Thurs.  January 31, 2013

Physical Science A (    Thursday)

Bellwork:
    1.  What does the mechanical advantage of a machine indicate?  If the value of the mechanical     advantage     is less than 1, what does that indicate about the machine?

    2.  How does the amount of work done compare for the following situations:
        a.  Climbing a ladder up to a loft.
        b.  Walking up a plank up to the same loft. 

    3.  IF a situation requires 1200 J of work to perform, which will require more power, if the work is done     quickly or slowly?

Work and Power Quiz

Discuss machines, mechanical advantage, and efficiency.

HW:  Simple Machines:  You will have to research all six types of simple machines.  For each type of simple machine you should: explain how it works, the different types of each, how to increase the mechanical advantage, and how to decrease the mechanical advantage. 

For this assignment I will expect a drawing of each type of machine, followed by a paragraph explanation for each type of simple machine.

HW:The simple machine explanation will be collected tomorrow. 
   
Physical Science B

Test Today!  Please have your computers out and log into examview.  Make sure that you have a sheet of paper to write your answers down on.  If you would like a paper copy, please ask.

When you have finished please work on the vocabulary for the ecology unit.  We will be switching from using the physical science text to using the biology text. 

Secondly:
    -Read and take notes of Chapter 3. 
    -Focus on      a.  What is Ecology?
            b.  What are the levels of organization within the biosphere?
               c.  What are the different ways that living things obtain energy?
            d.  How does energy flow through an ecosystem?
            e.  How do nutrients and chemical cycle through an ecosystem?

HW:  Read the chapter, take notes on chapter 3, finish the vocabulary.