Spider - Description. 1  1: pedipalp 2: trichobothria 3: carapace of prosoma (cephalothorax) 2  15: sternum of prosoma 16: pedicel (also called pedicle) 3  Spiders are chelicerates and therefore arthropods. 4  Spiders and scorpions are members of one chelicerate group, the arachnids.
See also: Meteoroid and Meteor. A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the Earth's atmosphere and impact with the Earth's surface.
The word meteor is the root word for both meteorite and meteoroid, and most people think of a big space rock when they hear any one of the three. But what are the real differences between meteors, meteorites, and meteoroids, and how do the suffixes, -ite and -oid, give that information away? A meteor is a block of matter, relatively small by cosmological standards, that has descended into Earthâs atmosphere from outer space, burning a trail of dust and fire as its high speed produces friction with the air.