Mary asks…
How does air have substance and is matter?
I know that it’s matter because even though you can’t see it, you can still touch air. But I need to add more to that. Please help?
Please also add how air has substance. (:
water maker answers:
* It has mass because wind can push things over,
(or move sailboats or windmills).
* It has volume because it takes up space.
(Invert a glass and push it down into water. Air keeps the water out.)
Charles asks…
What should i build for architecture?
I have to build a bunch of things for architecture, my theme is “elements” (like water wind and fire)
For air i built a windmill, for water i built a fountain, for earth i made a globe out of pebbles…
What should i build for fire?
Any answers help thanks!
water maker answers:
The only thing I can think of is folding an Origami dragon, because after all he’s supposed to spit fire, right? In case you wanna give it a try…
Http://www.origami-instructions.com/origami-dragon.html
http://how-to-do-origami.com/documents/origami-dragon-instructions.php
http://dev.origami.com/diagram.cfm – enter in the search window, several dragon models get displayed – the snake dragon bottom left seems to be rather easy compared to many other models.
Sandy asks…
How will the coming energy crisis affect the world’s water supply infrastructure?
Energy in the form of electricity, diesel and natural gas is used to pump and process our raw water into clean drinking water, as well as the water we use to grow our food. Chemicals, materials and supplies for our water treatment plants and our water distribution systems are transported by truck, air and rail.
water maker answers:
A surprising amount of water is actually safe to drink when it comes out of the ground or from a river. It just gets polluted going through the delivery system. Most people will probably have filters on their taps for drinking water. There is no need to treat toilet water and shower water without all the chlorine is better for a person anyway. The plains were covered with water pumping windmills before electric/diesel pumps came along; we’ll just have to go back to that method. Water doesn’t need to rain down from a sprinkler to water a plant either, that’s just a wasteful way of using energy to water a plant.
George asks…
Will award best answer Is there a water pump that uses just air pressure to circulate the water?
I saw the pump on the show numbers i forgot what they called it but it started with an H all it had was 3 glass tubes and like glass reservoir’s they said that once the water level was just right the air pressure would cause the water to flow up the glass tube and be collected at the bottom and back up again
if you know the name or can find it online fell free to post it
water maker answers:
The airlift pump meets your first definition. The windmill (wind pump) uses moving air to power a pump. I could envision one using changes in air pressure to pump water, but I can’t think of a practical one.
Joseph asks…
How can you explain Air Resistance to kids?
In my science class, we have to do this project where we write a ‘children’s book’ on what we are studying, which is gravity. I don’t really understand air resistance, so yeah this is pretty much for me. I need a simple way that i can put in my project (and understand).
Thanks in advance 
(Please, no rude comments.)
water maker answers:
Air resistance is kind of another way of saying “air pressure.” Anything that moves through air is met with resistance. If you hold a helium-filled balloon on a string stationary, it floats vertically. But, if you move the string, the balloon doesn’t hang vertically. It kind of “drags” behind the string. That “drag” is due to the resistance of the air.
And you’ll notice that the faster you move the string, the more the balloon “drags” behind.
And you get the same results if you hold the balloon still and move the air… Like with a fan. And the faster the air moves past the balloon, the more the balloon “drags.”
Air resistance is what makes sailboats work. Air resistance is what makes windmills turn. It’s what makes airplanes fly.
And it can be dangerous. Air resistance, if the air is moving very fast, can blow houses apart, as in a hurricane, or a tornado. Actually there are other idiosyncrasies of air in motion present, but that’s simple enough to understand.
Maybe the problem is that air is kind of invisible. You can’t see it or what it does when objects are moved through it. But water does the same kinds of things… Only it’s thicker and so the results are more obvious.. But, if you put a heavy metal ball on a string and hold it stationary over the water, the string hangs straight down. If you move the string, the ball is going to “drag” behind at least a little. And, just as with the balloon, if you move the string faster, the ball is going to “drag” behind more.
You can experiment with different shapes in the water to see how they react differently. There are tools that make the flow of the air around an object visible, but they’re not probably going to be available to your science class. But water reacts very similarly… And it’s visible.
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