ACTIVITY 8. Choose the best answer on the given words inside the box. (Week 8: use module 16-17 asyour reference)Doppler effectparallaxCosmic distance ladderDistant measurementHubblemovement of objectwavelengthLuminosityredshiftstandard candles1. redshift: Hubble:: Bassel2.: distance: Doppler effect: frequency3. spectrurn: redshift:standard candles4. spectral lines:effect of direction: parallax5. redshift:parallax: inclination of two lines6. values of a distant: Bassel: celestial bodies:L: sound waves: cosmic distance ladder: distance7.8. parallax: distance of a planet from earth: Doppler effect:9. space-based telescopes:more distant bodies: standard candles10. use of variable stars:: stars >1000 lightyears : distant measurement

1. Parallax 2. Cosmic distance ladder 3. Luminosity 4. Red shift 5. Wavelength

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