Why are stars and planets spherical (ball shaped)? When stars and planets were made, they began as round balls in space.

Gravity pulls evenly towards the center. Over time this rounds out a planet into a sphere.

Gravity pulls harder on parts that stick out. This extra gravity makes planets more round.

second option

Explanation:

When a forming planet is big enough, it starts to clear its path around the star it orbits. ... A planet's gravity pulls equally from all sides. Gravity pulls from the center to the edges like the spokes of a bicycle wheel. This makes the overall shape of a planet a sphere, which is a three-dimensional circle.

light bulb

explanation:

superior technology and improved medical knowledge to foster imperialism. quinine enabled europeans

to survive tropical diseases and venture into the mosquito-infested interiors of africa and asia. the combination

of the steamboat and the telegraph enabled the western powers to increase their mobility and to quickly respond

to any situations that threatened their dominance. the rapid-fire machine gun also gave them a military advantage

and was in convincing africans and asians to accept western control. the following table summarizes the

causes of the new imperialism:

causes of new imperialism

economic military/political humanitarian/religious technological

need for markets need for military bases white man’s burden new medicine

raw materials national security spread of christianity new weapons

source of investments source of

pride—nationalism

social darwinism

(superiority of western

society)

transportation

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