shared document. Since we didn't do that Friday, we will need to do something else. Decide who has the MASTER Document. Open it, and rename it Sun Facts 1 (Table ___) Change the sharing settings to 'anyone with the link can edit). Copy all the information from your Friday work into the document. When you get done, everyone except the Master Document will be deleted.
II. Using your knowledge of passive solar energy, predict where you think a marshmallow would best be placed to make it warm and gooey using the sun. III. We will be going out in the front of the building. You will have a marshmallow and a piece of paper. At the end of the 15 minute period, we will check the temp with a Raytek gun. After that, you will need to decide how well your prediction matches your data (the temperature, and a gooeyness test)
III. Watch the video:
IV. How is your marshmallow experiment related to this video and the terms:
Passive solar energy
Thermal mass
Radiation
South Windows
Another way is to share with everyone, but that starts to create a huge number of shared documents. How can we fix this? My thought: One person creates a document and shares it with everyone immediately. Everyone types on that shared document. Since we didn't do that Friday, we will need to do something else. Decide who has the MASTER Document. Open it, and rename it Sun Facts 1 (Table ___) Change the sharing settings to 'anyone with the link can edit). Copy all the information from your Friday work into the document. When you get done, everyone except the Master Document will be deleted.
II. Using your knowledge of passive solar energy, predict where you think a marshmallow would best be placed to make it warm and gooey using the sun. III. We will be going out in the front of the building. You will have a marshmallow and a piece of paper. At the end of the 15 minute period, we will check the temp with a Raytek gun. After that, you will need to decide how well your prediction matches your data (the temperature, and a gooeyness test)
III. Watch the video:
IV. How is your marshmallow experiment related to this video and the terms:
Passive solar energy
Thermal mass
Radiation
South Windows
Friday, August 17, 2012
Aug 17 Sun Research
photo credit: Vijay Bandari - Moved to other account via photo pin cc
Today, we will be asking questions about the Sun.
Step 1: Open up your Google Doc about the Sun. SHARE this document with me and your teammates.
Step 2: Answer the following questions to the best of your knowledge. This will require you to SEARCH on Google. When you get the answer, write it down in ONE to TWO sentences, and then paste the URL in. IF you use a textbook, write down the page that you found the answer.
- How does the Sun make its heat?
- How does the heat travel to Earth?
- How far is it between the Sun and the Earth?
- Do we depend on the Sun? Why?
- What is passive solar energy?
- How does a solar cell work?
Step 3: Data collection. You will be collecting temperatures on at least 15 surfaces around the school grounds. You may NOT cross any streets, and will be sent out in teams with a cell phone. The first three are 1) a brick wall 30 cm (1 foot off the ground); 2) a brick wall 60 cm (2 foot off the ground) and 3) a brick wall
Organize it in a table with the headings: Surface/Height from the ground (m)/Temperature (degrees C)/Direct or Indirect Sunlight
Add this information to your Google Docs.
Step 4: Processing. We do this the last 15 minutes of class. Use your time wisely.
Aug 16 Intro
Welcome to Science Interactions! I'm so glad you're here.
Today's goals:
- Expectations
- Logging onto Google
- Your First Email
Ways to reach me:
Skype: marcia_powell
Cell: fivesixthree-six0eight-nineteenhundred
Email: marciapowellATw-delaware.k12.ia.us
Twitter: @mapowell
::mapowell::
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