Phsc 121 - Study guides, Class notes & Summaries

PHSC 121 Exam 3 (HW 8-10) Liberty University Correctly Answered Rated A+ 2024. The earth's axis of rotation is tilted 23.5 degrees relative to the ecliptic - CORRECT ANSWER We have seasons because (text p 32-33) the Sun is now crossing the equator into the northern hemisphere and the northern hemisphere begins to face toward the Sun. - CORRECT ANSWER Which of the following is true of the vernal equinox? Sun is now crossing the equator into the northern hemisphere and the northern he...

PHSC 121 Hw 8 Exam Questions With All Complete Answers A black hole is - Answer -b. a region in space where mass produces a gravity field so intense that neither matter nor light itself can escape Black hols are thought to be caused by - Answer -a. collapsing stars b. concentrated mass at the center of galaxies Black holes are theorized to be - Answer -b. at the center of galaxies c. at the center of quasars A quasar is - Answer -c. a large remote energy source which may contain a ...

PHSC 121 Final Exam Questions And Answers 4 points of the scientific method - Answer -observation, testing, assumption, hypothesis Our solar system consists of ______ and has ___ major planets - Answer -the Sun and all the objects that orbit the Sun / 8 Why isn't Pluto considered a planet? - Answer -It does not dominate its orbit Light from the Sun takes ___ to reach Earth - Answer -8 minutess The Kuiper Belt is located __________________ - Answer -beyond the orbit of Neptune ...

PHSC 121 STUDY GUIDE TEST 2024. Babylon - CORRECT ANSWER Which culture/country seems to get far less credit than it deserves in terms of ancient science and technology? 5000 years - CORRECT ANSWER How long ago was astronomy first practiced? Everything physical that exists - CORRECT ANSWER What is the universe? 1x10^8 - CORRECT ANSWER How do you write million in scientific notation? D - CORRECT ANSWER The ISS is: A. A manned space mission to do science B. A satellite that has ...

PHSC 121 HW 8 Review Practice Test 2024. A black hole is - CORRECT ANSWER b. a region in space where mass produces a gravity field so intense that neither matter nor light itself can escape Black hols are thought to be caused by - CORRECT ANSWER a. collapsing stars b. concentrated mass at the center of galaxies Black holes are theorized to be - CORRECT ANSWER b. at the center of galaxies c. at the center of quasars A quasar is - CORRECT ANSWER c. a large remote energy source whic...

PHSC 121 hw 1 Test Questions with Correct Answers Why does the eccentric shape of Earth's orbit make winter in Earth's Northern Hemisphere different from winter in Earth's Southern Hemisphere? - Answer-In the Northern Hemisphere, winter coincides with the time when Earth reaches perihelion; in the Southern Hemisphere, winter coincides with the time when Earth reaches aphelion. What does the word apparent mean in apparent visual magnitude? - Answer-How bright the star appears to us, obs...

PHSC 121 Exam Questions All Correctly Answered Why are most of the constellations that were invented in modern times composed of faint stars or located in the southern sky? - Answer -Faint stars or stars in the southern sky were not visible to early astronomers observing from northern latitudes How does the Greek letter designation of a star give you clues both to its location and its apparent brightness? - Answer -The brightest star in a constellation is usually designated as Alpha, the s...

PHSC 121 STUDY GUIDE 2024. Why are most of the constellations that were invented in modern times composed of faint stars or located in the southern sky? - CORRECT ANSWER Faint stars or stars in the southern sky were not visible to early astronomers observing from northern latitudes How does the Greek letter designation of a star give you clues both to its location and its apparent brightness? - CORRECT ANSWER The brightest star in a constellation is usually designated as Alpha, the secon...

PHSC 121 hw 2 Test Questions Fully Answered with All Correct Answers Tonight you see the Moon at midnight at its highest point in your sky. What is the phase of the Moon? - Answer-Full moon You are located in Knoxville, TN, United States. Your friend is located in Lima, Peru. You see a waning gibbous moon in your clear night sky. What phase, if any, will your friend see if the night sky in Lima is also clear? - Answer-waning gibbous Which has the larger angular diameter in the sky—the S...

PHSC 121 - Test 2 (2) Final Exam Study Guide 2024. What is the Synodic period? - CORRECT ANSWER Time it takes the moon to orbit though its phases. It last 29.5 days. What is the sidereal period? - CORRECT ANSWER Time it takes the moon to orbit the earth with respect to the stars. It last 27.3 days Synodal and sidereal period for the moon - CORRECT ANSWER The moons synodal day is longer than the sidereal day because the moon has to catch up to the earth motion around the sun. What i...