What happens when a windmill's materials/design specifications are pushed beyond their limits

This is what happens when lightning strikes a windmill or the brakes fail?  At excessive speeds, the generator and blades can't handle the stress and kaboom!

Which of the following mechanical properties would you think are important for a windmill?

• hardness
• elasticity
• resilience
• ductility
• malleability
• stiffness
• resists corrosion
• conducts electricity
• conducts heat (thermal energy)

The Mother of All Science Resources

Hi All,

The Montreal and Laval School Boards got together and made this mega awesome resource.  Considering someone from inside these boards probably wrote the exam, you might consider taking a look.  The doc is in google docs in the exam study folder or follow the link below.

https://docs.google.com/file/d/0B6GI0t4hbq6bU05oZUs5U1dYN0E/edit?usp=sharing

2012 June Science exam

Hard copies were given out today.  Answer key is already online in the appropriate folder.  Come see us for a copy of the old 2012 exam.

Stress busting video...

It's getting hot in here

Yup..exams they are a coming.  We're trying to get all your study resources together in one place... as a part of your google drive, we've added a folder that is just for study materials and old exams.  Check it out.
https://drive.google.com/folderview?id=0B6GI0t4hbq6bOGw1U2laQU9Jb00&usp=sharing

Good luck... you've got only a few weeks left.

Forces & Motion Review Videos

In this review, we present videos that will help you with:
1. understanding gravity and how it affects how much you weigh  http://youtu.be/oaz-LJ4wrWM
2. undertstanding the relationship between distance, speed and time  http://youtu.be/y40aVo90ETE
3. why planes fly (Bernouilli effect) and ships float (Buoyancy)


4. how to transfer force through fluids (Pascal`s principle)

What sort of world do you want?

A few years ago, a girl named Severn Suzuki gave a speech at the UN.  She challenged the political leaders to  think about how they want to live and create a better world.  Take a look and reflect on what type of world that you want to live in, what type of world you want for future generations.

Energy Resources Research & Discussion Project

Earth Day celebration in Maria on Sunday... so try to attend or do your own thing to honour our beautiful home called Earth. Below is a videoclip from Greenpeace... have a look.

• Project description is on google drive already under the Earth, Air and Water unit
• Here are the research assignments

Topic	Research Team	Topic	Research Team
Fracking	Joe (to be confirmed)	Wave	Hannah & Cassey
Coal		Tidal	Dylan & Kyle
Uranium (nuclear)	Mike W & Jordan	River current	Jessie & Joy
Geothermal		Hydro (dams)	Ryan & Alex
Wind	Karen & Haley	Biogas
Solar	Molly & Courtney	Biofuel (ethanol)	Aly & Jason

• Monday April 22nd will be a research day
• Wednesday April 25th is a presentation day
• A summary of all energy resources and their qualities was found by Haley & Karen:
• http://crcresearch.org/case-studies/case-studies-sustainable-infrastructure/energy/wind-power-generation  
• (scroll down and there is a big chart titled "Impact of Electricity Generation Options")