Abbr. Enth.

Two weeks ago, in Part I, we looked at a video promoting the Expanding Earth theory and picked apart the arguments presented.  For those of you who need a refresher, here’s the video again.

While it is easy to find the logical fallacies presented in this video, making a bad argument doesn’t actually mean you’re wrong. In most cases just being able to point out the errors in the logic of the argument would be enough to dismiss it until someone comes up with a better argument, in this case I have decided to keep digging anyway. This week I’m going to look at the actual evidence for and against the Expanding Earth theory.

First of all, we have to ask why the Earth is expanding. What is causing it to grow in size? I have found two different reason that advocates of this theory will claim. The first idea is that all of the meteorites, asteroids, comets, and space dust that have been colliding with Earth have been adding enough to its mass to make the Earth measurably bigger. The second theory suggests that the expansion is causing the planet’s crust to stretch and expand, creating “rip-zones”. While these two ideas seem like they would be exclusive, proponents will often argue from both points of view depending on what suits their argument better at the time. Either way, we’ll look at both.

First off, let’s look at the claim that the planet is accumulating mass from an outside source. I’ll even do them a favor and ignore the obvious problems with gravity when we’re changing the mass of the planet. While space dust and meteors/asteroids are the most commonly claimed outside source of mass, some people also claim that the energy from the sun gets converted to mass by photosynthesis when it is absorbed by plants. Frankly, though, these people are dumb. Photosynthesis takes six carbon dioxide (CO2) molecules and 12 water (H20) molecules and converts them into one glucose (C6H1206) molecule, six oxygen (02) and six water (H20) molecules. For those of you who don’t feel like doing the math out, I’ll do it for you:

6 CO2 + 12 H2O
= 6 C + 6 02 + 12 H2 + 12 0
= 6 C + 12 0 + 24 H + 12 0
= 6 C + 24 0 + 24 H

That’s 6 carbon atoms plus 24 oxygen atoms plus 24 hydrogen atoms. Photosynthesis turns this into:

C6H12O6 + 6 O2 + 6 H2O
= 6 C + 12 H + 6 O + 12 O + 6 H2 + 6 O
= 6 C + 12 H + 24 0 + 12 H
= 6 C + 24 H + 24 O

That’s 6 carbon atoms plus 24 hydrogen atoms plus 24 oxygen atoms. Net change? Zero.  The energy from the sun does not create the glucose, it is merely a fuel for the mechanism.

So what about space dust and meteors? Well I couldn’t find any solid numbers about how much mass we accumulate from meteors, all the sources I saw said it was negligible without giving solid numbers. One source said that it was hard to calculate since a lot of the bigger meteors that would be adding more mass to Earth would also be sending a good chunk of dust into space, so even if there was a net gain it wouldn’t be the full mass of the asteroid.

As for the space dust concept, I knew this sounded familiar as soon as I read it, and as I was looking I found why. A common Young Earth Creationist claim is to say that the rate of space dust accumulating on the moon is high enough that if the moon was millions or billions of years old, there would be a layer of dust on it so deep our astronauts would have sunk in beneath it upon landing. This theory came about when in 1960 a scientist by the name of Hans Pettersson was in Hawaii trying to measure the amount of cosmic dust accumulation, and provided an upper limit of 39,150 tons per day. He suggested that this was a high estimate and that he preferred a number about 1/3 of that. In 1967 another scientist claimed that the number may be as high as 700,000 tons per day! Luckily, a few years later, we would have better technology available and in 1976 D. W. Hughes published a figure of 48 tons per day. So how much accumulation is that over the Earth’s lifetime? Somewhere around 1.5 inches of dust over 4.6 billion years. In 1993 another satellite recorded around 121 tons per day, but that’s still not nearly enough to accumulate what is needed to make this theory work. (The numbers and dates were taken from here).

Well I don’t know about you, but I consider that side of the argument debunked. Let’s move on to the idea that the Earth is expanding without the help of outside forces. I suppose someone who took a semester or two of physics may be quick to note the Ideal Gas law, which states that volume has an inverse relation to heat and pressure (as the volume goes up, heat and pressure go down, as the volume goes down, heat and pressure go up). A good example of this is the diesel engine, which compresses the fuel within a constant volume which causes a great amount of heat and ignites the fuel. The Idea Gas law was meant to be used on gasses, but the relation is there for solids and liquids too, just not as extreme.

If we apply this to the Earth, one can see that the liquid hot magma is creating heat, which would create more pressure, causing the Earth to expand. I think that’s the basic idea behind this approach to the Expanding Earth Theory. It does, of course, have its downfalls. First off, as the size of the Earth increased, it would alleviate that pressure build up, causing the magma to cool back down, which would then cause cause a decrease in pressure, making the Earth decrease in size again. This would produce a small cycle and would not have the ability to build up enough pressure to create such a huge change in the size of the Earth.

Even if you argue that the cooling would not create enough negative pressure to decrease the size of the Earth, this constant increase would be leaving a big gap between the crust and the magma, a gap which we can scientifically confirm is not there. I can’t find any more claims of evidence for this version of the theory other than how it’s “so obvious even a child could see it”.

There are also a ton of other reasons why this theory won’t work (where did the water come from?). The fact is, the theory looks good in a flashy video, but it doesn’t have the evidence to back it up unless you just ignore huge sections of science. Any theory that claims conspiracies and then cherry-picks its facts for evidence is well on the road to failure.

This entry was posted on Friday, July 11th, 2008 at 12:00 am and is filed under Expanding Earth, Pseudoscience, Skeptic, Stupid. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.