Using the Doppler shift effect
If the celestial body is in the blue shift, then its moving towards earth and if it's in the red-shift then it's moving away from earth.
Explanation:
Doppler shift effect is a phenomenon that occurs in waves due to relativity. When an object is relatively moving toward an observer, it tends to ‘compress’ the waves into a higher frequency/ shorter wavelength. Visible light will be observed in blue shift because blue light is of higher frequency than red. If the object is relatively moving away from the observer, it tends to ‘stretch’ the waves. Remember ALWAYS this is relative to the observer. hence giving them the perception of viewing the object in longer wavelength. The object is observed in red shift because red light it has a longer wavelength/lower frequency than blue light.
This phenomenon is not limited to light waves, but happens even in mechanical waves like sound. When a wailing ambulance is approaching you, you hear it in high pitch. However, when it passes you and moves away from you, you hear it in low pitch.
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If your observations had not been restricted to the area of the root tip that is actively dividing, how would your results have been different?Cells are in interphase 90% of the time, and, since most of the creation of plant cells occurs in the root tips, you would witness mostly interphase. 2.Based on the data in Table 3.1, what can you infer about the relative length of time an onion root tip cell spends in each stage of cell division?Most of a cells life cycle is spent in interphase. Metaphase is the longest stage of mitosis, and anaphase is the shortest.1.List three major differences between the events of mitosis and meiosis.Meiosis has four nuclear divisions, whereas, mitosis only has one; meiosis creates four haploid cells, whereas mitosis creates two diploid cells; and meiosis is the only one taking part in crossing over.2.Compare mitosis and meiosis with respect to each of the following in Table 3.2:Table 3.2Mitosis MeiosisChromosome Number of Parent Cells2n2nNumber of DNA Replications11Number of Divisions12Number of Daughter Cells Produced24Chromosome Number of Daughter CellsDiploid (2n)Haploid (n)Purpose/FunctionRepair and GrowthGamete and Spore
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Answer:
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