The essay geek4. The speed of all electromagnetic waves in space is ____________________ kilometers per second. 5. The seven different part
the more __________ that it contains. 4. The speed of all electromagnetic waves in space is ____________________ kilometers per second. 5. The seven different parts of the electromagnetic spectrum stated from the shortest wavelength to the longest are (1) ___________________________ ______________; (2) __________________; (3) _______________________ ______________; (4) ___________________ __________________; (5) __________________ __________________; (6) ___________________; and (7) _____________ ___________________. 6. Scientists use ________________________________ to measure the color of light. 7. The _____________________________ of the surface of a star can be determined from a stars color. 8. Bands of light in a stars spectrum allow scientists to determine what _____________________ are in the star. 9. The brightness of a star as seen from Earth is its ________________________ __________________________. The actual brightness of a star calculated by knowing its distance from Earth and apparent brightness is its _____________________ ____________________ or ___________________. 10. The distance to stars that are close to Earth can be measured by ___________________. 11. The _____________________ ___________________ allows scientists to determine whether a star is moving towards or away from Earth. If the light from the star is _____________-shifted it is moving away from Earth. If the light is __________________-shifted it is moving towards Earth. 12. One of the main pieces of evidence supporting the Big Bang Theory is the fact that all distant galaxies are __________________-shifted meaning that they are moving __________________ from Earth. 13. Another piece of evidence supporting the Big Bang Theory is the ___________________________ background of space which was measured with radio telescopes. Apr 27 2021
