The Solar System
10th Edition
ISBN: 9781337672252
Author: The Solar System
Publisher: Cengage
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Chapter 4, Problem 1SP
To determine
Order Jupiter, Mercury, the Sun, Venus, Mars, Saturn, the stars in the increasing order of distance from Earth according to geo centric model.
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Directions: Complete the given table by finding the ratio of the planet’s time of the revolution to its radius.
Planet
Average
Radius of
Orbit
Times of
Revolution
R3
T2
T2 /R3
Mercury
5.7869 × 1010
7.605 ×106
Venus
1.081 × 1011
1.941 ×107
Earth
1.496 × 1011
3.156 ×107
What pattern do you observe in the last column of data? Which law of Kepler's does this seem to support?
The picture below shows the
model.
Planets
Moon
Earth
SUN
Perihelion
Heliocentric
Aphelion
Geocentric
Solarcentric
Sort the characteristics according to whether they are part of the a cocentric model, the heliocentric
madel, or both solar system models
This model is Sun-centered.
Retrograde motion is explained by the
orbital speeds of planets.
Epicycles and deferents help explain
planetary motion.
This model is Earth-centered.
The brightness of a planet increases
when the planet is closest to Earth.
Planets move in circular orbits and
with uniform motion.
Retrograde motion is explained by
epicycles.
Geocentric
Heliocentric
Both geocentric and heliocentric
Chapter 4 Solutions
The Solar System
Ch. 4 - Prob. 1RQCh. 4 - Why did early human cultures observe astronomical...Ch. 4 - Prob. 3RQCh. 4 - Name one example each of a famous politician,...Ch. 4 - Why did Plato propose that all heavenly motion was...Ch. 4 -
On what did Plato base his knowledge? Was it...Ch. 4 - Which two-dimensional (2D) and three-dimensional...Ch. 4 - Prob. 8RQCh. 4 - In Ptolemys model, how do the epicycles of Mercury...Ch. 4 - Describe in detail the motions of the planets...
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 -
When Tycho observed the new star of 1572, he...Ch. 4 - Assume the night is clear and the Moons phase is...Ch. 4 - Does Tychos model of the Universe explain the...Ch. 4 - Name an empirical law. Why is it considered...Ch. 4 -
How does Kepler’s first law of planetary motion...Ch. 4 - Prob. 19RQCh. 4 - Prob. 20RQCh. 4 - Prob. 21RQCh. 4 - Prob. 22RQCh. 4 - Prob. 23RQCh. 4 - Prob. 24RQCh. 4 - Prob. 25RQCh. 4 - Prob. 26RQCh. 4 - Prob. 27RQCh. 4 - Prob. 1PCh. 4 -
If you lived on Mars, which planets would exhibit...Ch. 4 - Prob. 3PCh. 4 - If a planet has an average distance from the Sun...Ch. 4 - If a space probe is sent into an orbit around the...Ch. 4 - Prob. 6PCh. 4 - An object takes 29.5 years to orbit the Sun. What...Ch. 4 -
One planet is three times farther from the Sun...Ch. 4 - Galileos telescope showed him that Venus has a...Ch. 4 - Which is the phase of Venus when it is closest?...Ch. 4 - Prob. 11PCh. 4 - Prob. 1SPCh. 4 - Prob. 2SPCh. 4 - Prob. 1LLCh. 4 - Prob. 2LLCh. 4 - What three astronomical objects are represented...Ch. 4 - Use the figure below to explain how the Ptolemaic...
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- Arrange the following in order of increasing distance from Earth according to the geocentric model of the Universe: Jupiter, Mercury, the Sun, Venus, Mars, Saturn, the starsarrow_forwardThe planet Saturn has a mass of 5.68×10^26 kg and a radius of 58,200 km. Janus, a moon of Saturn, has a mass of 1.9×10^18 kg and it orbits Saturn a distance of 151,400 km from the center of Saturn. - How many hours does it take for Janus to orbit Saturn?arrow_forwardExplain the geocentric view of the universe.arrow_forward
- A planet orbits the Sun every 539.4 years. What is its distance (semi-major axis of the orbit) from the Sun? (Give your answer in SI units and include the unit.)arrow_forwardWhich of the following is true in our solar system? 1. The planets travel in a circular path, with the sun being in the very center. 2. The planets travel in an elliptical path, with the sun being in the very center. 3. The planets travel in an elliptical path, with the sun at one of the focus points. 4. The planets travel in a helical path, with the sun located along the central axis.arrow_forwardAs an aspiring science fiction author, you are writing about a space-faring race and their home planet, Krypton, which has one moon. This moon takes 1,702,948 seconds to complete an orbit around Krypton. If the distance from the center of the moon to the surface of Krypton is 462.5 x 106 m and the planet has a radius of 37.2 x 106 m, calculate the moon's centripetal acceleration. Your Answer: Answerarrow_forward
- The day on Mars is 1.026 Earth-days long. The martian year lasts 686.98 Earth-days. The two moons of Mars take 0.32 Earth-day (for Phobos) and 1.26 Earth-days (for Deimos) to circle the planet. You are given the task of coming up with a martian calendar for a new Mars colony. Would a solar or lunar calendar be better for tracking the seasons?arrow_forwardGive four ways to demonstrate that Earth is spherical.arrow_forwardWhich of the following statements is false? (17.2) (a) The Moon rotates and revolves westward. (b) The orbital plane of the Moon is tilted about 5 to the Earths orbital plane. (c) The difference between the sidereal and synodic months is about 2 days. (d) The Moon revolves in an elliptical orbit.arrow_forward
- Imagine you are a travel agent in the next century. An eccentric billionaire asks you to arrange a “Guinness Book of Solar System Records” kind of tour. Where would you direct him to find the following (use this chapter and Appendix F and Appendix G): A. the least-dense planet B. the densest planet C. the largest moon in the solar system D. excluding the jovian planets, the planet where you would weigh the most on its surface (Hint:Weight is directly proportional to surface gravity.) E. the smallest planet F. the planet that takes the longest time to rotate G. the planet that takes the shortest time to rotate H. the planet with a diameter closest to Earth’s I. the moon with the thickest atmosphere J. the densest moon K. the most massive moonarrow_forwardEarth has an orbital period of 365 days and its mean distance from the sun is 1.495×108 km. The planet pluto's mean distance from the sun is 5.896×109 km. Using kepler's third law, calculate pluto's orbital period in earth days.arrow_forwardAssume that the planet's orbit is circular of radius R = 130 × 106 km and planet's period is T = 30 × 10° s. What is the magnitude of the vector J = r x r' (in units of square kilometers per second)? (Use decimal notation. Give your answer to three decimal places.) ||J|| = x10° km²/s Find the rate at which the planet's radial vector sweeps out area in units of square kilometers per second. (Use decimal notation. Give your answer to three decimal places.) dA x10° km²/s dtarrow_forward
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