Summary
Dr. Binocs explains why scientists decided Pluto is a 'dwarf planet' rather than a full planet. A great discussion-starter about how science changes.
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Teaching resources
Discussion questions
Discussion
Dr.
- What is a dwarf planet?
- Why did scientists change Pluto's classification?
- Does science ever change its mind? Why is that okay?
Quick work-a-long
Vocabulary: Pluto, dwarf planet, orbit, scientists.
Try it: Explain in one sentence why Pluto is now called a dwarf planet.