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Everything affects magnetism, simply because all things have magnetic properties (which are a product of atomic motion). But yes soil contains iron, and often in a highly magnetic form, magnetite or maghaemite or magnetic iron sulphide (you don't need much of either to make an appreciable contribution- try just running a magnet over some dry soil, or mixing soil with water in a glass jar, and tape a magnet to the outside). The principle way in which soil 'affects magnetism' is via its effect on the Earth's geomagnetic field, that's how geophysicists find buried archaeological sites using magnetometers. That is where people lived in the past, or dug holes, or lit fires they often leave magnetic 'evidence'. To follow up the topic further you need to look up 'magnetic susceptibility' which will explain the magnetic properties of material, i.e. how magnetic (or not) they are). As a guide air is '0' on the SI scale water slightly negative (diamagnetic), a typical soil may be in the tens, or even hundreds, especially if was formed from igneous rock, or has been burnt. Any it's a huge topic, good luck!

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What is a testable question for magnetism?

How does the strength of a magnet affect its ability to attract other objects from varying distances?


How does precipitation affect soil formation?

Precipitation influences soil formation by introducing water that carries nutrients and minerals to the soil. Heavy rainfall can leach minerals from the soil, leading to changes in soil composition and fertility. Additionally, precipitation can cause erosion, which can affect soil structure and nutrient content.


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Yes, air temperature can affect soil temperature. Warmer air temperatures can cause the soil to warm up, while cooler air temperatures can cause the soil to cool down. However, the degree to which air temperature affects soil temperature can be influenced by factors such as the depth of the soil, soil moisture content, and the type of soil.


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