Thursday, February 24, 2011
Water Turbine Project
Topic: Forces and Newtons Laws
Understand and apply the relationship between force, mass and acceleration.
F=ma
Acceleration is applied through force. Mass is the turbine. The force acting upon it is the water flowing that causes acceleration. So the greater amount or weight of water on the mass, the greater the acceleration. Acceleration depends on force and the distance force moves the water.
Topic: Velocity and Momentum
Explain real life phenomonon in terms of v and m.
p=mv
The greater amount of water hitting the wheel the higher the speed and the faster it will move. The less quantity of water will decrease momentum. Velocity is the speed and direction applied to how the water will be hitting the turbine will give it a certain momentum depending on the mass. The velocity of the water hitting the blades which will create a certain momentum. The greater the mass will create less velocity due to their inverse relationship. A water turbine and how it works is an example of a real life phenomonon in terms of v and m.
Anita worked on a paper model of a fan with construction paper, paper cup, and nail ...The pictures posted will show examples. Over the weekend i will come up with another design to give us more ideas for our project.
Understand and apply the relationship between force, mass and acceleration.
F=ma
Acceleration is applied through force. Mass is the turbine. The force acting upon it is the water flowing that causes acceleration. So the greater amount or weight of water on the mass, the greater the acceleration. Acceleration depends on force and the distance force moves the water.
Topic: Velocity and Momentum
Explain real life phenomonon in terms of v and m.
p=mv
The greater amount of water hitting the wheel the higher the speed and the faster it will move. The less quantity of water will decrease momentum. Velocity is the speed and direction applied to how the water will be hitting the turbine will give it a certain momentum depending on the mass. The velocity of the water hitting the blades which will create a certain momentum. The greater the mass will create less velocity due to their inverse relationship. A water turbine and how it works is an example of a real life phenomonon in terms of v and m.
Anita worked on a paper model of a fan with construction paper, paper cup, and nail ...The pictures posted will show examples. Over the weekend i will come up with another design to give us more ideas for our project.
Tuesday, February 15, 2011
Thursday, February 10, 2011
Group Candle Project
Proposal- How much oxygen does a candle use? Candle and oxygen consumption
Research question- Does candle shape, size,and type affect oxygen consumption?
Hypothesis- Does a larger flame equal faster consumption?
Materials- jar and lid, three different sizes of candles, and lighter
Procedure- Burning variable candles in a jar with a lid measuring time until candle goes out for lack of oxygen.
Research question- Does candle shape, size,and type affect oxygen consumption?
Hypothesis- Does a larger flame equal faster consumption?
Materials- jar and lid, three different sizes of candles, and lighter
Procedure- Burning variable candles in a jar with a lid measuring time until candle goes out for lack of oxygen.
Sunday, February 6, 2011
Baloney Detection Kit & Harwood Model
In science, we always depend on experimental results, data, observation, measurements, and facts. The Harwood Model contains nine activities in which scientists engage throughout the scientific process. In science new ideas are considered and to rule out skepticism. In order to do this scientists are equipped with the Baloney Detection kit as a tool. This tool implies steps to avoid logical and rhetorical fallacies while the Harwood model implies a tool to provide framework for structured, guided, open inquiry lessons to explain the scientific process. The two models both use activities in a similar approach as far as asking questions to determine the difference between science and pseudoscience and to determine the range of probability between true and not true.
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