1st Quarter Summative Test Earth and Life Science 12 PDF 2024-2025

**1^st^ QUARTER SUMMATIVE TEST IN EARTH AND LIFE SCIENCE 12** **SY: 2024-2025** **GENERAL DIRECTION:** Read and understand the question carefully. Shade the letter of your choice in your answer sheet. If you want to change your answer, erase it carefully and shade the letter of your new answer. Ea...

**1^st^ QUARTER SUMMATIVE TEST IN EARTH AND LIFE SCIENCE 12** **SY: 2024-2025** **GENERAL DIRECTION:** Read and understand the question carefully. Shade the letter of your choice in your answer sheet. If you want to change your answer, erase it carefully and shade the letter of your new answer. Each item corresponds to ONE point. A. 1\. Formation of magma generally begins: A. In the center of a rock body C. At the centers of mineral crystals B. Along the surface of a rock body D. At the junctions between mineral grains 2\. As magma crystallizes, it will most likely evolve in which way? A. By becoming more felsic and more viscous as mafic minerals crystallize out. B. By becoming more mafic and less viscous as felsic minerals crystallize out C. By becoming more felsic and less viscous as mafic minerals crystallize out D. By becoming more mafic and more viscous as felsic minerals crystallize out 3\. The phrase younger or older can be used to remember the idea of; 4\. Which of the following DOES NOT belong to the group? 5\. Which of the following is TRUE about the age of the rock produced from intrusion? 6\. Based on the picture (right), which rock is the oldest? 7\. Which of the following statements is TRUE about faulting and magma intrusion? 8\. Arrange the sequence of rocks from youngest to oldest. 9\. Isotopes with short half-lives are not useful for dating very old rocks because; 10\. What happens to the parent and daughter atoms after the first half-life? 11\. Below are characteristics of Earth, the possible reasons why life exists on this planet except for? 12\. Density plays a vital role in determining a planet's surface gravity and is intrinsic to understanding how a planet formed. Which among the planets has the highest density? 13\. Building blocks of rocks. 14\. A fundamental component of matter that cannot be broken into simpler particles by ordinary chemical processes. 15\. It refers to the color of the fine powder of a mineral. 16\. Which does NOT belong to the physical properties of minerals? 17\. It is formed when magma solidifies. 18\. The tendency of some minerals to break along flat surfaces is called \_\_\_\_\_\_\_. 19\. A scale used to measure and express the hardness of minerals is known as. 20\. The size, shape, and arrangement of mineral grains or crystals in a rock. 21\. A consolidated aggregate of various types of minerals or a consolidated aggregate of multiple grains of the same kind of mineral is called \_\_\_\_\_\_\_\_\_\_\_. 22\. The sequence of events in which rocks are formed, destroyed, altered, and reformed by geological processes. 23\. What type of rock is formed by weathering and erosion? 24\. What makes magma different from lava? A. 25\. Which of these statements is **TRUE**? 1. A. If water is present, rocks will melt at higher temperatures than normal. B. Under high pressure, rocks melt at lower temperatures. C. Magma that crystallizes forms igneous rocks. D. When a rock melts, different minerals melt at the same temperature. 26\. Identify the **CORRECT** statement about magma. A. Typical magma temperatures exceed 10, 000 degrees Celsius. B. Magma never contains dissolved gases. C. Magma forms when rocks melt. D. Magma always comes from the lower mantle. 27\. Bowen's Reaction Series describes the evolution of the mineralogy of a crystallizing magma with: 1. A. Decreasing pressure as the magma body rises. B. Decreasing temperature as the magma cools. C. Increasing water content as the magma turns solid. D. Increasing density as the minerals crystallize out. 28\. Earth's mantle is **BEST** described as: 5. A. Liquid metal C. mostly solid rock, with pockets of liquid rock 1. B. A slush of crystal D. Mostly liquid rock, with large solid rocks A. 29\. Why are mafic eruptions generally less explosive than felsic eruptions? A. Mafic magma is hotter, allowing gases to remain dissolved in the magma. B. Mafic magma is denser, keeping gases from moving up toward the surface. C. Mafic magma is richer in iron, keeping gases in the crystalline phase. 1. D. Mafic magma is more fluid, allowing gases to escape before they build-up 1. pressure. 30\. Which **BEST** describes "fractionation"? A. As minerals crystallize, they are isolated from the remaining magma and 1. unable to react to it. B. As magma turns solid, the fraction of mafic minerals decreases as the 1. fraction of felsic minerals increases. C. As magma cools, only a fraction of it turns solid at any one time. D. Only a fraction of all magma chambers turns solid before erupting. 1. 31\. What planet has an atmosphere composition of 77% Nitrogen, 21% Oxygen, and 1% Argon according to NASA's findings in 2015? 2. 32\. Planets are classified according to size. The smaller ones are called the terrestrial, and have solid surfaces, and dense and metallic cores while the bigger ones are known as Jovian, and have gaseous surfaces and cores of lesser density. Which set of planets are classified as terrestrial? 33\. What particular substance is present on our planet that provides a medium for different life processes to occur? 6. 34\. Earth is most similar in mass and density to which solar system object? 7. 35\. Gravity is what holds the planets in orbit around the sun. Which of the given planets has the most gravity? 8. 36\. When Earth is seen from outer space, it looks mainly blue. This is because most of the Earth is covered with? 9. 37\. What is the mixture of gases that surrounds the planet? 10. 38\. Animals and plants needing water to survive show which two systems interact. 39\. These are bacteria that can tolerate extreme temperatures (41 to 122 0C) commonly associated with hot springs and deep-sea hydrothermal vents. 14. 40\. What are the factors that make a planet habitable? PREPARED BY: CHECKED BY: Kirstin Lyza M. Abad Subject Teacher Ma. Lorren C. Cantoja NOTED BY: Academic Head Amid S. Dumdum School Head