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Mr. Vazquez Science Homework

September 15 - September 17

PERIOD 2 TRANSITIONS SCIENCE:   No Homework

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PERIOD 3 EARTH SCIENCE:  Lab preparation

We will be modeling star magnitudes in this lab.  In order to prepare for it you must write the Title, Objective, Materials, and Procedures before you start the lab.  You must also create the data tables where you will be recording your observations. Finally, write the Questions,  that will help you analyze your results and reach a conclusion. 

↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓Copy This in your Lab Notebook (Composition)↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

Title:  Modeling Star Magnitude

Objective:  To compare the absolute and apparent magnitudes of two model stars.

Materials:

-2 flashlights with lens and reflector removed 

-masking or painters tape

-tape measure

-safety goggles

Procedure:

  1. Use a tape measure and masking/painters  tape to mark 1-, 3-  and 7-meter distances from your observation point. Mark the two flashlights A and B respectively.
  2. Place both flashlights at the 1 m mark so that they face you and are parallell to one another.  If the flashlights are not the same size, make sure that the light bulbs are both placed at the 1 m mark.
  3. Compare the appearance of the two flashlights. Does one light appear brighter that the other?  Record your observations in the Data Table.
  4. Move Light B to the 3 m mark. Compare the appearance of the two flashlights. Record your observations in the Data Table.
  5. Move light B to the 7 m mark.   Compare the appearance of the two flashlights.  Record your observations in the Data Table. 

Observations

Data Table

     Distance From

   Observation Point    

                         Flashlight A                                                    Flashlight B                       
               1 m  

 

 

 

               3 m  

 

 

 

              7 m   

 

 

 

Analysis 

  1. Does the magnitude change as distance increases?  If so, which type of magnitude is this?
  2. What did you learn about light’s magnitude by starting with the flashlights at the same distance?

Conclusion

What modifications would you make to this laboratory activity?  

What other ways, if any,  could be used to model star magnitude?

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Period 4 MS GENERAL SCIENCE

COMPLETE LESSON REVIEW ON PAGE 389

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PERIOD 5 LIFE SCIENCE

COMPLETE LESSON REVIEW ON PAGE 91

Details

Start:
September 15
End:
September 17
Homework Category: