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Flashcards in solarsystem Deck (7)
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1

nebula

a cloud of gas and dust in outer space

2

solar nebula

The cloud contracted under its own gravity and our proto-sun formed in the hot dense center

3

nuclear fusion

a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus

4

sunspot

are temporary phenomena on the suns photosphere that appear as spots darker than the surrounding areas

5

terrestrial planets

A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals

6

prograde rotation

Having a rotational or orbital movement that is the same as most bodies within a celestial system. In our solar system

7

retrograde rotation

which is counterclockwise when viewed from above the suns north pole