The continents look like that because they use to be a SUPER-CONTINENT called PANGAEA.
the earths continents are the same ..
A tornado
Suction vorticies as smaller columns of rotating air within a tornado. They have more intense winds than the rest of the tornado. The suction vortices sometimes look like "mini tornadoes" moving around inside the main circulation.
Like earth and islands.
It would depend on the severity of the tornado.
The edges of some continents look as if they would fit together like pieces of a puzzle.
a funnel
A tornado looks either looks tall and skiny, short and fat,or medium sized.
Without a funnel, a tornado will likely appear as a whirling cloud of dust or debris. If there is not enough of that present, then the tornado will be invisible.
Have a look at this site http://thecontaminated.com/earth-at-night-continents/
Tornadoes come in different shapes, and the shape changes during the life of the tornado. Some tornadoes are like thin tubes or ropes, some look like large wedges. If it is wrapped in rain, or there isn't enough light, it can be hard to see a tornado. Sometimes clouds may look like a tornado but aren't, so looking for other clues like rotation is important.