astr 101 final exam quizlet
3 min read
When is it easiest to detect a planet in an extrasolar system?
• distance between planet and star It is easiest to detect a planet in an extrasolar planet system when A. a low mass star is far from a high mass planet. B. a high mass star is close to a high mass planet.
astronomy 101 quizlet exam 1
How do the orbits of the planets and the Sun compare?
-The Sun is located slightly off-center from the middle of each planet’s orbit. -All the planets orbit the Sun in nearly the same plane. -Inner planets orbit the Sun at higher speed than outer planets. -Earth is slightly closer to the Sun on one side of its orbit than on the other side.
astronomy 101 quizlet exam 3
Which of the following planets would be in the Sun’s habitable zone?
-Only Mercury would be in the Sun’s habitable zone. -Mercury and Venus would be in the Sun’s habitable zone, but Earth and Mars would not. -Mercury, Venus, and Earth would be in the Sun’s habitable zone, but Mars would not. -All the terrestrial planets would be in the Sun’s habitable zone.
astronomy 101 quizlet exam 1
What is the shape of a comet’s orbit around the Sun?
Never. Each of the four diagrams below represents the orbit of the same comet, but each one shows the comet passing through a different segment of its orbit around the Sun. During each segment, a line drawn from the Sun to the comet sweeps out a triangular-shaped, shaded area.
astronomy 101 quizlet exam 3
Is the Sun a star or a planet?
-The Sun is a star. -The Sun’s diameter is about five times that of Earth. -The Sun contains more than 99 percent of all the mass in our solar system. -The Sun is made mostly of hydrogen and helium.
astronomy 101 quizlet exam 1
When is Venus at its highest point in the sky?
Noon (Because Venus is full when it is on the opposite side of the Sun from Earth, the Sun and Venus both appear to move through the sky together at that time. Venus therefore rises with the Sun, reaches its highest point at noon, and sets with the Sun.) When would a new Venus be highest in the sky?
astronomy 101 quizlet exam 3
What are the characteristics of stars and planets?
-Planets are common, and many or most stars have them. -Only a tiny percentage of stars are surrounded by spinning disks of gas during their formation. -Planets always tend to orbit their star in the same direction and approximately the same plane.
astronomy 101 quizlet exam 1
What is wrong with the shape of the Sun’s orbit?
-There is nothing wrong with this orbit; it is fine as shown. -The shape of the orbit is not an ellipse, as Kepler’s first law requires. The Sun is not at one focus, as Kepler’s first law requires. (Because this ellipse is not a perfect circle, neither of its two foci are at the center of the ellipse.
astronomy 101 quizlet exam 3
What is the evidence for the formation of planets from stars?
-It shows that the disks that encircle stars are sometimes split into two pieces, with one on each side of the star. -It proves that planets form in disks of dust and gas that surround stars.
uwo 2021 important dates
When do classes start and end in 2021-22?
2021-22 Academic Year Classes begin September 8 Fall Reading Week November 1 – 7 Last day to drop a first-term half cours … November 12 Fall/Winter Term classes end December 8 Study Day (s) December 9 15 more rows …
