While it is a common knowledge nowadays that our planet is a sphere, with a core of iron and plate tectonics on the surface, it had not always been this way. This video provides a quick overview of various alternative hypotheses, such as Flat Earth, Hollow Earth, Expanding Earth, and many others! The author does not promote any of those, though - rather, these alternatives get debunked from the point of view of modern science.

Chapters:
0:00 Why I made this video
2:21 Earth of the modern science
3:19 Flat Earth
9:26 How to convert a flat-earther into a spherist
12:18 Concave Earth
13:44 Hollow Earth
16:40 Hydrostatic Equilibrium
19:17 Expanding Earth
26:32 Space Dust
31:16 Slow Expansion
32:58 Theory vs Hypothesis

Sources referenced:
https://www.dinox.org
https://en.wikipedia.org/wiki/Modern_...
https://en.wikipedia.org/wiki/List_of...
https://www.researchgate.net/publicat...
https://www.sciencedirect.com/science...\
https://hgss.copernicus.org/articles/...

Visuals used from:
https://thelifeengine.net
https://dinosaurpictures.org/ancient-...

Idea, research, script, pixelart, voice and editing by Surge
Music by Heepothesys
Acting by Surge, Paula, Mushi & Jojo

*some information given in the video is based on the knowledge of the author, who has no special education in most of the topics he speaks on, so please take it with a grain of salt and leave a comment if you disagree