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Q: Which graph shows a direct proportion?

Q: Use the data table below to answer the question . What is the relationship between a car’s mass and its stopping distance? A. directly proportional B. exponential C. inverse squared D. inversely proportional.

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Q: Which graph shows a direct proportion?

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  1. Q: Use the data table below to answer the question.What is the relationship between a car’s mass and its stopping distance?A. directly proportional B. exponentialC. inverse squared D. inversely proportional SC12.1.1.g DOK 2

  2. A: Use the data table below to answer the question. What is the relationship between a car’s mass and its stopping distance?A. directly proportional – Correct. The mass and the stopping go up at the same rate. B. exponential – Incorrect. An exponential curve quickly curves up.C. inverse squared – Incorrect. An inverse squared relationship is when the distance is the inverse and squared mass. D. inversely proportional – Incorrect. An inverse relationship is when one variable goes up the other goes down. SC12.1.1.g DOK 1

  3. Q: Which graph shows a direct proportion? A. B. C. D. speed speed speed speed time time time time SC12.1.1.g DOK 1

  4. Q: Which graph shows a direct proportion? A. B. C. D. A. Incorrect - This graph does not show a directly proportional relationship because both variables do not change at the same rate. B. Correct - This graph shows a direct proportion where both variables go up at the same rate. C. Incorrect - This graph shows speed increasing then decreasing while time increases. D. Incorrect - This graph does not show a directly proportional relationship because both variables do not change at the same rate. speed speed speed speed time time time time SC12.1.1.g DOK 1

  5. Q: How is the energy of liquid water changed when ice is formed? • Liquid water absorbs energy. • Liquid water releases energy. • Liquid water’s energy is destroyed. • Liquid water’s energy stays the same. SC12.2.1.b DOK.1

  6. A: How is the energy of liquid water changed when ice is formed? • Liquid water absorbs energy. – Incorrect. Liquid water has more energy than ice. • Liquid water releases energy. – Correct. Liquid water has more energy than ice. • Liquid water’s energy is destroyed. – Incorrect. Energy is not created or destroyed. • Liquid water’s energy stays the same. – Incorrect. Energy must change in a change of state. SC12.2.1.b DOK.1

  7. Q: What particle is exchanged in an acid/base reaction? • free electron • hydrogen ion • alpha particle • unbound neutron SC12.2.1dDOK.1

  8. A: What particle is exchanged in an acid/base reaction? • free electron – Incorrect. Electrons are exchanged in reduction/oxidation reactions. • hydrogen ion – Correct. The transfer of hydrogen ion is the definition of an acid/base reaction. • alpha particle – Incorrect. An alpha particle is identical to a helium nucleus. • unbound neutron – Incorrect. Neutrons are not exchanged in chemical reactions. SC12.2.1dDOK.1

  9. Q: What contributes to increasing the rate of a chemical reaction? • Using larger pieces of reactant(s). • Heating the container of reactant(s). • Using a smaller amount of reactant(s). • Limiting contact between the reactant(s). SC812.2.1.eDOK.1

  10. A: What contributes to increasing the rate of a chemical reaction? • Using larger pieces of reactant(s). – Incorrect. This would decrease the reaction rate because there would be fewer collisions. • Heating the container of reactant(s). – Correct. This would increase the reaction rate because it increases the number of collisions. • Using a smaller amount of reactant(s). – Incorrect. This would decrease the reaction rate because there is less to react. • Limiting contact between the reactant(s). – Incorrect. This would decrease the reaction rate because this decreases the number of collisions. SC812.2.1.eDOK.1

  11. Q: Identify the charge and location of the electrons within an atom. • Electrons are positive and orbit the nucleus. • Electrons are positive and are in the nucleus. • Electrons are negative and orbit the nucleus. • Electrons are negative and are in the nucleus. SC12.2.1.f DOK.1

  12. A: Identify the charge and location of the electrons within an atom. • Electrons are positive and orbit the nucleus. – Incorrect. Electrons are negative. • Electrons are positive and are in the nucleus. – Incorrect. Electrons are negative and orbit the nucleus. • Electrons are negative and orbit the nucleus. – Correct. • Electrons are negative and are in the nucleus. – Incorrect. Electrons orbit the nucleus. SC12.2.1.f DOK.1

  13. Q: An animal runs at a speed of 20 meters per second (m/s) for 10 seconds (s). How far did the animal travel in meters (m)? • 2 m • 10 m • 30 m • 200 m SC12.2.2.aDOK1

  14. A: An animal runs at a speed of 20 meters per second (m/s) for 10 seconds (s). How far did the animal travel in meters (m)? • 2 m – Incorrect. See below. • 10 m – Incorrect. See below. • 30 m – Incorrect. See below. • 200 m – Correct. See below. SC12.2.2.aDOK1

  15. Q: What is the speed of the car in meters per second (m/s) at 3 seconds (s)? • 0 m/s • 5 m/s • 10 m/s • 15 m/s SC12.2.2.aDOK2

  16. A: What is the speed of the car in meters per second (m/s) at 3 seconds (s)? • 0 m/s – Incorrect. • 5 m/s – Correct. • 10 m/s – Incorrect. • 15 m/s – Incorrect. • The car has traveled 15 m in 3 s, and SC12.2.2.aDOK2

  17. Q: Use the diagram below to answer the question. Which phrase describes Point B in the diagram? • Plates are not moving. • Plates move past each other sideways. • Plates move apart and volcanoes from. • Plates move toward each other and volcanoes form. SC12.4.2.b DOK.2

  18. A: Use the diagram below to answer the question. Which phrase describes Point B in the diagram? • Plates are not moving. – Incorrect. Surface plates are driven by the moving mantle. • Plates move past each other sideways. – Incorrect. The plate between A and B is being subducted. • Plates move apart and volcanoes from. – Incorrect. The plates are moving toward each other. • Plates move toward each other and volcanoes form. – Correct. The plate between A and B is being subducted and volcanoes will result. SC12.4.2.b DOK.2

  19. Q: What is the most widely accepted scientific idea used to describe the formation of the universe? • big bang theory • theory of evolution • modern atomic theory • kinetic theory of matter SC12.4.1.a DOK.1

  20. A: What is the most widely accepted scientific idea used to describe the formation of the universe? • big bang theory – Correct. • theory of evolution – Incorrect. Evolution does not describe the formation of the universe. • modern atomic theory – Incorrect. Atomic theory describes the nature of the atom. • kinetic theory of matter – Incorrect. Kinetic theory of matter describes the interactions of atoms and molecules. SC12.4.1.a DOK.1

  21. Q: Consider the following samples of coal. Which sample will burn the slowest, provided they are equal in mass? • large pieces of coal (the size of an orange) • small pieces of coal (the size of a grape) • sample of powdered coal (powdered) • all sample sizes burn at the same rate. SC12.2.1.e DOK.1

  22. A: Consider the following samples of coal. Which sample will burn the slowest, provided they are equal in mass? • large pieces of coal (the size of an orange) – Correct. Larger pieces have fewer surface collisions and therefore react slower. • small pieces of coal (the size of a grape) – Incorrect. Smaller pieces have more surface collisions and therefore react quicker. • sample of powdered coal (powdered) – Incorrect. Smaller pieces have more surface collisions and therefore react quicker. • all sample sizes burn at the same rate. – Incorrect. The rate of a reaction depends on the amount of surface collisions and therefore the rate varies. SC12.2.1.e DOK.1

  23. Q:What should be done to change Li to Li+? • Add one neutron • Add one electron • Remove one proton • Remove one electron SC12.2.1.f DOK.1

  24. A:What should be done to change Li to Li+? • Add one neutron – Incorrect. This would result in a different isotope forming. • Add one electron – Incorrect. This would form a Li- ion. • Remove one proton – Incorrect. This would result in the formation of helium. • Remove one electron – Correct. Removing an electron leaves an positive 1 unbalanced charge (ion). SC12.2.1.f DOK.1

  25. Q: How are C-12 and C-14 related? • they are ions of carbon • they are isotopes of carbon • they are neutrons of carbon • they are valance electrons of carbon SC12.2.1.g DOK.1

  26. A: How are C-12 and C-14 related? • they are ions of carbon – Incorrect. Ions are atoms that have a net charge. • they are isotopes of carbon – Correct. Isotopes are atoms of the same element that have differing numbers of neutrons. • they are neutrons of carbon – Incorrect. C-12 and C-14 represent entire nuclei not just neutrons. • they are valance electrons of carbon – Incorrect. C-12 and C-14 represent atomic nuclei not electrons. SC12.2.1.g DOK.1

  27. Q: In a battery-powered flashlight, which energy transfer takes place? • Nuclear energy is changed into mechanical waves. • Chemical energy is changed into mechanical waves. • Nuclear energy is changed into electromagnetic waves. • Chemical energy is changed into electromagnetic waves. SC12.2.2.3.b DOK 1

  28. A: In a battery-powered flashlight, which energy transfer takes place? • Nuclear energy is changed into mechanical waves. – Incorrect. Batteries do not have nuclear energy and light is not a mechanical wave. • Chemical energy is changed into mechanical waves. Incorrect. Light is not a mechanical wave. • Nuclear energy is changed into electromagnetic waves. Incorrect. Batteries do have have nuclear energy. • Chemical energy is changed into electromagnetic waves. SC12.2.2.3.b DOK 1

  29. Q: What does the law of conservation of energy state? • Energy is neither created nor destroyed. • Energy is conserved ONLYin elastic collisions. • Energy is not conserved in elastic collisions. • Energy is created and destroyed by chemical reactions. SC12.2.2.3.i DOK 1

  30. A: What does the law of conservation of energy state? • Energy is neither created nor destroyed. – Correct. The law of conservation of energy states that energy is neither created nor destroyed. • Energy is conserved ONLY in elastic collisions. – Incorrect. Energy is conserved under all conditions. • Energy is not conserved in elastic collisions. – This statement is false. Energy is always conserved. • Energy is created and destroyed by chemical reactions. – Energy is conserved in chemical reactions. SC12.2.2.3.i DOK 1

  31. Q: As a person climbs a ladder, where is the gravitational potential energy the greatest? • top • middle • bottom • same at every point SC12.2.3.j DOK 1

  32. A: As a person climbs a ladder, where is the gravitational potential energy the greatest? • top – Correct. Gravitational potential energy is directly proportional to height. PEg = mgh • middle – Incorrect. The gravitational potential energy at this height will be less than at the top. • bottom – Incorrect. The gravitational potential energy at this height will be less than at the top. • same at every point – Incorrect. The gravitational potential energy changes with height. SC12.2.3.j DOK 1

  33. Q: What happens to the frequency of waves moving at a constant speed, if the wavelength is doubled? • doubled. • halved. • quadrupled. • unchanged. SC12.2.3.a DOK1

  34. A: What happens to the frequency of waves moving at a constant speed, if the wavelength is doubled? • doubled – Incorrect. Wavelength and frequency are inversely proportional. • halved – Correct. • quadrupled – Incorrect . Wavelength and frequency are inversely proportional. • unchanged – Incorrect. Wavelength and frequency are interdependent. SC12.2.3.a DOK1

  35. Q: Which property of light waves makes a pencil look bent in a beaker of water? • diffraction • interference • reflection • refraction SC12.2.3.c DOK1

  36. A: Which property of light waves makes a pencil look bent in a beaker of water? • diffraction – Incorrect. Diffraction is light bending around an object or through a small slit. • interference – Incorrect. Light does not bend in interference. • reflection – Incorrect. Reflection is when a wave bounces off a surface it cannot pass through. • refraction – Correct. Refraction is the bending of a wave as it enters a new medium at an angle (water and air are mediums). SC12.2.3.c DOK1

  37. Q: What happens if a pine tree virus is introduced into a combination forest? • The virus will have no impact on the forest. • The virus will kill all the plants, but leave the animals. • The virus will kill all the pine trees, but leave the other organisms. • The virus will kill all the biotic factors, leaving all the abiotic factors. SC12.3.3.a DOK2

  38. A: What happens if a pine tree virus is introduced into a combination forest (both temperate and tropical rain)? • The virus will have no impact on the forest. – Incorrect. The virus will try to survive at all costs and will take out the pine trees. • The virus will kill all the plants, but leave the animals. – Incorrect. The virus will only affect the pine trees, not the other plants. • The virus will kill all the pine trees, but leave the other organisms. – Correct. The virus will affect only the pine trees, due to the virus’s RNA structure. • The virus will kill all the biotic factors, leaving all the abiotic factors. – Incorrect. The virus will only affect the pine trees. SC12.3.3.a DOK2

  39. Q: You take a sample of species from the area labeled A in Figure 1. What do you expect to find? • almost no life • great species diversity • one dominant species of fish • organisms that need very little oxygen Figure 1 SC12.3.3.c DOK1

  40. A: You take a sample of species from the area labeled A in Figure 1. What do you expect to find? • almost no life – Incorrect. Almost no life exists in colder, more shallow areas. • great species diversity – Correct. Great species diversity exists because the waters are shallower, warmer, and richer in oxygen. • one dominant species of fish – Incorrect. One dominant species of fish is untrue due to rich amounts of oxygen. • organisms that need very little oxygen – Incorrect. Area A is oxygen-rich. Figure 1 SC12.3.3.c DOK1

  41. Q: Order the levels of organization from the GREATEST to LEAST. • biological community, organism, population, ecosystem • ecosystem, biological community, population, organism • population, ecosystem, biological community, organism • organism, population, biological community, ecosystem SC12.3.3.a DOK1

  42. A: Order the levels of organization from the GREATEST to LEAST. • biological community, organism, population, ecosystem – Incorrect. Ecosystem is greatest. • ecosystem, biological community, population, organism – Correct. • population, ecosystem, biological community, organism – Incorrect. Ecosystem and biological community are greater than population. • organism, population, biological community, ecosystem – Incorrect. This is ordered from least to greatest. SC12.3.3.a DOK1

  43. Q: What is found in the area labeled D in Figure 1? • plants that require light • amphibians that need a warm habitat • species that requires plenty of oxygen • decomposers that feed on dead organisms Figure 1 SC12.3.1.d DOK1

  44. A: What is found in the area labeled D in Figure 1? • plants that require light – Incorrect. Area D lacks sunlight. • amphibians that need a warm habitat – Incorrect. These organisms would not survive in this environment. • species that requires plenty of oxygen – Incorrect. Photosynthesis is not taking place. • decomposers that feed on dead organisms – Correct. Decomposers that feed on dead organisms thrive in areas where there is little sunlight. Figure 1 SC12.3.1.d DOK1

  45. Q: How does the amount of energy and matter affect the diversity of a biosphere? • The more energy and matter, the less the diversity of the biosphere. • The more energy and matter, the more the diversity of the biosphere. • The less energy and matter, the greater the diversity of the biosphere. • The less energy and matter, the same amount of diversity of the biosphere. SC12.3.3.a DOK1

  46. A: How does the amount of energy and matter affect the diversity of a biosphere? • The more energy and matter, the less the diversity of the biosphere. – Incorrect. • The more energy and matter, the more the diversity of the biosphere. – Correct. The diversity of the biosphere is directly related to the amount of energy and matter • The less energy and matter, the greater the diversity of the biosphere. – Incorrect. • The less energy and matter, the same amount of diversity of the biosphere. – Incorrect. SC12.3.3.a DOK1

  47. Q: A person designed an experiment to find out which mouthwash was most effective against some bacteria. Four different circles cut from a paper towel were soaked in the same mouthwash. The circles were put on a nutrient agar-coated Petri dish that was covered with bacteria commonly found in the mouth and incubated for 24 hours. What could be done to improve the experiment? A. Use the same size paper circles for all mouthwashes. B. Use the different types of mouthwash on each paper circle. C. Use different kinds of bacteria. D. Use a smaller Petri dish. SC12.1.1.a DOK2

  48. A: A person designed an experiment to find out which mouthwash was most effective against some bacteria. Four different circles cut from a paper towel were soaked in the same mouthwash. The circles were put on a nutrient agar-coated Petri dish that was covered with bacteria commonly found in the mouth and incubated for 24 hours. What could be done to improve the experiment? • Use the same size paper circles for all mouthwashes. – Incorrect. This will have no effect on the experiment. • Use different types of mouthwash on each paper circle. – Correct. This will test the effectiveness of the mouthwash on the bacteria. • Use different kinds of bacteria. – Incorrect. This would not test the mouthwash. • Use a smaller Petri dish. – Incorrect. This would not have an effect on the experiment. SC12.1.1.a DOK2

  49. Q: What correctly describes the ability of matter and energy to be recycled in an ecosystem? • Energy is recycled, but most matter is lost. • Both matter and energy are completely lost. • Matter is recycled, but some energy is lost to heat. • Both energy and matter are completely recycled. SC12.3.3.b DOK2

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