SNHU PHY-150 MODULE 2 PRACTICE EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS | ALREADY GRADED A+<RECENT VERSION>

SNHU PHY-150 MODULE 2 PRACTICE EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS | ALREADY GRADED A+&lt;RECENT VERSION&gt; 1) Which of the following statements about eclipses of the Sun is true - answer For a total eclipse of the Sun to happen, the Moon must get directly in front of the Sun, as seen from Earth 2) Recently, the media, always trying to make things sound sensational, have started to call totally eclipsed moon "the blood moon." Why does the Moon look reddish to us when there is a total lunar eclipse? - answer The Earth's atmosphere bends different colors of light to a different degree. During a total lunar eclipse, the red light of the Sun, filtering through the Earth's atmosphere colors the Moon red 3) The number of degrees of arc that your location is north or south of the Earth's equator is called your: - answer latitude 4) The earliest telescopes used by astronomers were: - answer refractors 5) We have two waves of light, A and B. Wave A has a higher frequency than wave B. Then wave B must have: - answer longer wavelength 6) Which of the following statements about electromagnetic radiation is FALSE? - answer the radiation consists of tiny charged particles given off by the nuclei of atoms 7) Why do different types of atoms (elements) give off or absorb different spectral lines? - answer because the spacing of the energy levels is different in different atoms 8) How do astronomers learn what elements are present in a given star? - answer look at the absorption lines in its spectrum 9) Typically, astronomers express the right ascension of a star on the sky in what units? - answer hours, minutes, and seconds 10) A friend of yours (who has not had the benefit of an astronomy course) tells you about a report he has read in a tabloid newspaper. They claim that on the dark side of the Moon, which is never in sunlight, there is a secret base of aliens who cannot stand light, and who send UFO's to Earth under the cover of darkness. Ignoring the UFO claim for a moment, what is the scientific error in this story? - answer all sides of the Moon are illuminated by sunlight in the course of a month; there is no dark side 11) An astronomer discovers a new star and wants to measure its temperature. She would typically do this by: - answer making a blackbody curve and finding the wavelength of the peak (maximum) 12) The most important function of an astronomical telescope is to: - answer collect as much light as possible and bring it to a focus 13) _____ is the number of waves that cross a given point per unit time (in radiation) - answer frequency 14) During what phase of the Moon is the Moon up only during the night hours and all night long? - answer full moon 15) _____ is the technique of transmitting radio waves to an object and then detecting the radiation that the object reflects back to the transmitter; used to measure the distance to, and motion of, a target object or to form images of it - answer radar 16) A _____ is a telescope in which the principal light collector is a lens or system of lenses - answer refracting telescope 17) _____ is an eclipse of the Sun by the Moon, caused by the passage of the Moon in front of the Sun; solar eclipses can occur only at the time of the new moon - answer solar eclipse 18) An _____ is a series or pattern of dark lines superimposed on a continuous spectrum - answer absorption spectrum 19) A _____ is the distance from crest to crest or trough to trough in a wave - answer wavelength 20) In the summer of 1996, the European Space Agency announced that it would be suspending the operations of the International Ultraviolet Explorer. Astronomers who were most unhappy about that announcements were likely to be studying what types of objects? - answer very hot stars 21) In 1911 Ernest Rutherford did a famous experiment using fast-moving alpha particles as bullets and very thin gold foil as a target. The results of this experiment showed that: - answer that the nucleus of an atom was tiny compared to the size of the whole atom 22) _____ is the angular distance north or south of the celestial equator - answer declination 23) The two regions of the electromagnetic spectrum where the Earth's atmosphere is transparent (radiation can get in) are visible light and: - answer some radio waves 24) When a knowledgeable amateur astronomer tells you that she has a 14-inch telescope, what does the number 14 refer to? - answer the diameter of the primary lens or mirror 25) ____ is the coordinate for measuring the east-west positions of celestial bodies; the angle measured eastward along the celestial equator from the vernal equinox to the hour circle passing through a body - answer right ascension 26) ____ is the diameter of the primary lens or mirror of a telescope - answer aperture 27) Planck's constant relates: - answer the frequency of a wave to its energy (when thought of as a photon) 28) An _____ is an idealized object that absorbs all electromagnetic energy that falls onto it - answer blackbody 29) Which of the following is NOT an advantage that the Hubble Space Telescope has over large telescopes on Earth? - answer the Hubble has a larger aperture than any visible-light telescope on Earth 30) If you want to locate someone precisely on the surface of the Earth, you specify her exact latitude and longitude. If you want to locate a star precisely on the sky, you need to specify its exact: - answer right ascension and declination 31) What happens during stage IV (4) sleep? - answer Growth hormone is secreted 32) A difference between the dissociation theory and the response set theory of hypnosis is that dissociation theory claims that - answer hypnosis is an altered state of consciousness, while response set theory claims it is not an altered state 33) The optic chiasm is where - answer the optic nerve from each eye crosses over the the other side of the brain 34) When you are sleep deprived, to which neurotransmitter that helps to keep you alert during the day have you most likely become less sensitive? - answer norepinephrine 35) Because genetics appear to influence one's need for sleep, it would be expected that - answer identical twins would be more similar in their sleep needs that fraternal twins 36) Alcohol is a - answer depressant, because it slows down nervous system activity 37) Researchers at the Smell Good Company want to make their home air freshener smell even better to customers. What principle will the researchers use to determine the amount of additional fragrance needed for customers to just notice the improvement? - answer Weber's ("Vay ber") law 38) The moon illusion disappears if - answer you view the horizon moon by turning away from the moon, bend over and look at the moon upside down, between your legs 39) In contrast to insomnia, narcolepsy is - answer rare 40) Joseph suffers from REM behavior disorder. This means that - answer his body is not experiencing the muscle paralysis that normally accompanies REM sleep 41) If you like the taste of Asian food you may be especially sensitive to a "fifth taste" called - answer umami 42) Scott sleepwalks. When is Scott most likely to exhibit this behavior? - answer when he is in non-REM sleep 43) Earrings are worn on the _____ of the ear. - answer pinna 44) Hypnosis is described as a - answer method used to create a heightened state of suggestability 45) Caffeine is considered a psychoactive drug because it - answer affect the brain and behavior 46) The trichromatic theory states that - answer three different types of cones detect the three different primary colors of light 47) If you have just walked into a dark movie theatre in the middle of the day, you may not be able to determine which seats are empty and which are full because it can take long time for _____ to occur. - answer dark adaptation 48) Most research on extrasensory perception has shown that it is - answer not supported by scientific investigation 49) Ivana has spent the last several nights studying for midterm exams. She has not been sleeping as much as she usually does. Which of the following is Ivana most likely to experience due to her reduced amount of sleeping? - answer increased susceptibility to cold and flu viruses 50) The suprachiasmatic nucleus is - answer our internal clock influencing sleep and wakefulness 51) If your retina contained only rods, you would be unable to - answer see color 52) The most commonly reported sleep disorder is - answer insomnia 53) A loss of neurons responsible for producing _____ may be the cause of narcolepsy. - answer hypocretin 54) The inner layer of our skin is called the - answer dermis 55) If you are relaxed after drinking alcohol, it is most likely because of alcohol's effect on - answer GABA 56) Melatonin tends to make you - answer sleepy 57) If you suddenly fall into REM sleep during alert times of the day, you may be diagnosed with - answer narcolepsy 58) Unlike humans, certain animals can see infrared and/or ultraviolet rays because of their - answer sensitivity to a wider range of electromagnetic energy 59) When you travel in the car you have a tendency to experience motion sickness. This is most likely because you are especially sensitive to changes in your - answer vestibular system 60) The opponent-process theory would predict that after staring at a red dot for 60 seconds, and then looking at a blank white paper, you would most likely report seeing a _____ afterimage. - answer green 61) Saturation of light is to _____, as amplitude of light is to _____. - answer purity; brightness 62) The primary colors of light are - answer green, red, and blue 63) Sudden infant death syndrome has been associated with - answer sleep apnea 64) "The thoughts, feelings, and aroused states of which we are aware" is the definition of - answer consciousness 65) When we first fall asleep, we enter into - answer non-REM sleep 66) Alcohol is to _____, as caffeine is to _____. - answer depressant; stimulant 67) The hammer, anvil, and stirrup are located in the - answer middle ear