sphere, round
Ellipse.
Presently, the ejected ring theory best describes the origin of moon.
A point.
The term that describes layered and round formations of ice that form in cumulonimbus clouds is "hail." Hailstones develop through a process of updrafts and downdrafts within the cloud, allowing water droplets to freeze in layers as they are repeatedly lifted and dropped. This results in the characteristic round shape and layered structure of hail.
A supernova.
sphere, round
vgrvr
Ellipse.
"Meteor" does.
Lava ;D
The term prism describes the shape of a wedge. It looks like a triangle on the two ends.
Double Helix.
Disc shaped.
A landform is a term that describes any natural geographical feature on the earth's surface, such as mountains, valleys, plains, and plateaus. Landforms are the result of various geological processes that shape the Earth's landscape over time.
Form Factor
Florida can be described as a peninsula.
Volcanoes