Process for the task

For Part 1:

· Find the heights of the objects given by looking at the websites.

· Now think or discuss with your partner about how to put these objects in one sheet of paper.

· Do you have to scale the numbers? Then what scale? And how?

The definition of Logarithm is: (Fill in)

· Then convert all the numbers into Logarithmic scale. Graph a bar graph of the objects.

Amazing, isn’t it?

You may view the following sites:

http://www.wordwizz.com/pwrsof10.htm

http://www.vendian.org/mncharity/cosmicview/

http://www.nasa.gov/audience/foreducators/9-12/features/index.html

For Part 2:

The unit for measuring the loudness of a sound is a decibel (dB) and it is related to the intensity of a sound by: (Fill in)

View the following sites:

http://www.phys.unsw.edu.au/jw/dB.html

http://hyperphysics.phy-astr.gsu.edu/hbase/sound/db.html

http://www.howstuffworks.com/question124.htm

For Part 3:

What is acidity? You should first find the definition.

View the following sites:

http://pubs.usgs.gov/gip/acidrain/2.html

http://dwb.unl.edu/Teacher/NSF/C12/C12Links/www.epa.gov/acidrain/student/acidity.html

For Part 4, here are some references you can visit:

References:     http://www.twcac.org/Tutorials/brightness_of_stars.htm

http://curious.astro.cornell.edu/question.php?number=37

http://csep10.phys.utk.edu/astr162/lect/stars/magnitudes.html

http://www.geo.mtu.edu/UPSeis/intensity.html

http://www.geo.mtu.edu/UPSeis/intensity.html