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Firstly, there definitely are plates, and they definitely move. Those are facts.

Secondly, "theory" in science doesn't mean the same thing it does in everyday language. In science, something doesn't qualify as a theory unless it explains everything we already knew and (correctly) predicts things we didn't already know. A "theory" is something that is generally considered to be almost certainly true, barring later discoveries showing that it may not be complete. That doesn't make it "wrong", necessarily, it just means it may only apply in special cases (or, perhaps, may NOT apply in certain special cases).

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Q: Why is the plate movement of the earth still a theory?
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Related questions

Why is tectonic plate movement still called the theory of plate tectonic movement?

Because a theory in everyday life is different than a theory in science. This site explains it well: look at link below.


How can we say that earth is still active?

That may refer to the Earth being "geologically active", meaning there is activity such as plate movement, earthquakes, volcanoes.


When did the plate tectonics stopped?

The movement of plate tectonics is still happening today. Movement will continue due to the continents are floating on the semi-molten mantle.


How has the expanding earth theory changed over time?

By now, this should not still be a theory, it should be common knowledge.


When did plate tectonics stop?

As far as the Earth is concerned - plate tectonics has not stopped; the plates are still in motion - which is why we get earthquakes and volcanic eruptions along the plate boundaries.


What processes that have been present in earth's past are still continuing?

Volcanic activity; plate movement; geothermal energy; erosion; sedimentation; wind, flooding, temperature extremes; radiation; water; uplift; earthquakes; glacial movements . . .


Is plate tectonics only a theory or is it real?

Well according to me, it's still a theory since scientists have not seen it yet. However as generations go on, technology will find out.


What is key to explaining plate tectonics?

Understanding that the core of the Earth is still hot and semi-molten.


When will you have a earthquake?

earthquakes are caused by tectonic plate movement. that's a fancy way of saying the following: the earth's crust isn't whole, it consists of several pieces. those pieces are floating on molten rock (magma). and so, they're not lying still. the movement of those plates is called tectonic plate movement. sometimes, two plates collide, move away from each other, or slide right past each other. Each of those movements can cause an earthquake.


Which theory explains how the continents drifted from one landless to their present locations?

The theory of continental shift is plate tectonics. Pangea was a supercontinent that broke up and drifted into the continents we have today (and are still drifting).


What force causes the seafloor to spread and continents to drift?

Originally conceived as "continental drift," the theory of plate tectonics explains the motion of Earth's landmasses. However, there is still much debate as to what drives this motion. Explanations include upper mantle convection currents, forces due to gravity, and the effect of the Earth's rotation.


Why does the shape of the earth's oceans and continents continue to change?

Due to plate tectonics still moving, it causes the Earth's oceans and continents to continue moving.