Questions tagged [world-building]

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12
votes
2answers
6k views

If the Earth were a smooth spheroid, how deep would the ocean be?

At the moment there are deep seas and high mountains. But imagine that the land elevation of the Earth is equal everywhere. How deep would the ocean be in that case?
8
votes
1answer
2k views

For how long has the Earth been habitable for humans?

Let's imagine that a human (male or female) could be sent to the past, anytime after the birth of our planet. What would be their survival probability over time? If this question is too hard to ...
4
votes
1answer
506 views

What causes periodic floods?

I am trying to determine what could cause periodic flooding of the type that might generate a savannah or plain with low growing plants and grasses. Where does the water come from, and how or why is ...
3
votes
1answer
880 views

What does “rapid” mean in terms of igneous rock formation?

Specifically, what time period would it take for obsidian as opposed to basalt, to form? (I need to know how much faster obsidian cools than basalt.)
3
votes
1answer
91 views

The effect of buildings on frost

I have see this morning this curious garden where one part was covered with frost while the other was frost free. Question 1: What are the factor that play a role in this configuration? My guess ...
2
votes
0answers
182 views

A Wide-Open Passage Between the Indian and the Pacific [closed]

Today, through plate tectonics, the islands of Indonesia and the Philippines stand as barriers between the Indian and Pacific oceans. In fact, there once was a warm ocean current flowing from the ...
1
vote
2answers
45 views

Can gemstones be cut into sheets? [closed]

TL;DR: Without lasers, electricity, or otherwise modern tools, could large transparent gems be sliced (like glass window)? So I’m world building. On this planet they have caves with enormous gemstone/...
1
vote
0answers
104 views

Altering the Milankovitch Cycles [closed]

As I understand it, the Pleistocene ice ages were dictated by three major factors suggested by the Serbian geophysicist Milutin Milankovitch--eccentricity (orbital shape), obliquity (axial tilt) and ...
0
votes
1answer
73 views

If the earth were completely smooth and covered in water, what would occur with ocean waves?

Related to this post: If the Earth were a smooth spheroid, how deep would the ocean be?
-1
votes
2answers
123 views

The Search for Climate Forums [closed]

For my fictitious alternate Earth, one of the most important things to consider is that any change in geography and geology can result in profound changes in environment and climate. I've been ...