What is the maximum mass, in grams, that could be measured by this balance?

Transcription

1 1. A student examined a rock sample and described it as having particles of various colors that were 1 millimeter to 12 millimeters in size. The student was making (1) an inference (3) a prediction (2) a hypothesis (4) an observation 2. The diagram below shows a triple-beam balance. What is the maximum mass, in grams, that could be measured by this balance? (1) 110 (3) 610 (2) 500 (4) The diagram below shows Earth at four locations in its orbit around the Sun. Which motion do the arrows in the diagram represent? (1) Earth s rotation (3) Earth s revolution (2) the Sun s rotation (4) the Sun s revolution

2 The data table below shows some data related to the Sun and the planets in our solar system 4. The distance between the Sun and Saturn is approximately six times the distance between the Sun and which other planet? (1) Earth (3) Mars (2) Jupiter (4) Venus 5. The photograph below shows an object in space that has an icy core with a tail of gas and dust extending for millions of kilometers. The object is most likely (1) a star (3) a moon (2) an asteroid (4) a comet

3 6. A student placed a rock in a graduated cylinder containing water, causing the water level in the cylinder to increase by 20 ml. This increase represents the rock s (1) mass (3) solubility (2) volume (4) temperature 7. The diagram below shows water in a graduated cylinder. A student states that the graduated cylinder contains 150 ml of water. This statement is (1) a prediction (3) a theory (2) an observation (4) a hypothesis 8. The diagram below shows 20 grams of two different materials, A and B, on a laboratory balance. Since material A and material B have the same mass but different volumes, material A must have a different than material B. (1) density (3) phase (2) weight (4) shape

4 9. The Sun appears larger than other stars because of it s 1.) yellow color 2.) high temperature 3.) distance from Earth 4.) chemical composition 10. Force is measured in the units called (1) kilograms (3) newtons (2) grams (4) meters per second 11. Which statement is an inference? (1) A thermometer shows that the air temperature is 56 F. (2) A mineral sample of galena is the color grey. (3) Based on previous data, ten hurricane may occur in the year (4) The volume of the water in a graduated cylinder measures 25ml.

5 The graph below shows a runner s distance from the starting line during a 30-minute race. Distance was measured in meters (m). Time was measured in minutes (min). 12. During which time interval was the runner moving at the greatest average speed? (1) 0 5 minutes (3) minutes (2) minutes (4) minutes Note that question 13 has only three choices. 13. If the force used to push a shopping cart increases, the cart s acceleration will (1) decrease (2) increase (3) remain the same 14. The top and bottom of each container below are labeled. Which model best represents the arrangement of gas molecules inside a sealed container as viewed from the side?

6 15. Because copper is a metal, it is (1) liquid at room temperature (2) nonreactive with other substances (3) a poor conductor of electricity (4) a good conductor of heat 16. A runner accelerates at the end of a race. What could be the unit used for acceleration? (1) m/s (3) km/min (2) m/s 2 (4) m 17. Which form of energy is produced when a rubberband is stretched? (1) kinetic (3) electrical (2) light (4) potential 18. A battery-powered cart pulls an 800-gram load across the floor. If the load were reduced to 400 grams, and the force used to move the cart remained the same, the cart would (1) move slower (2) move faster (3) move at the same speed (4) stop moving 19. A lamp converts electrical energy to light energy. In addition to the light energy, much of this electrical energy is also converted to (1) mechanical energy (3) heat energy (2) chemical energy (4) nuclear energy

7 20. One example of matter is (1) magnetism (3) water (2) heat (4) radiation 21. Which energy resource is considered non-renewable? (1) solar energy (2) fossil fuels (3) geothermal energy (4) hydroelectric power 22. Which force will decrease if the surface of the ramp is made smoother? (1) gravity (3) friction (2) magnetism (4) electricity 23. Which process transfers heat when particles collide in a solid? (1) convection (3) radiation (2) conduction (4) evaporation 24. In a car accident, a seat belt helps prevent injuries by applying a force (1) less than the force of the moving passenger (2) greater than the force of the moving car (3) in the same direction as the car's motion (4) in the opposite direction of the passengers motion 25. The force of gravitational attraction between two objects depends on the distance between the objects and their (1) buoyancies (3) masses (2) temperatures (4) shapes

8 26. A ball is dropped from the roof of a building. Points A, B, C, and D in the diagram below represent positions of the ball as it falls. At which position will the ball have the greatest kinetic energy? (1) A (3) C (2) B (4) D 27. The graph below shows population data for one kind of insect over a 50-year period. Which statement best describes the population of this insect over the 50-year period? 1.) It decreased steadily 2.) It increased steadily 3.) It remained constant 4.) It followed a cyclic pattern

9 Use the diagram below to answer the following questions: 8 N 3 N 5 N 28. What is the net force of the circular object? (1) 8 N to the right (3) 0 N (2) 15 N to the right (4) 2 N to the right 29. How many forces are represented above? (1) 16 (3) 2 (2) 3 (4) Which of Newton s Laws of Motion explains most accurately why a pitched baseball travels faster than on that is gently thrown? (1) Newton s 1 st Law of Motion (2) Newton s 2 nd Law of Motion (3) Newton s 3 rd Law of Motion (4) Newton s 4 th Law of Motion

10 A= 0.85 g/cm 3 B= 1.0 g/cm 3 C= 1.29 g/cm 3 D= 2.34 g/cm James created the beaker above by carefully placing four different liquids into a beaker. If James were to drop an object with a density of 1.14 g/cm 3 into the beaker, on which layer would the object float? (1) Layer A (3) Layer C (2) Layer B (4) Layer D 32. James removed the solid object from the beaker, cut it in half, and then slid it back into the beaker. On which layer would the object float? (1) Layer A (3) Layer C (2) Layer B (4) Layer D 33. Assume that the mass of Layer D is 12.9 g, what is the volume of layer D? (1) 30.2 ml (3) 0.2 cm 3 (2) 5.5 cm 3 (4) 15.2 ml

11 Questions As the air above the candle is heated, the density of the air (1) increases (3) decreases (2) remains the same (4) doubles 35. The pattern of airflow above illustrates (1) convection currents (3) a chemical reaction (2) a phase change (4) an electromagnetic cycle 35. How do distant galaxies usually move? (1) Galaxies move toward one another. (3) Galaxies move randomly (2) Galaxies move away from one another. (4) Galaxies do not move

12 The diagram represents our solar system. 36. According to the diagram: 1. Only planets revolve around the Sun. 2. Planets and comets revolve around the Sun. 3. Planets, comets, and asteroids revolve around the Sun. 4. The Sun, planets, comets and asteroids revolve around Earth. 37. How does Earth's age compare to the Universe's age? 1. Earth is about the same age as the universe. 2. The universe is much younger than Earth. 3. The Earth is much younger than the universe. 4. The two ages have not been determined. 38. A major belt of asteroids is located an average distance of 503 million kilometers from the Sun. Between which two planets is this belt located? 1. Mars and Jupiter 2. Mars and Earth 3. Jupiter and Saturn 4. Saturn and Uranus

13 39. The planets known as "gas giants" include Jupiter, Uranus, and 1. Pluto 2. Saturn 3. Mars 4. Earth 40. Which diagram represents a geocentric model? [Key: E = Earth, P = Planet, S = Sun] Compared to Jupiter and Saturn, Venus and Mars have greater 1. periods of revolution 2. orbital velocities 3. mean distances from the Sun 4. equatorial diameters 42. Most stars like the sun consist mainly of 1. Carbon 3. Hydrogen 2. Oxygen 4. Nitrogen

14 43. A car travels a distance of 98 meters in 10 seconds. What is the average speed of the car? m/s m/s m/s m/s The graph below shows the relationship between distance and time for an object. 44. What is the speed of the object at t = 5 seconds? 1. 0 m/s 2. 2 m/s 3. 5 m/s 4. 4 m/s 45. Which of the following is defined as a scientist s educated guess about a problem? 1. experiment 3. conclusion 2. hypothesis 4. fact

15 The diagram shows a portion of a 100-milliliter graduated cylinder. 46. What is the reading of the meniscus? (1) 35.0 ml (3) 44.0 ml (2) 36.0 ml (4) 45.0 ml Arlo measured a block of wood, as shown in the diagram. 47. What is the length of the wooden block in millimeters? (1 cm = 10 mm) mm mm mm 4. 2,600 mm

16 48. A hydroelectric power station, like the Hoover Dam, produces electrical energy from (1) nuclear energy (3) chemical energy (2) electrical energy (4) mechanical energy 49. What energy change occurs when a candle burns? (1) electrical to light and heat (2) chemical to mechanical and nuclear (3) chemical to light and heat (4) mechanical to light and heat 50. Nuclear reactions on the sun produce this type of energy which travels to the earth. (1) electromagnetic energy (3) mechanical energy (2) chemical energy (4) electrical energy

17 51, What property of the samples is represented by X 52. All of the quartz samples should have had the same density. State one error the student may have made during the experiment. [1]

18 The diagram below shows a rock being placed in a graduated cylinder containing water. 53. What is the volume of the rock? Note: 1 ml = 1 cm3. [1] cm3 The diagram below represents two people using a board and a log as a simple machine to lift a large rock. 54. What force must the people overcome in order to lift the rock?

19 Base your answer on the symbols below: 55. Construct one picture in the space below using the symbols above, and place them in the correct size order.

20 56. Explain how the diagram below shows inertia (Newton s First Law of Motion) 57. Base your answer on the data table above. The table shows the average height in cm and the average mass in kg for students age 8 to 16 years old in the United States in What is the relationship between the average mass of males and their age?

21 Base your answers to questions 58 and 59 on the diagram below and information below and on your knowledge of science. The diagram shows an experiment conducted to see how quickly water moves through different size particles of the same substance Two identical columns contained equal volumes of different-size particles. The same amount of water was added to the top of each column. A student timed how long it took for the water in each column to reach the wire screen. The data table below shows the results. 58. List two variables that were held constant in this experiment. (1) (2) 59. State one conclusion based on this experiment.

22 A B 60. Identify and explain which method shown above (A or B) requires the man to use less force to move the box into the truck. (Include the word friction in your answer)

23 Mattlin Middle School Science 8 Midterm Part 1: Multiple Choice January 2015 Name: Science Teacher (circle one): Ms. Burke Mr. Ward Science Period: Instuctions: Carefully read each question and choose the best answer. Mark your answers clearly on the scantron card.

24 Mattlin Middle School Science 8 Midterm Part 2 : Constructive Response January, 2015 Name: Science Teacher (circle one): Ms. Burke Mr. Ward Science Period: Instructions: Write your answers directly on the test paper.