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    Презентация к уроку по окружающему миру (1 класс) по теме:
    "Планеты солнечной системы". Презентация - ознакомление. 1 класс.

    Данная презентация для многих ребят - первое знакомство с планетами солнечной системы.

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    Планеты Солнечной Системы

    1 класс

    Составитель: Мизга Ольга Борисовна


    * a solar system is a star with orbiting bodies

    *Our star, Sol, has nine planets orbiting it

    *The inner solar system contains the sun, Mercury, Venus, Earth and Mars

    *The outer solar system contains Jupiter, Saturn, Uranus, Neptune and Pluto

    *The planets orbit (go round) the sun in ellipses. The time this takes is a planetary year

    *A planet is a major body that circles the sun. Smaller bodies orbiting the sun are called planetoids. Other bodies that orbit the sun include comets and asteroids

    *The planets all rotate about the sun in the same direction (counter-clockwise)

    *The planets of the sun all orbit in about the same plane

    *The inner planets are small and mostly composed of rock and iron

    *The outer planets (except Pluto) are large and mostly composed of gas (hydrogen and helium) and ice

    *One theory says that all the planets were formed at the same time from a condensing cloud of gas that also formed the sun.

    *We have recently found planets orbiting other stars

    Меркурий

    Mercury

    *Mercury is the closest planet to the sun.

    *One Astronmical Unit = 150 million kilometres. Mercury is 0.387 AU from the sun

    *It is the second- smallest planet

    *It orbits the sun in 87 days

    *It takes 59 days for Mercury to spin on its axis

    *It weighs only 6% of what the Earth masses

    *It is about 38% the diameter of the Earth

    *The surface temperature ranges from 100oK to 543oK (-173oC to over 270oC)

    *It has no moons

    *It is named after the Winged Messenger to the gods

    *It is mostly made of iron

    *It has very little atmosphere

    *Mercury has many craters - it has been hit many times by meteorites, espcially early in its history

    *The first man-made satellite to send back pictures of Mercury was called Mariner 10







    Венера

    Venus

    *Venus is the second-closest planet from the sun

    *It is usually 0.72 AU from the sun

    *It is the sixth-largest planet

    *It orbits the sun in 224.7 days

    *It spins on its axis in the *opposite* direction to Earth (counter-revolutionary) and this takes 243 days

    *It masses about 82% of the Earth's mass

    *The surface temperature is about 462oC - the hottest planet in the solar system

    *It has no moons

    *It is named after the goddess of love

    *It is mostly made of iron

    *It has an atmosphere of sulfuric acid and carbon dioxide that has produced a "greenhouse effect"

    *We can see the surface of Venus by using radar images

    *It was first visited by Mariner 2 in 1962

    *The USSR's Venera 7 landed on Venus and was the first probe to land on another planet

    *Venus is easily seen from Earth and is the brightest object in the sky. It is often wrongly called the "morning star" or "evening star"

    *It is often called Earth's sister planet because the two planets are so similar in size. The mystery is why the turned out so differently.




    Земля

    Earth

    *The Earth is the third closest planet to the sun

    *Earth is one astronomical unit away from the sun

    *It orbits the sun in 365.25 days

    *It takes 24 hours for Earth to rotate on its axis

    *It weighs 5.98 x 10^24kg

    *It is 12 800kms wide

    *The surface temperature varies between -88oC and 58oC

    *It has one moon - "Luna"

    *It has an atmosphere of nitrogen, oxygen and argon

    *Earth is the only known planet to support life as we know it

    *It has abundant water on the surface

    *It is where we live!

    *This photo was taken by Apollo 17 in 1972 - you can see Africa and Arabia and Antartica. Australia would be to the far right.

    Марс

    Mars

    *Mars is the last planet of the inner solar system

    *It is the fourth planet from the sun

    *It is usually 1.524 Au from the sun

    *It takes 1.9 earth years to orbit the sun

    *It takes 24.5 hours to spin on its axis

    *It masses about 11% of the Earth

    *It is 53% as wide as the Earth

    *The surface temperature ranges between -140oC and 20oC

    *It has two moons - Phobos and Deimos

    *It is named after the god of war

    *It has a thin atmosphere of carbon dioxide (95%),nitrogen, argon and water

    *Its low density probably relates to a core of iron and iron sulfide

    *It may have had running water at some time in the past

    *It may have liquid water on the surface now (this is a point of much investigation)

    *The polar caps are made of solid carbon dioxide

    Юпитер

    Jupiter

    *Jupiter is the fifth planet of the solar system. It is the first planet of the outer solar system

    *It is 5.20 AU from the sun

    *It orbits the sun in 12 years

    *It rotates about its axis in 10 hours

    *It masses more than twice all the other planets combined, 320 times that of Earth

    *Its diameter is 1300 times that of Earth

    *It has a gaseous surface

    *It has at least sixteen moons and a minor ring system. The moons are mostly named after Zeus (Jupiter's) lovers

    *It is named after the King of the Gods, ruler of Olympus and patron of the Roman states

    *It is mostly made of about 90% hydrogen and 10% helium (by numbers of atoms, 75/25% by mass) with traces of methane, water, ammonia and "rock"

    *It may have a core of rocky material. Most of the plaet is probably liquid metallic hydrogen

    *1n 1994 a comet (Shoemaker-Levy) crashed into Jupiter -- the debris could be seen easily with a telescope

    *The Great Red Spot (GRS) discovery is usually attributed to Cassini, or Robert Hooke in the 17th century.

    *The GRS is an oval about 12,000 by 25,000 km, big enough to hold two Earths.

    * Infrared observations and the direction of its rotation indicate that the GRS is a high-pressure region whose cloud tops are significantly higher and colder than the surrounding regions.

    Сатурн

    Saturn

    *Saturn is the sixth planet from the sun

    *It is 9.54 AU from the sun

    *It orbits the sun in 29.5 years

    *It takes 11 hours for Saturn to spin on its axis

    *It weighs 95 times that of the Earth

    *It is 9.42 times wider than the Earth

    *It has a gaseous surface.

    * Saturn's interior is hot (12000 K at the core)

    *It is named after Zeus' father, the god of agriculture

    *Saturn has 18 named moons

    *It has the best developed ring system in the Solar sytem

    *The rings were discovered by Gallileo using an early telescope

    *The rings are very thin - ony 1.5km wide




    Уран

    Uranus

    *Seventh planet from the sun

    *19.218 AU from the sun

    *Orbits the sun in 84 years

    *Rotates on its axis over 17 hours

    *Third largest planet

    *Mass 14.5 x Earth

    *Radius is 4.1 that of Earth

    *It has a ring system and 21 known moons. The moons are named after Shakespearean characters.

    *It is named after the ancient Greek deity of the heavens

    *It is the first planet to be discovered in modern times -- by Herschel

    *It has been visited by only one spacecraft - Voyager II

    *Uranus rotates about an axis parallel to the ecliptic -- this is very unusual

    *Uranus is composed primarily of rock and various ices, with only about 15% hydrogen and a little helium * Uranus (and Neptune) are in many ways similar to the cores of Jupiter and Saturn minus the massive liquid metallic hydrogen envelope.

    * It appears that Uranus does not have a rocky core like Jupiter and Saturn but rather that its material is more or less uniformly distributed.




    * Uranus' atmosphere is about 83% hydrogen, 15% helium and 2% methane.







    Нептун

    Neptune

    *Neptune is usually the 8th planet from the sun. Its orbit intersects with that of Pluto so occasionally it is the most distant planet

    *It is usually 30 AU from the sun

    *It orbits the sun over 165 years

    *It rotates about its axis over 16 hours

    *It masses 17x that of the Earth

    *Its radius is 3,88 x that of the Earth

    *It has a ring system and 8 known moons; 7 small ones and Triton.

    *It is named after the god of the sea

    *Neptune's blue color is largely the result of absorption of red light by methane in the atmosphere but there is some additional as-yet-unidentified chromophore which gives the clouds their rich blue tint.

    *Neptune has been visited by Voyager 2 and observed by the Hubble Space Telescope

    *Neptune's Great Dark Spot disappeared

    Плутон и Харон

    Pluto and Charon

    *Pluto is the furthest planet from the sun.

    *It has a satellite - Charon - that is almost as big as it -- some people call Pluto and Charon together a "double planet"

    *They orbit the sun every 248 years

    *Pluto has an eccentric axis which it rotates around each 6.5 days

    *It has a surface temp of- 230oC

    *Little is known about its atmosphere

    *It is 2400km in diameter

    *It is the smallest planet

    *It is hard to calculate the individual masses of Pluto and Charon

    *It is named after the god of the Underworld

    *It was discovered by Percival Lowell

    *It is the only planet not yet visited by a human spacecraft