EP CONCEPTUAL PHYSICAL SCI.-MOD.MASTER.
6th Edition
ISBN: 9780134091983
Author: Hewitt
Publisher: PEARSON CO
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Textbook Question
Chapter 26, Problem 1RCQ
How many known planets are in our solar system?
Expert Solution & Answer
To determine
The total number of planets in solar system.
Explanation of Solution
Solar system consists of innumerous bodies or objects that bound to the sun through gravitational force between the sun and object or body.
Since 2005 in solar system there were 9 planets including Pluto and later it is found that Pluto is not a planet it is a dwarf. Dwarf planets are collection of minute planets. The main reason is that the Pluto used to orbit on the path which is outer edge of the solar system.
Since 2006 the planet Pluto downgraded from the status of planet to dwarf from the solar system planet group. Thus till now there are only eight planets and their respective moon consisting the solar system planet group.
Conclusion:
Therefore, there are eight planets in the solar system.
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Chapter 26 Solutions
EP CONCEPTUAL PHYSICAL SCI.-MOD.MASTER.
Ch. 26 - How many known planets are in our solar system?Ch. 26 - What dwarf planet was downgraded from planetary...Ch. 26 - How are the outer planets different from the inner...Ch. 26 - Why does a nebula spin faster as it contracts?Ch. 26 - According to the nebular theory, did the planets...Ch. 26 - Prob. 6RCQCh. 26 - What are sunspots?Ch. 26 - What is the solar wind?Ch. 26 - How does the rotation of the Sun differ from the...Ch. 26 - Prob. 10RCQ
Ch. 26 - Why are the days on Mercury very hot and the...Ch. 26 - What two planets are evening or morning stars?Ch. 26 - Why is Earth called the blue planet?Ch. 26 - What gas makes up most of the Martian atmosphere?Ch. 26 - What evidence tells us that Mars was at one time...Ch. 26 - What surface feature do Jupiter and the Sun have...Ch. 26 - Which move faster: Saturns inner rings or the...Ch. 26 - How tilted is Uranuss axis?Ch. 26 - Why is Nepcune bluer than Uranus?Ch. 26 - Why doesnt the Moon have an atmosphere?Ch. 26 - Where is the Sun located when you view a fall...Ch. 26 - Where are the Sun and the Moon located at the time...Ch. 26 - Why dont eclipses occur monthly, or nearly...Ch. 26 - How does the Moons rate of rotation about its own...Ch. 26 - Between the orbits of what two planets is the...Ch. 26 - What is the difference between a meteor and a...Ch. 26 - What is the Kuiper belt?Ch. 26 - What is the Oort cloud, and what is it noted for?Ch. 26 - Prob. 29RCQCh. 26 - What causes comet tails to point away from the...Ch. 26 - Knowing that the speed of light is 300,000 km/s,...Ch. 26 - How many days does sunlight take to travel the...Ch. 26 - The light-year is a standard unit of distance used...Ch. 26 - The nearest star to our Sun is Alpha Centauri,...Ch. 26 - If the Sun were the size of a beach ball, Earth...Ch. 26 - Rank these planets in order from longest to...Ch. 26 - Rank these planets in order of increasing number...Ch. 26 - Rank in order of increasing average density: (a)...Ch. 26 - Rank in order of increasing pressure at the center...Ch. 26 - Rank in order of decreasing number of people who...Ch. 26 - Rank in order of increasing average distance from...Ch. 26 - According to the nebular theory, what happens to a...Ch. 26 - Prob. 49ECh. 26 - When a contracting ball of hot gas spins into a...Ch. 26 - If Earth didnt spin on its axis but still revolved...Ch. 26 - If Earth didnt spin on its axis but still revolved...Ch. 26 - Which tends to be larger: a star or a nebula?...Ch. 26 - Prob. 54ECh. 26 - Prob. 55ECh. 26 - Prob. 56ECh. 26 - Explain why the radiation zone is more dense than...Ch. 26 - Explain how energy is transported from the Sun's...Ch. 26 - Explain how energy is transported outward through...Ch. 26 - The greenhouse effect is very pronounced on Venus...Ch. 26 - What is the cause of winds on Mars (and also on...Ch. 26 - Why is there so little wind on the surface of...Ch. 26 - If Venus were somehow transported into the...Ch. 26 - Mercury and Venus are never seen at night straight...Ch. 26 - As evidenced in the photos that make up Figure...Ch. 26 - What is the major difference between the...Ch. 26 - What does Jupiter have in common with the Sun that...Ch. 26 - When it comes to celestial bodies,such as planets...Ch. 26 - Why are the seasons on Uranus different from the...Ch. 26 - Do all moons orbit in the same direction as the...Ch. 26 - Earth rotates much faster than Venus. How does the...Ch. 26 - Why are many craters evident on the surface of the...Ch. 26 - Why is there no atomosphere on the Moon? Defend...Ch. 26 - Is the fact that we see only one side of the Moon...Ch. 26 - Photograph (a) shows the Moon partially lit by the...Ch. 26 - We always see the same face of the Moon because...Ch. 26 - Since we never see the back side of the Moon,...Ch. 26 - In what alignment of Sun, Moon, and Earth does a...Ch. 26 - In what alignment of Sun, Moon, and Earth does a...Ch. 26 - What does the Moon have in common with a compass...Ch. 26 - If you were on the Moon and you looked up and saw...Ch. 26 - If you were on the Moon and you looked up and saw...Ch. 26 - Earth takes 365.25 days to revolve around the Sun....Ch. 26 - Astronomer using land-based telescopes must...Ch. 26 - Nearly everybody has witnessed a lunar eclipse,...Ch. 26 - Because of Earth's shadow, a partially eclipsed...Ch. 26 - Use the following illustration to answer questions...Ch. 26 - Use the following illustration to answer questions...Ch. 26 - Use the following illustration to answer questions...Ch. 26 - Use the following illustration to answer questions...Ch. 26 - In what sense is Pluto a potential comet?Ch. 26 - Smaller chunks of asteroids are sent hurling...Ch. 26 - Why are meteorites so much more easily found in...Ch. 26 - A meteor is visible only once, but a comet may be...Ch. 26 - What would be the consequence of a comets tail...Ch. 26 - Chances are about 50-50 that in any night sky,...Ch. 26 - If the bulk of water on Earth didnt come from...Ch. 26 - Consider what human civilization would be like if...Ch. 26 - What are the chances that microbial life forms...Ch. 26 - Prob. 100DQCh. 26 - Prob. 1RATCh. 26 - The solar system is like an atom in that both (a)...Ch. 26 - The nebular theory is based on the observation...Ch. 26 - When a contracting hot ball of gas spins into a...Ch. 26 - Each second, the burning Sun's mass (a) increases....Ch. 26 - Compared to your weigh on Earth, your weight on...Ch. 26 - When the Moon assumes its characteristic thin...Ch. 26 - When the Sun passes between the Moon and Earth, we...Ch. 26 - Asteroids orbit (a) the Moon. (b) Earth. (c) the...Ch. 26 - With each pass of a comet about the Sun, the...
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