COMETS, ASTEROID, AND METEORITE

• Science Quarter 2 – Module 6: Comets, Meteors, and Asteroids is a module prepared by the Department of Education for Grade 8 students.
• Borrowed materials included in the module are owned by their respective copyright holders.
• Asteroids originated from the region between Mars and Jupiter.
• Near-Earth Objects can be identified by mixing and colliding different celestial components.
• The orbit of an asteroid is circular while the orbit of a comet is elongated.
• A meteorite is a remnant or fragment of an asteroid or a comet located outside the Earth's atmosphere.
• Most asteroids can be found between Mars and Jupiter.
• Near-Earth Objects typically come from the Oort Cloud and some from the Kuiper Belt.
• The origin of the comets is beyond the solar system.
• A meteoroid is a streak of light that happens when a meteoroid enters the Earth’s atmosphere.
• Meteors are remnants or fragments of asteroids and comets located outside the Earth's atmosphere.
• The Venn diagram can be filled in by identifying the different components present in comets, meteors, and asteroids.
• The Near-Earth Objects (NEOs) include asteroids, comets, and meteors.
• Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners.
• Some astronomers believe that the Starlink project could increase the chances of asteroid hits to earth.
• The Kuiper Belt is located beyond 44 AU.
• The task of tracking near-earth objects will become extremely difficult when telescopes have to filter out tens of thousands of Starlink satellites that are already in the earth's orbit.
• Elon Musk, the founder of Tesla, revealed on Twitter that humans do not have a proper shield to protect the planet from doomsday asteroids.
• Musk called NASA's planetary defense mission 'Armageddon', prompting fears that something sinister from deep space was on its way to earth.
• The news article discusses the risks of asteroid strike to Earth from Elon Musk's Starlink Project, which aims to provide internet to all corners of the globe by sending tens of thousands of satellites into the earth's orbit.
• 9P/Tempel 1 is the most well-known short-period comet of the 20th century as it takes 75 to 76 years to orbit the Sun.
• Space agencies like NASA (National Aeronautics and Space Administration) and astronomers use telescopes to track near-earth objects that could pose a threat to earth in the future.
• On February 2013, 9P/Tempel 1 made a closer approach to Earth as it orbited around the Sun.
• The publisher and authors do not represent nor claim ownership over borrowed materials.
• The module is published by the Department of Education under the leadership of Secretary Leonor Magtolis Briones and Undersecretary Diosdado M. San Antonio.
• Asteroids travel close to the Earth.
• Asteroids provide information on star formation and evolution.
• The chemical composition of comets includes dust, rocks, metals, ice, frozen gases, ammonia, methane, carbon dioxide, and other organic compounds.
• Comets have a varied or irregular shape.
• The chemical composition of asteroids includes dust, rock, and metals like silicate, iron, and nickel.
• Scientists study comets because they provide clues on how liquid water was formed on Earth.
• Asteroids have no orbit as they are inside the Earth’s atmosphere.
• Comets are formed in the Kuiper Belt and Oort Cloud, with most coming from the Asteroid Belt.
• The orbital period of asteroids ranges from 75 to 100,000++ years.
• Meteors are fragments of asteroids and comets.
• Asteroids are composed of iron, stone, stony-iron, and chondrites.
• The drawing should have few artistic qualities.
• Asteroids provide information on the composition of the Earth’s interior.
• Comets are made of metals, ice, dusts, rocks, carbon dioxide, ammonia, argon, and sodium.
• Asteroids are made of metals, iron, dusts, nickel, rock, silicate, argon.