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13 terms

Science Vocabulary Test

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Universe
everything in space
Astronomer
scientist who study the universe
Observatory
the place where astronomers study the universe
Telescope
instrument that magnifies objects; first used by Galileo
Reflecting Telescope
gathers light waves with a mirror
Refracting Telescope
gathers light with a lens; lens bend the light waves
Radio Telescope
gathers radio waves given off by an object in space
The Hubble Telescope
Orbits around the earth
Satellite
objects that circle other objects
The first satellite
was used by Russia; name is Sputnik; in space in 1957
Probes
unmanned crafts sent into space
Astronomical Unit
the unit of measure equal to the distance between Earth and the Sun. This distance is 93,000,000 miles. The unit is only used inside the solar system. (AU)
Light Year
the distance light travels in 1 year. Used to measure distance outside the solar system. 1 light year= 6 trillion miles a year= 186,000 miles per second