Name: Science 7 Quarterly Additional Practice Questions
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1 Name: Science 7 Quarterly Additional Practice Questions 1. During a laboratory activity, a student combined two solutions. In the laboratory report, the student wrote A yellow color appeared. The statement represents the student s recorded A) conclusion B) observation C) hypothesis D) inference 2. Which statement made by a student after examining a rock specimen is an inference? A) The rock was formed by a volcano. B) The rock has rounded edges. C) The rock is light-colored. D) The rock contains large crystals. 3. An interpretation based upon an observation is called A) a fact B) an inference C) a classification D) a measurement 4. Which statement about a rock sample is an inference? A) The rock scratches a glass plate. B) The rock was formed 100 million years ago. C) The rock's mass is 254 grams. D) The rock is red. 5. Why is it important to accurately record the procedures and results of an experiment? A) So that you know what you did. B) So that others can admire your work. C) So that others can check to see if you did your experiment correctly. D) So that others can repeat your experiment to see if they get the same results. 6. A gardener did an experiment to determine which of the three brands of fertilizer would produce the most growth in his plants. For three different plants of the same species, he used each of the three brands of fertilizer. Once a week, he made observations for each plant. Which would have improved the experiment? A) Using a different species of plant for each brand of fertilizer. B) Mixing the fertilizers. C) Making observations every two weeks. D) Testing each fertilizer with more than one type of plant. 7. In an experiment designed to find out if dogs prefer to have food of a specific shape, it would be best to A) use different brands of dog food with different shapes. B) use the same brand of dog food, but with different colors. C) use the same exact kind of dog food, but with different shapes. D) add a special ingredient to some of the dog food. 8. Which factor would have the least effect on the results of an experiment designed to determine which model plane stays in the air longest? A) The color of the model planes. B) The size of the wings. C) The shape of the wings. D) Weight distribution in the models. 9. The table below shows the number of algae that exist after hours of living in an aquatic environment. At this rate, how many algae will there be after 6 hours? A) B) C) D)
2 10. Below is a graph that shows the activity of a mouse for Monday and Tuesday. 15. A piece of copper metal is correctly placed on a triple beam balance. The riders are all at the zero mark except for the rider on 0-10 gram beam which is located at the position shown. On Wednesday, the mouse would probably be most active at A) 9 A.M. B) 12 noon C) 9 P.M. D) 12 midnight 11. Which unit of measurement would best be used to measure the volume of a drop of water? A) milliliter B) centiliter C) liter D) kiloliter 12. Which would be the best unit of measurement for length of a pencil? A) millimeter B) centimeter C) micrometer D) kilometer 13. What unit would be best to weigh a teenage boy? A) milligrams B) centigrams C) grams D) kilograms 14. Which shows units of volume from smallest to largest in the correct order? A) milliliter, liter, kiloliter B) liter, milliliter, kiloliter C) kiloliter, milliliter, liter D) liter, kiloliter, milliliter What is the mass of the copper metal? A) g B) g C) 0.55 g D) 5.50 g 16. The diagram below shows 3 graduated cylinders. The contents of cylinders X and Y are poured into cylinder Z. Which letter represents the amount of liquid that will be in container Z? A) A B) B C) C D) D
3 17. Base your answer to the following question on the diagrams below which represent four solid objects made of the same uniform material. The volumes of the sphere and the bar are not given. Which graph best represents the relative densities of the objects? A) B) C) D) 18. The data table below shows the masses and volumes of three objects (,, and ). The formula for calculating an object's density is: Which statement about the densities of these three objects is correct? A) is more dense than B) is more dense than. C) and have equal densities. D) and have equal densities. 19. Both the mass and volume of a substance must be used in calculating its A) melting point B) vapor pressure C) boiling point D) density 20. A rock sample has a mass of 16 grams and a volume of 8 cubic centimeters. When the rock is cut in half, what is the volume and density of each piece? A) 8 cm 3 and 0.5 g/cm 3 B) 8 cm 3 and 1.0 g/cm 3 C) 4 cm 3 and 2.0 g/cm 3 D) 4 cm 3 and 4.0 g/cm The average velocity of an object can be determined by the formula A) B) C) D) 22. The average speed of a plane was 500 kilometers per hour. How long did it take the plane to travel 100 kilometers? A) 0.2 hour B) 0.5 hour C) 0.7 hour D) 5 hours
4 23. A runner completed the 100 meter dash in 10 seconds. The average speed was A) 1 m/s B) 10 m/s C) 100 m/s D) 1,000 m/s 24. A moving body must undergo a change of A) velocity B) acceleration C) position D) direction 25. Anne traveled from her home to a friend's house. She constructed this graph to show the relationship between the time and the distance traveled. 26. The graph below shows the distance traveled by an object plotted against time. What is the distance covered by the object between the 2nd and 6th second? A) 8 m B) 2 m C) 6 m D) 4 m 27. The graph at the right represents the motion of a body that is moving with Which description is most consistent with the graph? A) Anne started her trip on a country road. She stopped for lunch just before getting onto a superhighway for the rest of her trip. B) Anne drove briefly on a superhighway, then on a country road, and finished her trip on a superhighway. C) Anne started her trip on a superhighway. She stopped for lunch just before getting onto a country road for the rest of her trip. D) Anne drove briefly on a country road, then on a superhighway, and finished her trip on a country road. A) increasing acceleration B) decreasing acceleration C) increasing speed D) constant speed 28. The graph at the right represents the relationship between distance and time for an object in motion. During which interval is the speed of the object changing? A) AB B) BC C) CD D) DE
5 29. The displacement-time graph below represents the motion of a cart along a straight line. During which interval was the cart accelerating? A) AB B) BC C) CD D) DE 30. An object originally at rest is uniformly accelerated along a straight-line path to a speed of 8.0 meters per second in 2.0 seconds. What was the acceleration of the object? A) 0.25 m/s 2 B) 10. m/s 2 C) 16 m/s 2 D) 4.0 m/s 2
6 Answer Key Science 7 Quarterly More Practice 1. B 2. A 3. B 4. B 5. D 6. D 7. C 8. A 9. D 10. C 11. A 12. B 13. D 14. A 15. D 16. C 17. D 18. D 19. D 20. C 21. B 22. A 23. B 24. C 25. A 26. D 27. D 28. D 29. A 30. D
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