双语科学站:太阳系

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The Solar System

太阳系

Mercury    Venus    Mars   Jupiter   Saturn   Uranus    Neptune

There are seven other planets that travel around the sun, too. These planets, in order, include Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune. Earth is located between Venus and Mars. The path the planets use when traveling around the sun is oval-shaped and is called its orbit. Each of the planets in the solar system take a different amount of time to orbit or travel around the Sun.

除地球之外,围绕太阳运行的还有7大行星,依次是:水星,金星,火星,木星,土星,天王星,海王星。地球位于金星和火星之间。行星围绕太阳运行的轨迹是椭圆形的、并且每颗行星围绕太阳运行的周期不尽相同。

The solar system is the Sun and the objects that travel around it. The Earth is part of the solar system because it also travels around the sun.

太阳系是太阳以及围绕太阳运行的行星的总称。因为地球围绕太阳运行,所以地球也是太阳系中的一员。

The Sun is a star similar to the other stars in the sky but it is much closer to the Earth. The Sun is mostly a big ball of gases composed mainly of hydrogen and helium.

太阳与天际中的其他恒星相似,但比起其他恒星,地球与太阳近得多。太阳是一个巨大的气体星球,而它主要由氢气和氮气组成。

The planet Earth takes 365 days or one year to orbit the Sun. The other planets take more or less time to orbit the Sun. It takes Mercury less than two months or 88 days to travel around the Sun. It is the shortest time compared to the other planets. The planet taking the longest time to go around the Sun is Neptune. It takes Neptune almost 165 years to travel around the Sun.

地球围绕太阳运行一周的时间是365天。而其他行星的公转周期或长或短。水星的公转周期少于两个月或少于88天,比其他行星的公转周期要短得多。而公转周期最长的是海王星。它绕日一圈的时间长达165年。

The planets of the solar system are also a variety of sizes and are made up of different substances. The largest planet in the solar system is Jupiter. Over 1,000 Earths could fill the size of Jupiter. The smallest planet is Mercury, which is also the closest planet to the Sun. Earth and Venus are similar in size to each other.

太阳系中的行星形状不一,因为它们的组成物质都是不一样的。太阳系中最大的行星是木星。1000个地球才差不多等同于一个木星的大小。最小的行星是水星,而水星也是最靠近太阳的行星。地球和金星的大小相似。

The four inner planets, Mercury, Venus, Earth, and Mars are made of rock containing many different minerals. The four outer planets, Jupiter, Saturn, Uranus, and Neptune are mostly made up of different gases. Jupiter is mainly helium, hydrogen, and water. The four outer planets also have rings that encircle them with Saturn having the most rings.

靠近太阳的四颗内行星:水星、金星、地球、火星都是由富含不同矿物质的岩石组成。而四颗外行星:木星、土星、天王星、海王星,它们都是由不同的气体组成。木星主要由氦气、氢气和水组成。四颗外行星都有光环围绕,而土星的光环是最大的。

Other objects in space include the moons of six planets. A moon is a celestial object (object in space) that orbits another body in space. There are approximately 173 moons throughout the solar system. Earth has a single moon, Mercury and Venus have none, and the planet with the most moons is Jupiter with 63. Not far behind Jupiter is Saturn with 62 moons.

除此之外,太阳系还包括了6颗行星的卫星。天然卫星是围绕行星运行的天体。在太阳系中有接近173颗卫星。地球只有一个月球,水星和金星没有,而天然卫星最多的行星是木星,有63个卫星、而次于木星的就是土星,有62个卫星。

The asteroid belt is another object in the solar system. The asteroid belt is approximately located between the orbits of the planets Mars and Jupiter. The asteroid belt contains irregularly shaped bodies called asteroids which are believed to be left over from the beginning of the solar system 4.6 billion years ago. The objects are rocky and irregular in shape, and some may be hundreds of miles across, but most of the asteroids are very small.

小行星带是太阳系介于火星和木星轨道之间,由很多形状不规则的小行星组成,而这些小行星为认为是4.6亿年前原始太阳系的遗留物。这些小行星由岩石组成,并且形状不规则。纵使有的直径长达几百英里,但是大部分小行星是很小的。

In summary, the solar system is the Sun and the objects that travel around it including the eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each of the planets follow an oval-shaped path around the Sun which is called the planet's orbit. Many of the planets also have moons which are celestial objects that orbit another body in space. Finally, there is also an asteroid belt located between Mars and Jupiter containing irregularly shaped objects called asteroids.

本课小结:太阳系就是太阳和围绕太阳运行的8颗行星:水星、金星、地球、火星、木星、土星、天王星、海王星的总称、每一颗行星都以椭圆形绕日运行,这样的椭圆轨被称作为行星轨道。很多行星也有自己的卫星,也就是绕行星运行的另一种天体。最后,在火星和木星之间还有一群形状不规则的小行星密集区域被称作为小行星带。

1) The Sun and the objects that travel around it is called

A: planets   B: The solar system

C: Moons   D: The asteroid belt

2) What is the difference between the Sun and the other stars of the universe?

A: The sun is much farther away   B: The sun shines brighter

C: The sun is closer to the Earth   D: The sun is much larger

3) Which of the following shows the correct order of the inner planets?

A: Mercury, Earth, Venus, Mars   B: Mars, Mercury, Venus, Earth

C: Venus, Mars, Erath, Mercury   D: Mercury, Venus, Earth, Mars

4) Which of the following the correct order of the outer planets?

A: Jupiter, Saturn, Neptune, Uranus   B: Jupiter, Saturn, Uranus, Neptune

C: Saturn, Jupiter, Uranus, Neptune   D: Jupiter, Uranus, Neptune, Saturn

5) Which of the following is the definition of an asteroid?

A: Irregularly shaped bodies which are believed to be left over from the beginning of the solar system

B: Celestial objects that orbits another body in space

C: Similar to stars in the sky but they are much closer to the Earth

D: The name of the rings encircling several planets of the solar system

6) Which of the following shows the smallest and largest planets of the solar system?

A: Mercury and Saturn   B: Venus and Earth

C: Mercury and Jupiter   D: Saturn and Jupiter

         

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