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The theory of plate tectonics cannot be used in explaining: the origin of the Earth's core.
<h3>What is a tectonic plate?</h3>
A tectonic plate is also known as lithospheric plate and it can be defined as an enormous, solid, irregularly shaped rock slab, that comprises two (2) plates:
- Continental plates
- Oceanic plates
<h3>The theory of plate tectonics.</h3>
The theory of plate tectonics states that the solid outer crust of planet Earth (lithosphere) is typically divided into enormous (massive) slabs of solid rock (plates) that move over the asthenosphere, including the upper portion of the mantle.
<h3>The uses of the theory of plate tectonics.</h3>
- It can be used to explain the presence of magnetic anomalies on the ocean floor.
- It can be used to explain the geographical distribution of earthquakes and volcanoes.
- It can be used to explain the presence of glacial deposits in tropical areas.
- It can be used to explain the origin of mountains.
Read more on plate tectonics here: brainly.com/question/11541225
According to the context, Becquerel's experiment showed that a substance could constantly emit radiation even if it was not exposed to light.
<h3>What was Becquerel's experiment?</h3>
It was an experiment on the fluorescence of double sulfate of uranium and potassium where Becquerel discovered that uranium spontaneously emitted radiation naturally.
He deduced from this that uranium salts emitted radiation capable of passing through black paper and other substances opaque to ordinary light and is considered the first step in discovering radioactivity.
Therefore, we can conclude that according to the context, Becquerel's experiment showed that a substance could constantly emit radiation even if it was not exposed to light.
Learn more about Becquerel's experiment here: brainly.com/question/2954153
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