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Download GED Science Lesson 1. The GED Science Test ïƒ 50 multiple choice questions ïƒ For most questions you will have to read a passage or look at an illustration

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GED Science Lesson 1 Slide 2 The GED Science Test 50 multiple choice questions For most questions you will have to read a passage or look at an illustration to answer the question In some cases you will have to rely on your prior scientific knowledge Slide 3 The GED Science Test Content AreaPercentage of Test Life Science (Plant and Animal Science; Human Biology) 45% Physical Science (Chemistry; Physics) 35% Earth and Space Science20% Slide 4 Understanding Science Materials Requires three abilities: The ability to summarize ideas The ability to restate information The ability to identify implications Slide 5 Summarizing the Main Idea In many passages, the author expresses the main idea, or key thought, as a single sentence. Other sentences provide details to support the main idea. Slide 6 Summarizing the Main Idea The action of ocean waves can change the shape of a shoreline. Waves can erode the shore, breaking up land masses near the water. Waves can also move the eroding dirt and rocks great distances down the shoreline. Beaches Will be formed when waves move more rock fragments toward the shore than away from it. Cliffs are formed when waves move more rock fragments away from the shore than toward it. Slide 7 Summarizing the Main Idea The action of ocean waves can change the shape of a shoreline. Waves can erode the shore, breaking up land masses near the water. Waves can also move the eroding dirt and rocks great distances down the shoreline. Beaches will be formed when waves move more rock fragments toward the shore than away from it. Cliffs are formed when waves move more rock fragments away from the shore than toward it. Slide 8 Summarizing the Main Idea Imagine taking a microscope and looking at the edge of a piece of paper in the hope of seeing a single atom! Using the worlds most powerful microscope, you still couldnt see one, you would find that it takes about 1 million atoms, placed side by side to cross a distance as short as the width of the edge of the paper. Atoms are so small that even scientists must be content with studying large numbers of them at the same time rather than trying to look at a single atom in the way that a doctor might look at a patient. Slide 9 Summarizing the Main Idea Imagine taking a microscope and looking at the edge of a piece of paper in the hope of seeing a single atom! Using the worlds most powerful microscope, you still couldnt see one, you would find that it takes about 1 million atoms, placed side by side to cross a distance as short as the width of the edge of the paper. Atoms are so small that even scientists must be content with studying large numbers of them at the same time rather than trying to look at a single atom in the way that a doctor might look at a patient. Slide 10 1. What percent of Earths Surface is land? 2. What total percent of Earths surface is covered by the two largest oceans? 3. What total percent of Earths surface is covered by water? Slide 11 By comparing the amount of surface covered by water with the amount of surface covered by land, what would you say would be a key point made by this circle graph? Slide 12 Restating Information To restate information is to use different words or phrases to express the same idea. Slide 13 Restating Information Original Excess fat and carbohydrate consumption can lead to obesity Restatement Youll get fat if you eat too many fats and carbohydrates Slide 14 Restating Information Original Rocks from the moons surface show features characteristic of rocks found on Earth. Restatement Moon rocks are very similar to Earth rocks. Slide 15 Describe the point you think that the author is trying to make about translucent materials. Slide 16 Identifying Implications To imply means to suggest An implication is a point of view or idea that an author suggests. Scientists may have invented nuclear weapons, but I sure dont want them to work on arms control! Implies that he does not have a lot of faith in the political ability of scientists. Slide 17 The scientific Method Slide 18 Distinguishing facts from hypotheses A scientific fact is a statement, based on evidence, that can be proved to true. A hypothesis is a reasonable explanation of a scientific fact. An opinion is a personal belief that is often based on a persons own feelings. Slide 19 Distinguishing facts from hypotheses Slide 20 Fact, Opinion or Hypothesis Because many people are frightened by snakes, there should never be an effort to save any species of snake Opinion Slide 21 Fact, Opinion or Hypothesis Moonlight is actually light from the sun that is reflected off the moons surface. Fact Slide 22 Fact, Opinion or Hypothesis The reason that moon rocks are similar to Earth rocks may be that the moon and Earth were once part of the same cloud of matter in space. Hypothesis Slide 23 Fact, Opinion or Hypothesis During winter months, tree roots store food that is used by the plant as it grows new leaves and stems in the spring. Fact Slide 24 Fact, Opinion or Hypothesis Regardless of what chemists claim, vitamins produced in a laboratory cant possibly be as healthful as vitamins naturally found in foods. Opinion Slide 25 Fact, Opinion or Hypothesis The reason that one person is often so strongly attracted to a second person may be smell rather than good looks or personality. Hypothesis Slide 26 Fact, Opinion or Hypothesis Air pollution is a negative by-product of the Industrial Revolution Fact Slide 27 Fact, Opinion or Hypothesis Scientists genetically engineered squash to make it resistant to a deadly virus. Fact Slide 28 Fact, Opinion or Hypothesis The study of genetics has proved to be of little value. Opinion Slide 29 What is life Slide 30 What is life? Slide 31 Respiration Living things get energy from food (often by using oxygen ) Slide 32 What is life? Movement Living things can move all or part of themselves. Slide 33 What is life? Reproduction Living things can produce offspring. Slide 34 What is life? Nutrition Living things feed. Plants use energy from light to make food. Animals eat plants or other animals. Slide 35 What is life? Excretion Living things get rid of waste substances they produce. Slide 36 What is life? Sensitivity Living things can sense and respond to changes in their surroundings. Slide 37 What is life? Growth Living things can increase the size of their bodies by adding mass and (often) new cells. Slide 38 The Cell Slide 39 Slide 40 Slide 41 Slide 42 Slide 43 Slide 44 Slide 45 Slide 46 Slide 47 Slide 48 Slide 49

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