Friday, September 6, 2013
Some new SOLE!
Why do we have allergies?
By Dora, Alisha, Caoimhe
An allergy An allergy is a hypersensitivity disorder. Hives are a common allergic symptom. The reaction is called an allergen. The reactions are predictable. Allergies are one of four forms of hypersensitivity. These reactions might be damaging, uncomfortable, or occasionally fatal. An allergic reaction is distinctive because of an increase in the white blood cells. A variety of foods can cause reactions but 90% of the reactions are to cow's milk, soy, eggs, wheat, nuts, fish and shellfish.
When you are allergic to something your immune system mistakenly believes that this substance is harmful to your system. You can get some allergies through heredity.
Why do people close their eyes when they sneeze?
By Kaydn, Keeshan, Zach, Adrian D.
The reason you close your eyes when you sneeze is because it is a reflex. Your body has to generate a huge rush of air to make you sneeze. Everything clenches up tight to make you go achoo and blow air out through the holes to clear out the mucus.
How do boats float?
By Caden, Cameron, Adrian M.
The standard of floating was first recorded by Archimedes. It is upward water pressure , pushing on the bottom of the boat that is causing the boat to float. Ships have lots of air inside so they weigh less that the same volume of water, so they float. For a ship to sink it has to push aside some water and displace the air.
Why do animals live longer than humans?
By Abi, Aaliyah, Mia, Andrew
This can be true in some cases. Sea tortoises can live over a hundred years. Some parrots can lie over 80 years. Elephants can live over 70 years. Bigger animals can live longer because they are bigger and their metabolism is therefore slower and their heart rate is slower. Because they are larger they maintain their internal body temperature easier.