10 Safety Techniques:
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Lab accident
A 10th grade teacher named Anne Pole was trying to show her kids a demonstration of the rainbow of flames that results from burning four kinds of nitrates in separate crucibles. In the science lab the build up of methyl alcohol fumes went into a fire ball and went across a counter lit Alonzo Yanes on fire. Alonzo suffered from second and third degree burns on his neck and his head. Julia Saltonstall suffered less severe burns to her neck, head, and arm.
Steps of the scientific Method
observation
problem statement
Hypothesis statement
Experiment/data collection
Conclusion statement
Earth Spheres
- Atmosphere-surround gases or air that surround the earth
- Reaches over 350 miles up from the surface of the earth. Composed of nitrogen (78%), oxygen (21%), and other exponents exist in small quantities
- Has 4 layers- troposphere, stratosphere, mesosphere and thermosphere
- Biosphere- "life zone" of the earth includes all the living organisms and the organic matter.
- It is structured into a hierarchy known as a "food chain"