JournalSancXi

STEM Fair

STEM Fair: Question, Procedure, and Hypothesis

Question: What are the best solutions to cut down the amount and power of light we use?

Procedure: Cover an LED light to see which prototype reduces amount of light projected the most. Materials: cotton or linen, pressure-sensitive styrene

Hypothesis: The prototype of cotton will successfully reduce the amount of light projected the most and possibly be solution to cut down the amount and power of light we use.

Prototype: Three lampshades made from cotton[1], linen[2], and nylon[3].

Journal #1 What are the main consequences of light pollution? //[|https://www.globeatnight.org/]//**//[|light]//**//[|-]//**//[|pollution]//**//[|.php]// The main consequences of light pollution are starlight is being washed out from the night sky, it is preventing more research in astronomy, it is disrupting ecosystems, it has health effects and wastes energy.

What are the best solutions to cut down the amount and power of light we use? //[|www.asnsw.com › Observing Facilities]//
 * 1) Instead of white light use red light.
 * 2) Do not use a 100W+ light.
 * 3) Buy energy-efficient **compact fluorescent bulbs** for your most-used lights. Although they cost more initially, they save money later by using only 1/4 the energy of an ordinary incandescent bulb. Compact fluorescent bulbs 8-12 times longer.
 * 4) Shield light with a special cover.

Journal #2

How can humans do their part in the fight against light pollution? [|//www.asnsw.com › Observing Facilities//] Humans can do their part in the fight against light pollution by replacing their light bulbs with more environmental friendly and by not using light when it is not necessary.

For Procedure...

Different types of fabric: //[|https://www.american]//**//[|light]//**//[|ingassoc.com/]//**//[|Light]//**//[|ing.../]//**//[|Light]//**//[|-Sources-]//**//[|Light]//**//[|-Bulbs.aspx]//