Printable GED Science Test
Transcription
Printable GED Science Test
Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com Science GED Practice Test This test includes 49 questions, you have maximum 90 minutes to answer these questions. 1. Bill and Bob are biological twins who were adopted as babies. Their father and his father and his father (Billy and Bob’s father, paternal grandfather, and paternal great-grandfather) all suffered from early-onset fingernail greening. Which of the following statements is most likely to be the case? A. There is no doubt both Bill and Bob’s nails will be green by age twenty. B. It is likely that both twins will suffer from green nails at an early age. C. Being adopted, it’s unlikely that Bill or Bob are at risk. D. If they take proper precautions, neither of them need to worry about the color of their nails. 2. If the sun were to disappear, for approximately how much longer would we be able to see it? A. B. C. D. 8 minutes 600 minutes 1 year 25 years 3. What is the difference between weather and climate? A. B. C. D. There is none Climate refers to typical patterns of weather Weather refers to typical patterns of climate Climate is the location of weather conditions at a specific time 4. Catalysts are everywhere! A catalytic converter is a device that converts harmful vehicle emissions into less harmful pollutants before they leave the exhaust system. Broadly, a catalyst is a substance that A. Increases the rate of chemical reaction. B. Decreases the rate of chemical reaction. C. Increases the amount of products formed in a reaction. D. Decreases the amount of products formed in a reaction. Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 5. Which of the following objects has the most potential energy? A. B. C. D. An excited puppy about to frolic in a field. A base jumper on the edge of a roof. A car speeding down the highway. A baseball soaring over the stands. 6. The experimental control is the A. B. C. D. Dependent variable Design of the experiment Outcome of the experiment The standard against which the results are measured 7. In an experiment, some participants and some experimenters do not possess full information of the experiment. This is which type of control? A. B. C. D. Blind Negative Double-blind Randomized 8. Which of the following is NOT made up of cells (or a cell)? A. B. C. D. A rhino A rock A bacterium A blade of grass 9. Tides are mostly caused by the A. B. C. D. Sun’s pull of gravity on the earth Moon’s pull of gravity on the earth The rotation of the earth The orbit of the earth Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 10. The nucleus of an atom contains the atom’s A. B. C. D. Protons and neutrons Protons and electrons Neutrons and electrons Neutrons, electrons, and protons 11. A man drives 280 miles north in 2.5 hours. What is his average velocity? A. 112 miles/hour to the north B. 112 miles/hour C. 700 miles/hour to the north D. 700 miles/hour 12. Line graphs A. B. C. D. Convert data into bars or columns Convert data into collections of points Convert data into connected points on a grid Convert data into sectors showing proportion 13. Thunderstorm clouds are A. B. C. D. Stratocumulus Stratus Cumulonimbus Cirrus 14. Which planet is the closest to Earth? A. B. C. D. Mars Mercury Venus Saturn Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 15. Energy is A. B. C. D. The unit for power The rate of doing work The capacity to do work When force acts on a moving body 16.Which of the following correctly pairs the chemical bases of DNA? A. B. C. D. Adenine—thymine, guanine—cytosine Adenine—guanine, thymine—cytosine Adenine—cytosine, thymine—guanine Adenine—adenine, thymine—thymine 17. When studying conflicting viewpoints, you should pay attention to A. B. C. D. Which viewpoint you believe is correct Which argument comes first in the passage The specific numbers found in the argument The basic question the viewpoints are seeking to explain 18. A horse pulling a car is an example of A. B. C. D. Energy Heat Work Thermal energy Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 19. In the last ten years, a lake in Georgia has slowly turned a pink color. Scientist 1 and 2 disagree on the cause: Scientist 1: The lake is turning pink because of pollution from the nearby dye factory. Red dye is leeching through the soil and into the water Scientist 2: The pink color is a result of rainwater washing pink limestone down from the nearby mountains. The pink silt is then dying the lakes pink. How best would you summarize the difference between the scientists’ theories? A. Scientist 2 believes that the pink color will eventually settle at the bottom of the lake while Scientist 1 does not B. Scientist 1 thinks that humans are responsible for the color change while Scientist 2 does not C. Scientist 1 believes that the color will become brighter over time while Scientist 2 does not D. Scientist 2 believes that the color is contained within the lake’s sediment while Scientist 1 does not 20. From smallest to largest, which is the correct order of the following stars? (In terms of volume) A. B. C. D. Red dwarf, white dwarf, Betelgeuse, our sun White dwarf, red dwarf, Betelgeuse, our sun White dwarf, red dwarf, our sun, Betelgeuse Red dwarf, our sun, white dwarf, Betelgeuse 21. What is the rating from a Richter scale based on? A. B. C. D. The damage caused by the seismic waves The amplitude of the seismic waves The frequency of the seismic waves The wavelength of the seismic waves Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 22. Which of the following is NOT characteristic of metals? A. B. C. D. Hard Malleable Bad conductors of heat Good conductors of electricity 23. Heat generally A. B. C. D. Flows from hot to cold Flows from cold to hot Flows within and not between objects Does not move 24. A tall man feeds his cow different amounts of food each day. He notices that the cows are happier on days when they receive the most food. In this situation, what is the independent variable? A. B. C. D. The man’s height The amount of food The number of cows The happiness of the cows 25. The process by which a DNA sequence is copied into a sequence of mRNA is called A. B. C. D. Replication Transcription Translation Protein synthesis 26. About how many stars can be found in the Milky Way? A. B. C. D. 100 million 500 million 200 billion 1 trillion Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 27. Two continental plates are moving away from each other. What type of boundary is this? A. B. C. D. Divergent Convergent Strike-slip Transform 28. Inferring is A. B. C. D. Explaining your observations Putting your hypothesis to the test Making a conclusion based on reasoning Making an explanation based on direct observation 29. A lizard warming itself on a rock is an example of A. B. C. D. Temperature Conduction Convection Radiation 30. What is the correct order of the inner planets (beginning farthest from the sun)? A. B. C. D. Mars, Venus, Earth, Mercury Mercury, Earth, Venus, Mars Mercury, Venus, Earth, Mars Mars, Earth, Venus, Mercury 31. Temperature is a measurement of an object’s A. B. C. D. Heat energy Radiant energy Potential energy Chemical energy Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 32. If a table has 3 rows and 8 columns of information, how many cells of information does it contain? A. B. C. D. 3 8 24 48 33. Which is the best title for a graph? A. B. C. D. The Most Candy Eaten Amount of Candy Eaten by Days of the Week The Days of the Week 20 Pieces of Candy 34. Which of the following is characteristic of plant cells? A. B. C. D. Contain mitochondria Contain chloroplasts Have no cell wall Come in many shapes and sizes 35. What is the largest planet in the Solar System? A. B. C. D. Saturn Neptune Jupiter Uranus 36. Nuclear reactions A. B. C. D. Involve electrons Can form compounds Can form different elements Depend on chemical combination Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 37. A double-blind study is an example of A. B. C. D. A variable A problem An outcome An experimental design 38. As we age, we produce less collagen in our skin. This causes thinner skin and increases the likelihood of wrinkles. Collagen, therefore, is most likely to be a(n) A. B. C. D. Enzyme protein Structural protein Receptor protein Antibody protein 39. The earth’s axis is on a tilt of approximately A. B. C. D. 15° 20° 23° 28° 40. When the northern hemisphere is experiencing spring, the southern hemisphere is experiencing A. B. C. D. Spring Summer Fall Winter 41. Increasing the amount of gas in a fixed object will A. B. C. D. Increase the pressure Decrease the pressure Have no affect on the pressure Cause the gas to change phase Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 42. In general, which of the following are NOT in the kingdom fungi? A. B. C. D. Mushrooms Molds Yeasts Angiosperms 43. The lithosphere is made up of the A. B. C. D. Core and mantle Lower mantle and outer core Crust and upper mantle Crust and inner core 44. A carboxyl group contains which of the following atoms? A. B. C. D. 2 hydrogen, 1 oxygen, 1 carbon 1 hydrogen, 1 oxygen, 2 carbon 2 hydrogen, 2 oxygen, 2 carbon 1 hydrogen, 2 oxygen, 1 carbon 45. The pivot of a lever is called a A. B. C. D. Gear Crank Bearing Fulcrum 46. The majority of Earth’s atmosphere is made up of A. B. C. D. Oxygen Nitrogen Hydrogen Argon Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 47. A solution is a mixture that is A. B. C. D. Homologous Heterogeneous Homogeneous Heterozygous 48. A wheelbarrow is A. B. C. D. Not a lever A first-class lever A second-class lever A third-class lever 49. Which of the following is a solution? A. B. C. D. Sand in water Oil in water Carbonated beverages A bowl of cereal Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 1. Answer: C We know from the prompt that the adopted Bill and Bob, although twins, do not share their genetics with their father. It’s also very likely, since three generations of the males in the family have green nails, that the disease is a genetic trait, rather than one determined by their environment. Thus the best answer is D: it’s unlikely that Bill or Bob have inherited the genes that would turn their nails green at an early age. 2. Answer: A The sun is about 150 million kilometers from earth, which is considerably less than a light-year. Light leaving the sun at this moment will reach us in a little over 8 minutes. 3. Answer: B Climate refers to weather conditions in an area over a period of time. For instance, the climate in West Jenkins is dry and hot, but the weather today in Jenkins is 68 degrees and overcast. 4. Answer: A A catalyst is a substance that speeds up the rate of a chemical reaction. It is an additional substance that is unchanged at the end of the reaction. In a catalytic converter the catalyst itself is often a combination of platinum, palladium, and rhodium. 5. Answer: B Potential energy describes the stored energy of an object, which comes from an object’s position. BothC. andD. are referring to an object’s kinetic energy, which comes from an object’s motion (the car moving down a road and a baseball through the air). So which has more potential energy, an excited puppy or a base jumper? The answer isB. Kinetic energy is calculated by multiplying an object’s mass and its height with the acceleration of gravity (which is a constant). And because a base jumper is much higher in altitude than a puppy (and probably larger), it has more potential energy! 6. Answer: D The experimental control is the result of the experiment when the independent variable is not manipulated; it is the standard against which the results of the experiment are measured. For instance, if you were measuring the growth of a plant in different amounts of sunlight, you would want to measure the growth of a plant in no sunlight. This would give you a point of comparison. Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 7. Answer: C A double-blind experiment is when some of the participants and some of the experimenters do now know everything about the experiment. This is done to reduce bias. For instance, scientists are testing the efficacy of a new drug. They give the drug to half of the participants and a sugar pill to the other half. This is one of the blinds—the patients do not know if they’re being given real medicine. The experimenters are also blind to which participant has been given the placebo. 8. Answer: B According to cell theory, all living things are made up of one or more cells. This means that every plant, every animal, every organism contains these “building blocks of life.” Cells were discovered first by Robert Hooke in 1665, who named them after their resemblance to the cells of Christian monks in a monastery. A rock is not alive. Therefore, it has no cells. 9. Answer: B The main force behind ocean tides is the gravitational pull of the moon the earth’s oceans. The rise and fall of sea levels is also affected by the gravitational force exerted by the Sun and the rotation of the earth, although not as strongly. 10. Answer: A The nucleus of an atom contains the atom’s protons, which are positively charged, and the atom’s neutrons, which are uncharged. The negatively charged electrons are found outside the nucleus. 11. Answer: B Average velocity is distance (in a specific direction!) divided by time. The distance is 280 miles, divided by 2.5 hours = 112 miles/ hour going north. 12. Answer: C A line graph is a type of statistical chart that displays information as a series of points connected by a line segments. The line(s), then, show general patterns in the data. 13. Answer: C Cumulonimbus clouds are dense, tall, vertical clouds. They are capable of producing lightning and even tornadoes. Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 14. Answer: C Closest also in size to our home planet, Venus is located (at its furthest) 162 million miles away from the earth. 15. Answer: C Energy is the capacity to do work. Energy can be measure in joules (J). 1 J is the amount of energy used to apply a force of one 1 newton over a distance of 1 meter. 16. Answer: A The information in DNA is stored as a code made up of four chemical bases: adenine, thymine, guanine, and cytosine. These pair together (with a sugar and phosphate molecule) to form a spiral called a double helix. AnswerA. shows the correct base pairings. 17. Answer: D When studying conflicting viewpoints, one of the key points is What question or issue are they seeking to answer? This will give you a foundation from which to approach different viewpoints. 18. Answer: C When a force acts upon an object—a horse pulls on a car—and causes a displacement of the object—the car moves—then work was done on the object. 19. Answer: B The broadest, and most important, difference between Scientist 1’s theory and Scientist 2’s theory is that Scientist 1 believe humans to be responsible for the change. They disagree on the cause of the color. They both agree that the pink color is the result of something flowing into the lake, but disagree on what that something is. 20. Answer: C White dwarfs are very small and dense stars at the final stages of their lives. Red dwarfs are small and relatively cool stars, and the most common type of star in the Milky Way. Our sun is classified as a yellow dwarf, and is about halfway through the most stable part of its life. Betelgeuse is a red supergiant and is expected to explode in the next million years. 21. Answer: B The Richter scale assigns ratings to earthquakes based on the amplitude, or size, of the largest seismic waves. Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 22. Answer: C A metal is a material that is generally malleable (meaning moldable without breaking), hard, and a good conductor of both heat and electricity. For instance, copper wires are wonderful conductors of electricity. 23. Answer: A Heat generally moves from hot to cold. For example, when you sit on metal bleachers in the fall, it makes your legs extremely cold. Why? Because the heat from your body is flowing into the colder bleachers. 24. Answer: B An independent variable is something that is changed; something that causes an effect. In this case, the farmer was manipulating the amount of food the cows received (the independent variable) and measuring the happiness of the cows (the dependent variable). 25. Answer: B The process by which DNA is copied to RNA is called transcription. That RNA is used to produce proteins through a process called translation. 26. Answer: C Though a rough estimate, it’s likely there are around 200 billion stars in the Milky Way. It probably also contains at least as many planets. 27. Answer: A Divergent boundaries occur when two continental plates move away from each other. Most active divergent boundaries are located between oceanic plates and form rifts (valleys) between the spreading plates. 28. Answer: C To infer is to form an opinion based on circumstantial evidence and prior conclusions, not direct observation. For instance, saying that the sun will rise tomorrow is making an inference; because the sun rose yesterday and today it is likely that it will rise again tomorrow. 29. Answer: B Conduction is the direct transfer of heat from one substance to another. The heat from the rock is moving directly, by contact, into the lizard. In comparison, the rock was heated by the sun through radiation! Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 30. Answer: D The correct answer isD. Mercury is the closest planet to our sun, as well as the smallest. Next comes Venus, which is similarly sized to Earth. Then Earth, and finally, Mars. Mars takes slightly less than two (earth) years to orbit the sun. 31. Answer: B Temperature is a measurement of an object’s heat energy. When the temperature of an object increases, its atoms move faster, increasing its kinetic energy. Temperature is measured by a thermometer. 32. Answer: C Columns are sets of data values arranged vertically. Rows are horizontal. To find the number of cells, multiply the number of cells and rows. 33. Answer: B B is the best option for a graph’s title. It tell us exactly what the graph will be showing and clearly communicates the axis of the graph:A. Amount of Candy andB. Days of the Week 34. Answer: B Plant cells generally contain chloroplasts. Chloroplasts conduct the process of photosynthesis to produce food for the cell; they use chlorophyll to convert light energy into sugars. The other options (A, C andD. are characteristic of animal cells. 35. Answer: C Jupiter is an enormous planet; its mass is two and a half times that of all the other planets in the Solar System. Jupiter is a gas giant that is generally the third brightest object in the night sky (behind Venus and the Moon). 36. Answer: C A nuclear reaction is the process in which changes occur in the nucleus of an atom (or more than one). In nuclear reactions, elements can change. 37.Answer: D Experimental design is the design of the experiment; the manner in which the information is gathered. Double-blind refers to a way of conducting an experiment in which biases in the subjects (hopefully) do not affect the outcome of the experiment. Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 38. Answer: B Structural proteins give stiffness and rigidity to biological components that would otherwise be more fluid. For example, keratin stiffens our nails. Collagen gives our skin firmness and, as we age, a lack of it causes our skin to look thinner and more wrinkled. 39. Answer: C The correct answer isC.: 23°. This tilt causes opposite seasons in the northern and southern hemispheres; when the northern hemisphere is tilted away from the sun, it is winter, and when it is tilted towards the sun, it is summer. 40. Answer: C During autumn and spring, the northern and southern hemispheres are equally as close to the sun; they are either halfway between summer and winter or halfway between winter and summer. When the northern hemisphere is experiencing spring, the southern hemisphere is experiencing fall. 41. Answer: A Increasing the amount of gas in a fixed object will increase the pressure. Imagine a car tire. When you push more air into the tire, the tire becomes harder; the pressure has been increased. 42. Answer: D Angiosperms are flowering plants, meaning that they are in the kingdom plantae. Mushrooms are the fruiting bodies of a fungus, molds are fungi that grow in the form of filaments, and yeasts are single-celled micoorganisms (and are in the kingdom Fungi). 43. Answer: C The lithosphere is made up of the crust and the upper mantle. These are the most rigid layers of the earth. 44. Answer: D A carboxyl group is made up of one carbon atom, two oxygen atoms, and 1 hydrogen atom: (C(O)OH). This group makes up, along with the R group, carboxylic acids. 45. Answer: D A fulcrum is the point on which a lever rests and pivots. This combination amplifies the input force to create a greater output force. For example, when you push on a crowbar, it amplifies the force applied on whatever you’re trying to pry. Other examples include a bottle opener or a teeter-totter. Find more free GED Practice tests and learning tips: www.BestGedClasses.com Check also our free GED Programs that include video lessons and short GED practice tests-> www.BestGEDPractice.com 46. Answer: B A great majority (78%) of Earth’s atmosphere is nitrogen. 21% is oxygen, and the rest is made up of various other gasses. 47. Answer: C Solutions are homogeneous. This means that everything in the solution is evenly spread out and thoroughly mixed. For instance, when you add sugar to water and stir, the sugar dissolves and is spread throughout your glass. 48. Answer: C Second-class levers carry the load between the effort and the fulcrum; the load of a wheelbarrow is between the wheel’s axle and the effort of pushing the handles. 49. Answer: C The correct answer isC. carbonated beverages. Soda is prepared by dissolving carbon dioxide (the solute) into water (the solvent). The others are mixture Find more free GED Practice tests and learning tips: www.BestGedClasses.com