Why do creationists claim that the Earth's magnetic field is decaying at a rate that indicates a young Earth?

Because young-earth Christians are notoriously untruthful when addressing the claims of evolution. This issue is one of the things that started me questioning all of Christianity's assertions. I noticed that most of their arguments against evolution were straw men or ad hominem attacks and appeals to authority, and so I investigated evolution on my own, away from my church masters, and came to the conclusion that they'd been feeding me horseshit on the subject.

The total magnetic field does remain unchanged for the simple facts that the convection cells of the molten iron which circulate in earth's liquid layers that carry an electric current which generate the earth's magnetic force are the same and unchanged it might weaken from an impact by meteorite that causes a drop in global temp. that lead to ice caps that get bigger and causes the earth to spin faster. the increase would be transmitted slowly from the mantle to the interior of earth.since the top part of the liquid layer picks up the increase first but the bottom part kind of follow behind the result would be the convection cells are pulled apart which causes the magnetic fields to weaken and fade away but later the convection cells will rebuild the fields and there is even a possibility the field will point to the opposite direction( magnetic field flipping) which happened 300 times within the last 170 million yrs.

This and your earlier ones highlight the importance of the peer-review process in science.

Without it, the deliberate distortions put out by these guys might get mixed up with actual science.

Unfortunately, the fact that these guys directly target their science-unaware audience means they will still get taken seriously by some people.

Part of their creationism is pseudoscience to fit their religious dogma.Real science means nothing to them.

The strength of the Magnetic Field has been measured for at least 135 years and hs shown to be decaying exponentially in that time with a most probable half-life of 1400 years. This means it would've been twice as strong 1400 years ago and 4 times as strong 2800years ago. 10,000 years ago it would've been as strong as a magnetic star! This is highly improbable, to say the least. Any objections to this conclusion must be based only on the same uniformitarian principles which evolutionists wish to retain and employ o any process from which they can thereby derive a great age for the earth. Of course, this would only be done in order to accommodate the evolution model, not because science demands it.

Peace

Creations Who??? Are you referring to Christians or Muslims.?? Muslims.. don't make such claims.. neither did they ever said that earth is 6000 yrs old.. They believe that earth is of very old age.. the time..since time is not mentioned in the Quran..

Because young earth creationists believe everything that their god, Kent Hovind, tells them.