Space

Chapter 11

Vocabulary

ACOS # 11

•asteroid•comet•meteor•meteoroid•meteorite•solar system•planet•inner planets•outer planets

•star•protostar•magnitude•light year•galaxy•space probe•space shuttle•space station

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

a permanent place in space for astronauts and scientists to live and work

space station

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

small rocky object that orbits the sun

asteroid

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

4 planets closest to the sun; they are rocky and smaller than the others

inner planets

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

giant sphere of glowing gas

star

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

small orbiting bodies made of dust, ice, and frozen gases

comet

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

an enormous system of gases, dust, and stars held together by gravity

galaxy

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

large body that revolves around the sun

planet

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

the Sun and all bodies that revolve around it

solar system

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

A large piece of matter that enters the Earth’s atmosphere and becomes very hot from air friction

meteoroid

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

4 planets farther from the sun; they are larger than the other planets and made mostly of gas

outer planets

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

unit of measurement for distances in space; the distance light travels in one year

light year

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

first stage in the formation of a star

protostar

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

brightness of a star

magnitude

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

streak of light from a meteoroid

meteor

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

chunk of meteor matter fallen to Earth

meteorite

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

unmanned space craft; a space craft that carries special instruments into space

space probe

• asteroid• comet• meteor• meteoroid• meteorite• solar system• planet• inner planets• outer planets• star• protostar• magnitude• light year• galaxy• space probe• space shuttle• space station

manned space craft; a vehicle that takes astronauts and equipment into space

space shuttle

Space

The Final Frontier