Question

observation of the shapes of the continents led some scientists to speculate that the continents once fit together like puzzle pieces and had separated over time. other scientists disagreed, as there was no explanation provided for how the continents could have moved. the mechanism for tectonic plate movement was later discovered. what does this scenario demonstrate about how scientific knowledge changes?

• if a scientist proposes a new idea, it is up to them to prove it.
• new ideas are debated and may be confirmed as accurate.
• if a scientist waits long enough, proof of their ideas will be found.
• when a scientist proposes a new idea, other scientists usually agree.

Explanation:

The scenario is about the development of scientific knowledge regarding continental drift. Initially, the idea of continents fitting together was debated due to lack of a mechanism (tectonic plate movement was later discovered). This shows that new scientific ideas are debated, and as evidence (like the mechanism of plate movement) is found, they may be confirmed as accurate. The first option is incorrect because scientists don't just accept a new idea; they need to prove it. The third option is wrong as proof isn't just found by waiting, and the fourth is incorrect as other scientists don't usually agree immediately without evidence.

Answer:

New ideas are debated and may be confirmed as accurate.