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.
Learn More:
For more on Doppler shift effect;
brainly.com/question/6787528
brainly.com/question/3841958
#LearnWithBrainly
Answer:
D) 1, 2 and 3
Explanation:
The floor of the orbit is the structure involved in the fracture by Reventon. On both sides of the face at the level of the midline we find the orbital cavities responsible for housing the eyeballs and their annexes. The zygomatic bone is part of the orbit floor. With orbital floor fractures, the prolapse of the orbital fat in the maxillary sinus can be considerable and the lower rectus muscle is equally compromised.
When the air pressure within the alveolar spaces falls below atmospheric pressure, air enters the lungs (inspiration), provided the larynx is open; when the air pressure within the alveoli exceeds atmospheric pressure, air is blown from the lungs (expiration).
Viruses<span> are much, much smaller than </span>prokaryotes<span>. </span>Prokaryotic<span> and </span>Eukaryotic cells<span>are both alive, while </span>viruses<span> are not. </span>Viruses<span> have very few organelles, similar to the</span>prokaryotic cells<span>. They contain a plasma membrane, </span>cell<span> wall, RNA or DNA, and a protein capsule.</span>
Answer:
The steps that can be seen in this story are observation and the questioning phase, which can also be called elaboration of the problem.
Explanation:
The scientific method is a set of phases that are able to guide researchers to the creation of scientific knowledge, through an experiment. This method is essential for conducting scientific research, allowing an experiment to be managed in a way that promotes answers to scientists' questions. The scientific method presents the phases called observation, questioning (or elaboration of the problem), elaboration of hypotheses, experimentation, analysis of the results and conclusion.
In the story shown in the question above, we can see the phases called observation and questioning. The observation takes place the moment Fleming noticed a fungus capable of growing on colonies of bacteria that cause throat infections, killing them. This observation made him enter the questioning phase, when he wondered if the fungus was able to prevent the growth of these bacteria.
