Critical Thinking Exercise

By definition:
Learning -  the acquisition of knowledge or skill.

Teaching – the action  of a person who is showing or helping a person to learn.

Cognitive scientist define “critical thinking” as mental activity associated with these types of thinking:
a. applying reasoning
b. making decisions
c. problem solving

At FSCJ we have been addressing “Institutional Effectiveness”(I.E)  across the curriculum. The faculty is developing district wide exercises to assess learning outcomes. For chemistry (CHM 1020) the science council/cluster feels we need to pursue under our course goals and objectives the following outcomes:

FSCJ CHM 1020 Official Learning Outcomes:

1.      Explain and apply major concepts in general chemistry

2.      Demonstrate knowledge of scientific method

3.      Interpret scientific models such as formulas, graphs, tables and schematics, draw inferences from them and recognize their limitations.

4.      Demonstrate problem solving methods in situations that are encountered outside of the classroom

Temperature is a measure of the AVERAGE amount of energy in a substance not the total energy.

HEAT is the energy that flows from a higher temperature object to a lower temperature object.

Cold is the absence of HEAT.

Absolute Zero –Temperature at which the particles of a substance have absolutely no kinetic energy to give up.

The following exercise addresses all four of the above learning outcomes, especially #3:

Assignment:

Read section 2.6: Temperature Is Measure of How Hot – Heat It is Not!  The above images demonstrate equivalent temperatures on the Fahrenheit and Celsius scales with ice water and boiling water. The third thermometer compares to Kelvin Temperatures to Fahrenheit and Celsius temperatures.

Go to the temperature conversion web site:

1. Setup the Student’s theoretical temperature scale with the following parameters:
2.  The Freezing Point of water is Your Age or Your desired Age.  (Prof Taylor 50oT)(Ms Sweet 30oS)
3.   The Boiling Point of water is your body weight or desired body weight (Prof Taylor 250oT)(Sweet 120oS)
4.  Fill in the table below/next page with your parameters to make oX (Student): (Professor Taylor’s normal body temperature is the normal 98.6 oF, Professor Bessman 96.8 oF, and Ms Sweet 97.3 oF.
5.  If your normal body temperature is not 98.6 then fill in you Fahrenheit temperature and calculate the blanks across the line of the table.)) at least 5 points from +250oF to -150oF

Table of Equivalent Temperatures:

 Temperature oF Temp. oC Temp. K Temp. oT Temp. oS Temp. oX (Fahrenheit) (Celsius) (Kevin) (Taylor) (Sweet) (Student) 250 121 394 298 139.0 212 100 373 250 120.0 158 70 343 190 93.0 104 40 313 130 66.0 98.6 37.0 310.0 124.0 63.3 97.3 36.3 309.3 122.6 62.7 96.8 36.0 309.0 122 62.4 81 27 300 104 54.5 77 25 298 100 52.5 75 24 297 98 51.5 68 20 293 90 48.0 50 10 283 70 39.0 32 0 273 50 30.0 14 -10 263 10 21.0 0 -18 255 1 14.0 -4 -20 253 -2 12.0 -22 -30 243 -14 3.0 -28 -33.3 240 -17 0.0 -40 -40 233 -26 -6.0 -58 -50 223 -33 -15.0 -76 -60 213 -50 -24.0 -130 -90 183 -86 -51.0 -148 -100 173 -98 -60.0

1. Using a rectangular piece of graph paper, set up a graph plotting Fahrenheit versus Celsius so that vertical axis is Fahrenheit ranging from 250 down to -150 and the horizontal axis is -100 on the left and 125 on the right.
a. Describe the line or curve generated by this data:

b. If the plot is a line, then what is the slope of the line and the Y intercept and the X intercept.

c.  Write the equation for the line.(Do you remember the equation of a straight line from
algebra?)

d. If the plot is a curve, can you write the equation of the curve?

1.  Now plot Celsius versus Kelvin on a rectangular coordinate graph. If Kelvin is the y axis and Celsius is the x axis,
1. what is the y axis intercept? What is the slope of the line?

1. Is there an easier way to find the slope of the line by looking at the data?

1. At what temperature Celsius would kelvin equal zero?

In the Suchocki  textbook on page 40 Figure 2.21 refers to temperature on the Fahrenheit and Celsius scales as degree F (oF) and degree C (oC), but in kelvin temperature, temperatures are referred as kelvin units  not have the degree o symbol before the K. Why?

8. Now plot Celsius versus Student and Fahrenheit versus