ENVS 2400 Lecture Notes - Lecture 2: Adam Smith, Fossil-Fuel Power Station, Sulfur Dioxide

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pinkdonkey813

16 Aug 2019

School

York University

Department

Environmental Studies

Course

ENVS 2400

Professor

Mark Winfield

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Document Summary

How is toxicity defined: quantitative information is needed to make effective decisions. Decisions must be defensible in court so good science is needed! We have a choice: detailed calculations or, approximate back of the envelope calculations or, something in between. 1 pizza every week with a diameter of 30 cm. = 3. 7 m2: b" is the correct answer for your annual pizza consumption. When you don"t have all the information. When you only need an approximate answer. Concern: we may have no way of knowing if the calculations are reasonably accurate. Accuracy means that predictions are close to measured observations. Scientists often have limited information no matter how many years they spend in the field or how large their grants are. Nature is very complicated at all scales from the molecular cellular population ecosystem. Cannot measure all variables with high frequency.

Related Questions

1) Explain the relationship between the reliability of a measurement and the instrument used to make the measurement.

Check all that apply.

We must consider the time of measurements when reporting and manipulating them.

We must consider the reliability of measurements when reporting and manipulating them.

The reliability of a measurement depends on the instrument used to make the measurement.

The reliability of a measurement depends on the time when the measurement was made. 2)

We must consider the scientist who did the measurements when reporting and manipulating them.

2) How should units be treated in calculations?

Check all that apply.

	Any algebraic operation can be performed. Units can be multiplied, divided, or canceled.
	Units should always be included in calculations.
	Units can be included in calculations but it is not necessary.
	Units are summed and canceled.
	You should remove units from calculations.

Review Chapter 6 and complete the table below explaining what happens to the nuclear envelope, spindle apparatus and chromosomes during each stage of mitosis. Stages of Mitosis Quiz.docx Submit your completed document as a file attachment in this assignment.

Stage of Mitosis	Spindle apparatus	Chromosomes	Nuclear envelope
Prophase
Prometaphase
Metaphase
Anaphase
Telophase
Cytokinesis

apricotreindeer983

you are given an envelope containing a piece of magnesium and a piece of zinc with a total mass of 0.0833 grams. the volume of gas collected at 25 Celcius with Patm at 755 torr is 59.74 mL. liquid column height is only 15 mm. calculate the mass of each piece of metal in the envelope.

ENVS 2400 Lecture Notes - Lecture 2: Adam Smith, Fossil-Fuel Power Station, Sulfur Dioxide

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