Mercury is the smallest terrestrial planet in the solar system‚ about a third of the size of Earth It has a thin atmosphere‚ which causes it to swing between burning and freezing temperatures Mercury is also a dense planet‚ composed mostly of iron and nickel with an iron core Its magnetic field is only about 1 percent that of Earth’s The surface of Mercury is similar to that of the Moon; it has many deep craters and is covered by a thin layer of tiny particle silicates The surface temperature
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food‚ drink‚ the air I breathe‚ and the products that touch my skin—my own secret stash of compounds acquired by merely living. It includes older chemicals that I might have been exposed to decades ago‚ such as DDT and PCBs; pollutants like lead‚ mercury‚ and dioxins; newer pesticides and plastic ingredients; and the near-miraculous compounds that lurk just beneath the surface of modern life‚ making
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Lecture 13 Lunar Eclipse * An eclipse in which the moon passes into the shadow of the Earth * Umbra: the portion of the shadow that receives no direct sunlight from the light source * Penumbra: the portion of a shadow that receives direct light from only part of the light source * Eclipse season: the time of year during which a solar or lunar eclipse is possible Types of Lunar Eclipses * Penumbral Lunar Eclipse: an eclipse where the moon passes through the earth’s penumbra‚
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mixture of mercury with at least one other metal. The amalgam filling has been used for restorative method for many years due to its low cost‚ durability‚ ease of application‚ strength and bacteriostatic effects. The environmental concerns are regarding mercury emissions during preparation and from waste amalgam upon cremation of deceased individuals. Amalgam filling: Dental Amalgam is the most commonly used restorative material used for dental fillings. This contains a mixture of mercury with at
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solar system are Mercury‚ Venus‚ Earth‚ Mars‚ Jupiter‚ Saturn‚ Uranus‚ Neptune and Pluto. There are also many other minor planets‚ which are also in our solar system‚ but they are unimportant compared to the nine major planets. Mercury‚ which is the planet that is closest to the sun‚ is the first and smallest of the inner planets. It is speculated that the heat from the sun made it impossible for the gases present to become part of the planetary formation. The surface of Mercury is extremely hot
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Chapter 14 Section 2 Notes: The Sun The sun produces energy through nuclear fusion. In the process of nuclear fusion‚ two atomic nuclei combine‚ forming a larger‚ more massive nucleus and releasing energy. Within the sun‚ hydrogen atoms join together to form helium. Such conditions exist in the sun’s core‚ or central region. The sun’s interior consists of the core‚ the radiation zone‚ and the convection zone. The sun’s energy is produced in its central core. The radiation zone is a region
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Value: Appreciation of Planets. II. Subject Matter: UNIT: Beyond the Solar System TOPIC: Planets A. Science Concept: Planets are the large celestial bodies which revolve around the sun in closed elliptical paths called orbits. Mercury‚ Venus‚ Earth and Mars are inner planets. Jupiter‚ Saturn‚ Uranus‚ and Neptune are outer planets. B. Science Processes: Communicating‚ Describing‚ Inferring C. Materials: Laptop‚ OHP‚ pictures‚ charts References: Science Web by
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live on a small planet in a tiny part of a vast universe. "This part of the universe is called the solar system‚ and is dominated by a single brilliant star-the sun." (Skywatching 230) The solar system is the earth ’s neighbourhood and the planets Mercury‚ Venus‚ Mars‚ Jupiter‚ Saturn‚ Uranus‚ Neptune and Pluto are the Earth ’s neighbours. They all have the same stars in the sky and orbit the same sun. Scientists believe the solar system began about 5 billion years ago‚ perhaps when a nearby star
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Observation of Different Photons when Elements are Heated Introduction: The bright line spectrum is the range of colorful lights that are emitted from an atom in its excited state. A “normal” atom‚ or an atom in its ground state‚ is when all of the atom’s electrons are in their proper energy level. When an atom is in its excited state‚ electrons jump to different energy levels making them unstable. As the electron tries to get back to its respective energy level‚ energy is emitted in the form
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Rahu-ketu axis is understood as materialistic planet ‚ basically its planet of science‚ technology and glamour ‚ once can see mix effects of venus and mercury
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