Monday, March 2, 2009

why babies don't have teeth?

Our Answer:
Because they are born like that.

THE Answer:
Babies don't have any teeth at first because they don't need them. They receive all their nourishment from liquid food-breast milk or formula-during their first few months. When babies are born their digestive systems are not yet fully mature, and they cannot process solid food well. While capable of sucking, their mouths and tongues are not yet ready for the complicated process of chewing and swallowing solid food.

Babies change quickly, though, and by about four months they need to eat some kind of solid food to get the calories they need to keep growing. But the food that they eat is soft or soupy because they still don't have any chewing teeth. Still, babies can use their gums and tongues pretty well to eat specially prepared solid foods. And gumming hard foods prepares babies for the time when they will have a full set of teeth in their mouths (at about two years old).

Saturday, February 28, 2009

why kids ask why?

With Kids at this age what "Why" really mean is "That's interesting to me. Let's talk about that together. Tell me more, please?" When I've connected with children and begun to spin a tale to answer this question, they've sat enthralled. There was no need to mention because, or therefore, or cause, or effect. They don't need to know why, all they need is animated attention and me saying whatever came to mind about that subject. After a brief interchange, we were both happy.




Wednesday, February 11, 2009

where does the water from the toilet go?

Our Answer:

to the ocean.


THE Answer.

  1. Water from the sink, shower, toilet, and so on (now contaminated with chemicals and waste) goes down the drain and heads for either a wastewater/sewage treatment plant or a septic tank. I’m going to focus on the sewage treatment plant in this post.
  2. At the treatment plant, water goes through a primary or mechanical treatment where 60% of suspended solids are removed. Machines remove large objects including human waste, sand, gravel, rocks, oils, greases, rags, fruit, cans, and other objects that could clog or damage the equipment. These solids are usually sent to a landfill.
  3. The remaining liquid goes through a secondary treatment where aerobic bacteria breaks down soap, detergent, human waste and food waste. The bacteria consume the organic components and combine the less soluble parts into blocks called floc (which are removed).
  4. Finally, the water goes through a tertiary treatment where it is filtered and disinfected so it can be released back into the environment. Here are some common steps taken during this stage of treatment:
    • Nitrogen and phosphorus are removed (if necessary) to prevent algae blooms (where algae acts like cancer - it multiplies, uses all of the oxygen in the water, releases toxins and kill animals).
    • Treatment facilities disinfect with chlorine, ozone, or ultraviolet light to reduce the number of microorganisms in the water. Chlorine is commonly used because of its low cost, however, it can be toxic to the environment and aquatic life. Ozone is much safer but expensive. UV light is safer but high in maintenance and not always as effective.
  5. The treated water (or effluent quality water) is released back into the environment via streams, rivers, lakes, ground, etc.

Friday, January 23, 2009

why do we get static shocks?

Our Answer:
Because we have a lot of energy.


THE Answer:
Static electricity is generated whenever two materials are in contact with each other. All materials are made of electrical charges in the material atoms. In the universe there are equal amounts of negative electrical charge (electrons) and positive charge (protons). These generally try to stay in balance of equal amounts at every location.

However, when two materials are in contact, some of the charges redistribute by moving from one material to the other. This leaves an excess of positive charge on one material, and an equal negative charge on the other. When the materials move apart, each takes it's charge with it. One material becomes charged positively, and the other negatively.


why do we have lips?

Our Answer:
To give kisses.

THE Answer:
The lips are part of our sense organs. These as a whole detect our environment and allow us to alter our behaviour accordingly. An example would be my ears detecting a train coming and me getting off the track. Our lips contain many temperature sensors. If we consume food that is too hot, we may burn our tongue or mouth or throat, then those areas my swell up and prevent us breathing efficiently. Our lips prevent us from eating food that is potentially too hot.

Tuesday, January 20, 2009

why does it get dark sooner in nyc?

Our Answer:
Because we are up north.

THE Answer:
The earth it tilted 23.5 degrees in relation to the plane of the orbit around the sun. Because of that, we get seasons and right now, the sun is almost perpendicular over the Capricorn tropic, which is in the southern hemisphere.


Here, up north, the sun is much lower over the horizon and it gets up later and sets sooner. In the north of my country, Norway, the sun doesn't rise at all in December. It happens anywhere at the north of the polar circle.


why do we have hair in our armpits?

Our Answer:
I have no idea! All I know, is that it is very unfair for girls.

THE Answer:
While everything about our bodies appears to have some purpose, we haven't always discovered what the purpose might be. There are three things known about underarm hair:

1) It helps to keep the skin under your arms from rubbing against each other. Skin rubbing against skin can be irritating.
2) We have very productive sweat glands under our arms, but the location would normally trap the sweat against the skin. This would prevent the cooling effect that sweat is suppose to produce. The hairs keep a slight separation under the arms, allowing some air flow, but they also wick the moisture away from the skin to where air can carry the moisture away, instead of just running down your sides all the time.
3) Some theorize, and have some small evidence, that sweat glands under our arms and on our groins produce pheromones (scents that are sexually arousing). Like the second answer, the hairs make sure the scents are carried into the air. On the down side, bacteria love these moist areas, so if the underarms and groins are not kept clean, the smell of unwashed bodies overpowers the light scent of pheromones and causes the opposite reaction: "Ewh! You stink!"