What I Know Directions: Choose the letter of the correct answer. Click your answer. 1. What are commonly called as “shooting stars”? A. asteroids B. comets C. meteors D. meteorites 2. What are found in the circular or somewhat like “doughnut-shaped” region between Mars and Jupiter? A. asteroids B. comets C. meteors D. meteorites 3. Which Near-Earth Objects (NEO) are found on the Kuiper Belt and Oort Cloud? A. asteroids B. comets C. meteors D. meteorites 4. What are comets made of? A. dust only B. metal only C. dust and metal D. dust, metal, and ice 5. What do you call the shining “head” around a comet? A. coma B. crown C. halo D. ring 6. What do you call the depression caused by the objects that fell on a planet or moon? A. canyon B. crater C. plateau D. pothole 2 CO_Q2_Science8_Module6
7. Which could have probably caused the extinction of dinosaurs? A. They caught the flu. B. An asteroid hit the Earth. C. They ate each other until they went extinct. D. A meteorite came and hit the Earth causing their extinction. 8. What causes the bright sparks of light brought by meteors? A. humidity B. air friction C. condensation D. atmospheric pressure 9. What is the major difference among comet, meteor, and asteroid in terms of structure? A. Comet contains icy shell while asteroid and comet do not have. B. Meteor contains icy shell while asteroid and comet do not have. C. Asteroid and comet contain icy shell while meteor does not have. D. Asteroid contains icy shell while asteroid and meteor do not have. 10. Which of the following is the correct location of comets? A. Kuiper Belt B. Asteroid Belt C. Neptune’s orbit D. Earth’s atmosphere 11. What do you call a celestial body that reaches the Earth’s crust? A. comet B. meteor C. meteorite D. meteoroid 12. What will happen if a comet gets closer to the sun? A comet will . A. expire B. explode C. melt and disappear D. form a long tail made of gas and dust 13. Why do scientists study comets? It is because they . A. like studying it B. need to survey the space C. want to examine the mineral contents D. want to study the origin of the Earth and other planets 3 CO_Q2_Science8_Module6
14. What celestial body is shown in the picture? A. asteroid B. comet C. meteorite D. meteoroid Source: https://pixabay.com/illutrations/space-stars-comet-astronomy-1486556/. 15. What Near-Earth Object (NEO) is shown in the picture? A. asteroid B. comet C. meteor D. meteorite Source: https://pixabay.com/vectors/dark-darkness meteor-night-2024127/) 4 CO_Q2_Science8_Module6
The orbit of an asteroid is more rounded and less elliptical than the orbit of a comet. On February 2013, Asteroid 2012 DA14 made a closer approach to Earth as it orbited around the Sun. Distance in space was measured by lightyears and this asteroid was just 0.4 l i g h t y e a r s a w a y f r o m t h e E a r t h , t h e c l o s e s t t h a t an asteroid has ever been on Earth. On December 2012, during the issue of the doomsday prophecies, Asteroid Toutatis has made a near approach to Earth but not as close as Asteroid 2012 DA14. What’s More Activity 2. Spot Some NEOs Directions: Identify what Near-Earth Objects are seen in each item. Choose your answer from the box. Drag your answers from the box and drop it on the the appropriate blank. Asteroid Comet Meteors Meteorites s s 1. 2. 3. (Source: https://pixabay.com/illustrations/sky-stars-planets-space-moon-star-3880590/) 11 CO_Q2_Science8_Module6
Activity 3. Identify It Directions: Identify what is being referred to in each item. Choose your answers from the box. Drag your answers from the box and drop it on the the appropriate blank. Earth’s Atmosphere Kuiper Belt Mars and Jupiter Oort Cloud Asteroid Belt Uranus Earth and Mars 1. It is the origin of the comets that is beyond the solar system. 2. It is where the asteroids originated. 3. It is the origin of the comets located within the orbit of Neptune. 4. It is where meteors can be found. 5. Most asteroids can be found between these two planets. Activity 4. Take It from Mixing and Colliding Directions: Determine the Near-Earth Objects after mixing or colliding the different celestial components. Type your answer inside the box. ice dust metal dust metal 12 CO_Q2_Science8_Module6
collision ( asteroid asteroid 13 CO_Q2_Science8_Module6
Assessment Directions: Choose the letter of the correct answer. Click your answer. 1. Which statement is true? A. Only asteroids collide with Earth. B. Comets are ball of ice, dust, and metal. C. All comets in our solar system have tails. D. Only asteroids can be found in the solar system. 2. What do you call the fragments or debris that resulted from the collision of asteroids or comets? A. Meteors B. Meteoroids C. Oort Cloud D. Kuiper Belt 3. What is the bright glow around the “head” of a comet? A. Coma B. Crown C. Halo D. Ring 4. What is the name of the famous comet that can be seen from Earth every 75 to 76 years? A. Hale Boop B. Comet Halley C. Comet Tempel 1 D. Shoemaker Levy-9 5. What is the correct term for a “shooting star”? A. Asteroid B. Comet C. Falling star D. Meteor 6. What is an Asteroid Belt? A. It has rocks crossing the Sun, Mars, and Jupiter. B. It has rocks crossing the Sun, Jupiter, and Uranus. C. It is an area between Mars and Jupiter where most asteroids are found. D. It has rocks between the Earth and Jupiter where most asteroids are found. 18
7. What is a meteorite? It is a . A. dim meteor B. bright meteor C. meteoroid that lights up D. remains of meteoroids that hit the Earth 8. What is a comet? It is a/an . A. rock from Mars B. class of smaller inner solar system bodies that orbit around the sun C. icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun D. natural object from small to huge that originates in space and survives the impact on the Earth’s surface 9. What composes silicate? A. silicon, oxygen, and at least one metal B. silicon, carbon, and at least one metal C. silicon, methane and a rock D. iron, nickel, and argon 10. Why do scientists study comets? A. They are valuable minerals. B. They could provide Earth with rocks. C. They can help make the Earth a habitable planet. D. They provide information how the Earth obtained liquid water. 11. Why would global temperature of the Earth drop when struck by a massive asteroid? A. The resulting cloud would block out sunlight. B. The low temperature of asteroid would chill the oceans. C. The impact would move the Earth farther from the Sun. D. The ice in the asteroid would increase the Earth’s reflective power. 12. When objects strike on the surface of a planet, they leave a deep impression on the surface called ______. A. canyon B. crater C. plateau D. pothole 13. Meteoroids are formed when asteroids collided and crushed into pieces. Based on this statement, where did the meteoroids originate? A. Asteroid Belt B. Mars C. Moon D. Sun 19
14.Which best describes the picture below? (Source: https://pixabay.com/photos/meteorite-stone- hoba-namibia-700836/) A. meteorite B. meteoroid with dust C. comet with coma and ion tail D. asteroid that falls to the Earth 15. What celestial body is shown below? (Source: https://pixabay.com/photos/asteroid- meteorite-impact-meteor-179319/) A. Meteors B. Meteorites C. Meteoroids D. Meteor shower 20