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Science Stars!

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Science asks why. Why are things the way they are? It attempts to explain every sort of natural phenomenon. This section explores some of its more puzzling aspects.

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NATURE

 

Moon Mysteries
If its right half is lit, will the moon be more or less full the next night? Why does the moon appear to change size as it moves through the sky? What causes the moon to have different shapes? Why is a half-full moon called a Quarter Moon? Why can't we see the moon's far side? What causes solar and lunar eclipses?


5 pages
Seasons
Why do we have seasons? What's the difference between equinox and solstice? Why are summer days longer than winter days?
 
Weather
What are the 7 colors of the rainbow, in order? Does lightning travel from clouds to ground or ground to clouds? What is the difference between cirrus and cumulous clouds?
 
Latitude vs. Longitude
Which is which? How are they measured? What use are they?
 

THE SIX SIMPLE MACHINES

 
Lever
What do levers do? What are the similarities and differences between 1st, 2nd, and 3rd class levers? What are examples of each class? How do you calculate the load a lever will lift? What are two ways to derive a lever's mechanical advantage? What is the benefit of a lever that requires more effort than it produces?

5 pages
Pulley  
Wheel & Axle  
Inclined Plane  
Wedge  
Screw  
MISCELLANEOUS  
Carbon Dating
How does it work? How accurate is it?
 
   

 

 

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