1 / 11

Types of Electromagnetic energy

Types of Electromagnetic energy. Low energy High energy Long wave Short wave. R O Y G B I V. Red light is low energy – cool Blue is high energy - hot. RED SHIFT AND Evidence of an Expanding Universe. Explain how Red shift explains the movement of the universe.

damia
Download Presentation

Types of Electromagnetic energy

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Types of Electromagnetic energy Low energy High energy Long waveShort wave ROYGBIV Red light is low energy – cool Blue is high energy - hot

  2. RED SHIFT AND Evidence of an Expanding Universe

  3. Explain how Red shift explains the movement of • the universe. • Explain the Big Bang Theory. KEY WORDS Red Shift Doppler Effect

  4. There is evidence that the universe is expanding: • - Analyzed light given off by stars. • Light waves work exactly like any other wave: • Waves can come far apart - long wavelength • Waves can come close together - short wavelength ROYGBIV

  5. Effect of motion on waves is the Doppler Effect. Not moving – all waves move away evenly. Moving– compressed in front, spread out in back.

  6. High pitch Low pitch

  7. Motion affects light waves too.

  8. when light waves are compressed close together, • the colour of the light appears more purple – • “blue shift” • when light waves are spread out, the colour • appears more red – “red shift”

  9. Every star and galaxy shows a red shift. • Things are moving AWAY - expanding universe. • Far away galaxies show most red shift - faster. normal “red shift” “blue shift”

  10. If the universe is expanding: • Must have started out from one point – singularity • All the matter in the universe was packed into one, extremely dense hot mass, under unimaginable pressure. • About 10-15 billion years ago. • There is evidence – red shift, radiation… • Scientists cannot yet explain “how” and “why.” • Big Bang is not the only explanation of the origin of the universe. • But beliefs are not theories – only theories can be scientifically tested and proven.

More Related