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The Solar System By Barbara Thomas
The Sun The Sun is a , a hot ball of glowing gases at the heart of our . The sun is the closest star to , at a mean distance from our of 149.60 million km. This distance is known as an unit, and sets the scale for measuring all across our solar system. The sun a huge sphere of mostly gas, supports life here on Earth. The connection and interactions between the sun and earth drive the , , and . Answers Climate, Planet, Star, Ocean Currents, Earth, Solar System, Weather, Distances, Astronomical and Seasons. Click For Answers
The Moon Fill in the blank. Our moon makes a more livable planet by our home planet's wobble on its , leading to a relatively , and creating a that has guided humans for of years. Answers RHYTHM, EARTH, THOUSANDS, AXIS and STABLE CLIMATE. Click For Answers
The Planets Put the planets together in order from closest to the sun to the farthest from the sun. A. Saturn B. Mars C. Venus D. Neptune E. Pluto F. Uranus G. Earth H. Jupiter I. Mercury 1. 2. 3. 4. 5. 6. 7. 8. 9. Click For Answers
Mercury Mercury ______ orbit takes the small planet as close as 47 million km and as far as 70 million km from the sun. If one could stand on the ________ surface of Mercury when it is at its closest point to the sun, our star would _______ more then ______ times as large as it does when viewed from Earth. _________ on Mercury's surface can reach 800 degrees Fahrenheit. Mercury speeds around the sun every 88 days, _________ through space at nearly 50 km per ________ ~ faster then any other planet. Answers SECOND, APPEAR, ELLIPTICAL, THREE, TRAVELING, TEMPERATURES and SCORCHING. Click For Answers
Venus The Venusian year is about _____ Earth days long, while the planet's rotation period is ______ Earth days, making a Venus day about _____ Earth days long. Resulting from this slow rotation Venus cannot generate a _____ _____ similar to Earth's ~ though its core iron content is similar to that of the Earth. Venus rotates _____ compared with Earth's _____ rotation. Venus' atmosphere consists mainly of _____ _____, with clouds of sulfuric acid droplets. Only trace amounts of _____ have been detected in the atmosphere. The thick atmosphere traps the sun's heat, resulting in _____ temperatures higher then _____ degrees Fahrenheit. Answers WATER, SURFACE, 225, PROGRADE, MAGNETIC FIELD, 117, CARBON DIOXIDE, 880, RETROGRADE and 243. Click For Answers
Earth Earth, our home planet, is the only _____ in our _____ _____ known to harbor life: life that is _____ diverse. All the things we need to survive exist under a thin layer of _____ that separates us from the cold, _____ void of space. Earth is made up of complex, _____ _____ that creates a constantly changing world that we are _____ to _____. Answers AIRLESS, INTERACTIVE SYSTEM, ATMOSPHERE, STRIVING, SOLAR SYSTEM, INCREDIBLY, UNDERSTAND and PLANET. Click For Answers
Mars Mars is a rocky body about _____ the size of Earth. As with the other _____ planets ~ Mercury, Venus and Earth ~ the surface of Mars has been altered by _____, impacts, crustal movement and atmospheric effects such as _____ _____. Mars has two moons, _____ and Deimos, that may be captured _____. Potato-shaped, they have too little mass for _____ to make them spherical. _____, the innermost moon, is heavily cratered, with _____ _____ on its surface. Answers PHOBOS, TERRESTRIAL, ASTEROIDS, HALF, PHOBOS, DUST STORM, GRAVITY, DEEP GROVES and VOLCANISM. Click For Answers
Jupiter Jupiter is the most massive planet in our _____ _____; with four large moons and many _____ moons it forms a kind of _____ solar system. In fact, Jupiter resembles a star in _____, and if it had been about 80 times _____ _____, it would have become a _____ rather then a _____. Answers COMPOSITION, SMALLER, SOLAR SYSTEM, STAR, PLANET,MINIATURE and MORE MASSIVE. Click For Answers
Saturn Saturn was the most _____ of the five planets known to the ______. Like Jupiter, Saturn is made mostly of _____ and _____. Its volume is 775 times greater then tat of Earth. _____ in the upper _____ reaches 500 m per seconds in the _____ region. The super-fast _____, combined with _____ rising from within the planets _____, cause the yellow and gold bands visible in the _____. Answers ATMOSPHERE, WINDS, HYDROGEN, EQUATIONAL, HEAT, ATMOSPHERE, HELIUM, WINDS, ANCIENTS, INTERRIOR and DISTANT. Click For Answers
Uranus Uranus discovered in 1781 by astronomer William Harschel was the _____ planet _____ with the aid of a telescope. As the _____ planet from the sun, Uranus takes 84 Earth years to complete one _____. Uranus is one of the two _____ _____ of the outer solar system. Uranus' _____ is mostly _____ and _____, with a small amount of _____ and traces of _____ and _____. Uranus gets it blue-green color from _____ gas in the _____. Answers METHANE, ATMOSPHERE, ICE GIANT, FOUND, SEVENTH, HYDROGEN, ATMOSPHERE, HELIUM, WATER, FIRST, ORBIT, METHANE and AMMONIA. Click For Answers
Neptune The _____ _____ Neptune was the _____ planet located through mathematical _____ rather than through regular _____ of the sky. Nearly 4.5 _____ km from the sun, Neptune orbits the sun _____ every 165 years. It was _____ to the naked eye because of its _____ distance from Earth. The main axis of Neptune's ______ field is tipped over by about 47 _____ compared with the planet's _____ _____. Answers DEGREES, INVISIBLE, ROTATION AXIS, ICE GIANT, OBSERVATIONS, ONCE, FIRST, PREDICTIONS, MAGNETIC, BILLION and EXTREME. Click For Answers
Pluto Pluto is classified as a _____ planet and is also a member of a group of _____ that orbit in a disc-like _____ beyond the orbit of _____ called the Kuiper Belt. This distant realm is populated with _____ of miniature _____ worlds, which formed early in the _____ of our solar system. Pluto is two-thirds the _____ of Earth's moon and probably has a rocky core _____ by a mantle of _____ _____. Answers WATER ICE, ICY, DIAMETER, THOUSANDS, OBJECTS, HISTORY, ZONE, DWARF, NEPTUNE and SURROUNDED. Click For Answers
STARS A star is a of gas held together by its own . The force of the is continually trying to cause the star to , but this is by the pressure of and/or radiation in the stars . This is called . Answers INTERIOR, COLLAPSE, SPHERE, GRAVITY, HOT GAS, COUNTERACTED, HYDROSTATIC SUPPORT, and GRAVITY. Click For Answers
The Sun The Sun is a STAR, a hot ball of glowing gases at the heart of our SOLARSYSTEM. The sun is the closest star to EARTH, at a mean distance from our PLANET of 149.60 million km. This distance is known as an ASTRONOMICAL unit, and sets the scale for measuring DISTANCES all across our solar system. The sun a huge sphere of mostly IONIZED gas, supports life here on Earth. The connection and interactions between the sun and earth drive the SEASONS, OCEAN CURRENTS, WEATHER and CLIMATE. Click To Return
The Moon Fill in the blank. Our moon makes EARTH a more livable planet by MODERATING our home planet's wobble on its AXIS, leading to a relatively STABLECLIMATE, and creating a RHYTHM that has guided humans for THOUSANDSof years. Click To Return
The Planets Put the planets together in order from closest to the sun to the farthest from the sun. 1. I 2. C 3. G 4. B 5. H 6. A 7. F 8. D 9. E Click To Return
Mercury Mercury ELLIPTICAL orbit takes the small planet as close as 47 million km and as far as 70 million km from the sun. If one could stand on the SCORCHING surface of Mercury when it is at its closest point to the sun, our star would APPEAR more then THREE times as large as it does when viewed from Earth. TEMPERATURES on Mercury's surface can reach 800 degrees Fahrenheit. Mercury speeds around the sun every 88 days, TRAVELING through space at nearly 50 km per SECOND ~ faster then any other planet. Click To Return
Venus The Venusian year is about 225 Earth days long, while the planet's rotation period is 243 Earth days, making a Venus day about 117 Earth days long. Resulting from this slow rotation Venus cannot generate a MAGNETIC FIELD similar to Earth's ~ though its core iron content is similar to that of the Earth. Venus rotates RETROGRADE compared with Earth's PROGRADE rotation. Venus' atmosphere consists mainly of CARBON DIOXIDE, with clouds of sulfuric acid droplets. Only trace amounts of WATER have been detected in the atmosphere. The thick atmosphere traps the sun's heat, resulting in SURFACE temperatures higher then 880 degrees Fahrenheit. Click To Return
Earth Earth, our home planet, is the only PLANET in our SOLAR SYSTEM known to harbor life: life that is INCREDIBLY diverse. All the things we need to survive exist under a thin layer of ATMOSPHERE that separates us from the cold, AIRLESS void of space. Earth is made up of complex, INTERACTIVE SYSTEM that creates a constantly changing world that we are STRIVING to UNDERSTANDING. Click To Return
Mars Mars is a rocky body about HALF the size of Earth. As with the other TERRESTRIAL planets ~ Mercury, Venus and Earth ~ the surface of Mars has been altered by VOLCANISM, impacts, crustal movement and atmospheric effects such as DUST STORMS. Mars has two moons, PHOBOS and Deimos, that may be captured ASTEROIDS. Potato-shaped, they have too little mass for GRAVITY to make them spherical. PHOBOS, the innermost moon, is heavily cratered, with DEEP GROVES on its surface. Click To Return
Jupiter Jupiter is the most massive planet in our SOLAR SYSTEM; with four large moons and many SMALLER moons it forms a kind of MINIATURE solar system. In fact, Jupiter resembles a star in COMPOSITION, and if it had been about 80 times MORE MASSIVE, it would have become a STAR rather then a PLANET. Click To Return
Saturn Saturn was the most DISTANT of the five planets known to the ANCIENTS. Like Jupiter, Saturn is made mostly of HYDROGEN and HELIUM. Its volume is 775 times greater then tat of Earth. WINDS in the upper ATMOSPHERE reaches 500 m per seconds in the EQUATIONAL region. The super-fast WINDS, combined with HEAT rising from within the planets INTERIOR, cause the yellow and gold bands visible in the ATMOSPHERE. Click To Return
Uranus Uranus discovered in 1781 by astronomer William Harschel was the FIRST planet FOUND with the aid of a telescope. As the SEVENTH planet from the sun, Uranus takes 84 Earth years to complete one ORBIT. Uranus is one of the two ICE GIANT of the outer solar system. Uranus' ATMOSPHERE is mostly HYDROGEN and HELIUM, with a small amount of METHANE and traces of WATER and AMMONIA. Uranus gets it blue-green color from METHANE gas in the ATMOSPHERE. Click To Return
Neptune TheICE GIANTNeptune was theFIRSTplanet located through mathematicalPREDICTIONSrather than through regularOBSERVATIONSof the sky. Nearly 4.5BILLIONkm from the sun, Neptune orbits the sunONCEevery 165 years. It wasINVISIBLEto the naked eye because of itsEXTREMEdistance from Earth. The main axis of Neptune'sMAGNETICfield is tipped over by about 47DEGREEScompared with the planet'sROTATION AXIS. Click To Return
Pluto Pluto is classified as a DWARF planet and is also a member of a group of OBJECTS that orbit in a disc-like ZONE beyond the orbit of NEPTUNE called the Kuiper Belt. This distant realm is populated with THOUSANDS of miniature ICY worlds, which formed early in the HISTORY of our solar system. Pluto is two-thirds the DIAMETER of Earth's moon and probably has a rocky core SURROUNDED by a mantle of WATER ICE. Click To Return
STARS A star is a SPHERE of gas held together by its own GRAVITY. The force of the GRAVITY is continually trying to cause the star to COLLAPSE, but this is COUNTERACTED by the pressure of HOTGAS and/or radiation in the stars INTERIOR. This is called HYDROSTATICSUPPORT. Click To Return