18 terms

Concept 6.1: Our Star the Sun

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Terms in this set (...)

radiant energy:
energy that does not need matter to travel; light
star:
a massive ball of gas in outer space that gives off heat, light, and other forms of radiation
solar system:
a system of objects that revolve around a star
hydrogen:
the chemical element consisting of one proton and one electron
ultraviolet:
a type of electromagnetic radiation that has a higher frequency than violet light
filament:
the thin, glowing wire in a light bulb
telescope:
an instrument used to observe objects that are far away
radiation:
a process by which energetic electromagnetic waves move from one place to another
astronomy:
the study of the properties and behavior of bodies in outer space
transmit:
send energy from one place to another
energy:
the ability to do work or cause change; the ability to move an object some distance
rotate:
turning around on an axis; spinning
sunspot:
a cooler darker spot on the surface of the Sun
light:
waves of electromagnetic energy; electromagnetic energy that people can see
heat:
the transfer of thermal energy
universe:
everything that exists in, on and around the Earth
sundial:
a device that uses the position of the sun as it casts a shadow to measure time
sun:
any star around which planets revolve