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PHYSICS TEST - Coggle Diagram
PHYSICS TEST
WAVES
transverse
amplitude, peak\crest, Lambda, trough
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one full cycle is one full wave (a circle), where the same movements again
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frequency: number of full waves that passes your eye in one second (f), measured in Hz (hertz)
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astrophysics
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Satellites
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geostationary: orbit the earth once every 24 hours, are used for communications
monitoring, weather, orbit every 2-3 hours
Cycle of a star
nebulae : collection of gas, rocks and dust
protostar : gravity slowly pulls together the particles, energy converted into heat
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red giant: hydrogen and helium gass, cold and red. can be a super giants grow bigger and bigger
death: small stars collapse and become a white dwarf --> then black dwarfs. supergiants explodes and creates a supernova. if the star is big enough it become a black hole.
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REFLECTION
mirror and normal are perpendicular. incoming\incident ray and reflected ray are opposite. Angle of incidence (angle between the ray and normal, i=r)
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big bang theory
The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now (its theory includes that the big bang is still expanding right now)
This extremely dense point exploded with unimaginable force, creating matter and propelling it outward to make the billions of galaxies of our vast universe
red shifted from far away, cosmic microwave background radiation