Semester One Test Review

Transcription

1 Semester One Test Review Net Forces a. 5N 2N b. 5N 3N c. 3N 3N d. 2N 4N 2N 1. Which forces diagrams above show a Net Force of zero? a. All of them b. None of them c. c only d. c and d 2. Which force diagrams show forces that will result in a change in motion? a. A and b b. A, b, and d c. C only d. All of them 3. Which force diagram shows a Net Force of 8N to the right? a. A b. B c. C d. D 4. If the object in the force diagrams has a mass of 2 kg, what acceleration results from the forces shown in force diagram a? a. 6 m/s 2 b. 7 N c. 3.5 m/s 2 d. 1.5 m/s 2 Acceleration Practice A and B are data tables of a remote control cars speed over 4 seconds of time. Use this data to answer the following questions. 5. In Practice B, how fast was the car going after 3 seconds? A. 6 meters/ seconds B. 4 meters/ seconds C. 2 meters/ seconds D. 0 meters/ seconds 6. In Practice A, how long did it take the car to reach 6 m/s? A. 2 seconds B. 3 seconds C. 4 seconds D. 6 seconds

2 7. In Practice B, what was the car doing over those 4 seconds? A. speeding up B. slowing down C. keeping a constant speed D. free falling 8. How would you calculate the acceleration of this car in Practice B? A. (4s) / 0 m/s B. (0 8 m/s) / 4 s C. (4s) / 8 m/s D. (8 m/s 0) / 4 s 9. What is the acceleration of the car in Practice A? A. 32 m/s/s B. 8 m/s/s C. 4 m/s/s D. 2 m/s/s Speed 10. According to Figure 1.b, what is happening to the soccer ball? A. the ball is moving with a constant speed B. the ball is slowing down C. the ball is speeding up D. the ball is speeding up then stopped Figure 1.a 11. Figure 1.a shows the graph of a falling object. What probably happened? A. At 2 seconds the object fell off of a cliff B. At 2 seconds a parachute opened on the object. C. At 2 seconds the object hit the ground and stopped moving. D. At 2 seconds the object stopped going up and started going down. 12. Which of the graphs, in Figure 1.c, shows an object with a high acceleration? A. Graph A B. Graph B C. Graph C D. Graph D 13. Using the speed-time graph (Figure 1.a), how fast was the ball moving after 1 second? A. 1 m/s B. 5 m/ C. 10 m/s D. 20 m/s

3 14. Using Figure 1.c, which graph shows an object with no acceleration at all? A. Graph A B. Graph B C. Graph C D. Graph D 15. According to Newton s first law of motion, a moving object that is not acted on by an unbalanced force will a. remain in motion. c. change its momentum. b. eventually come to a stop. d. accelerate. 16. An ice skater at rest pushes against a sled at rest, causing both the skater and sled to move away from each other with different accelerations. This is an example best described by a. Newton s first law of motion for objects at rest. c. Newton s second law of motion. b. Newton s first law of motion for objects in d. Newton s third law of motion. motion. Scientific Method Match the step with the process: 17. hypothesis Figure 1.c 18. materials 19. purpose 20. conclusion 21. procedures 22. analysis / data A. step by step instructions to run an experiment B. what you decided happened during your experiment and whether your hypothesis was correct C. what you are wanting to learn D. data tables, pictures and written notes taken while conducting the experiment E. detailed list of items needed to conduct the experiment F. prediction of the answer to your problem based on prior knowledge

4 Reading Measurements Match the volumes below to the graduated cylinders: A. 33mL B. 7mL C. 38mL D. 40mL E. 20mL Match the correct weight(g) to the correct balance 29 A g B g C. 376g 30

5 Qualitative / Quantitative Measures The answer for the statements below will either be A for Qualitative or B for Quantitative 31. The rock is shiny. 32. There are rough edges on the table. 33. The elephant weighs a ton. 34. The clouds were dark and flat. 35. The object had 15 sides

6 38. A pure substance is a. solution b. single compound that has definite chemical properties c. a pure substance that can not be broken down. d. a combination of two substances that are not chemically combined 39. What is not a physical characteristic used to identify an element? a. Melting point b. Boiling point c. Density d. Mass 40. A mixture is a. made of two or more elements joined together by a chemical force b. a solution that can only be separated by chemical means. c. a combination of two or more substances not chemically combined d. a solution is a compound consisting of two or more elements. 41. Find Titanium on the periodic table in your notebook. How many protons does Titanium have? a. 22 b c. 26 d How many electrons does Titanium have? a. 22 b c. 26 d How many neutrons does Titanium have? a. 22 b c. 26 d Compounds are broken down by a. chemical means b. physical means c. filtering d. sifting the compound through a strainer 45. A compound is a. A substance made up of two or more atoms joined by a chemical reaction. b. Two substances not chemically combined. c. A substance that cannot be separated even by a chemical reaction. d. Two substances that can be joined together by physical means.

7 46. A molecule is a. the smallest particle of an atom b. a group of atoms held together by chemical means c. a subatomic particle with a negative charge. d. has not charge and lives in the nucleus. 47. A proton is a. subatomic particle negative in charge located in the nucleus b. subatomic particle neural in charge located in the nucleus c. subatomic particle positive in charge located in the nucleus d. Found hovering outside the nucleus in a proton cloud. 48. A group or family on the periodic table a. is the horizontal rows and determine a repeating pattern. b. The vertical columns on the periodic table that determines a repeating pattern. c. vertical column on the periodic table where the elements share chemical properties. d. The horizontal rows which determines the physical and chemical characteristic 49. An electron is a. a subatomic particle of an atom with a neutral charge. b. a subatomic particle of an atom with a negative charge c. a subatomic particle of an atom with a neutral charge. d. Hovers inside the nucleus of an atom. 50. What is a neutron? a. A subatomic particle of an atom that has a negative charge located outside the nucleus. b. A subatomic particle of an atom that has a positive charge located inside the nucleus c. A subatomic particle of an atom that has a no charge located outside the nucleus. d. A subatomic particle of an atom that has a no charge located inside the nucleus. 51. What is the nucleus of an atom a. The atoms central region which is made up of protons and electrons. b. The atoms central region which is made up of neutrons and electrons. c. The atoms central region that is made up of isotopes and electrons. d. The atoms central region that is made up of neutrons and protons 52. Define the term electron cloud. a. The nucleus where electrons can be found. b. The region hovering around the nucleus where electrons are likely to be found. c. The region hovering around the nucleus where protons are likely to be found. d. The region hovering around the nucleus where neutrons are likely to be found. 53. The atomic mass unit (AMU) measures what? a. The unit of measurement that describes the mass of an atom or molecule. b. The American metric unit of measurement used to weigh atoms. c. Scale used to weigh metals on the periodic table, thus the name, Atomic Metal Unit of measurement. d. A universal way to weigh stuff.

8 54. Horizontal rows on the periodic table are called a. Groups b. Families c. Periods d. Intervals. 55. Periods increase in atomic number from a. top to bottom b. diagonally c. left to right d. chemical reactions 56. When you dissolve salt into water the salt is the a. Solvent b. Solute c. Solution d. solubility 57. A solution a. is a compound b. A homogenous mixture of two or more substances uniformly dispersed throughout a single phase. c. Pure substance d. Polymers combined 58. Where are metals found on the periodic table? a. To the right of the zigzag line b. On the border of the zigzag line c. To the left of the zigzag line d. Scattered throughout the periodic table 59. Which of the following is not true about metals? a. Bad conductors of electricity and heat b. Solid at room temperature c. Shiny d. Ductile 60. Which would you use to determine the mass of an object? A. Meter stick B. Graduated cylinder C. Bathroom scale D. Triple beam balance 61. Which would you use to find the volume of a rectangular cube? A. Meter stick B. Graduated cylinder C. Bathroom scale D. Triple beam balance 62. Which would you use to find the volume of an irregularly shaped rock? A. length x width x height B. water displacement C. direct measurement D. a triple beam balance

9 63. What is the volume of this cube? A. 9 cm² B. 12 cm³ C. 24 cm³ D. 36 cm³ 64. A rock is dropped into a graduated cylinder containing 40 ml of water. The new volume is 47 ml. What is the volume of the rock? A. 4 ml B. 7 ml C. 47 ml D. 87 ml 65. What is the volume of the liquid in this graduated cylinder? A. 30 ml B. 32 ml C. 34 g D. 40 ml Use the illustration on the right to answer the next two questions. It shows the densities of some common substances. The black cube is made of plastic. 66. Which substance is most dense? A. black cube B. alcohol C. water D. corn syrup 67. What do you know about the density of the black cube? A. it is less dense than the alcohol and the water B. it is more dense than the corn syrup and the water C. it is more dense than the water and less than the corn syrup. D. it is more dense than the corn syrup and less dense than the alcohol.

10 Picture A shows an egg in fresh water and picture B shows an egg in salt water. Use this data to answer the next two questions. A B 68. Why does the egg sink in fresh water? The egg is A. less dense than the fresh water B. more dense than the fresh water C. more dense than the salt water D. the same density as both types of water 69. Based on the eggs, why is it easier to float on the Great Salt Lake than a fresh water lake? Your body is A. less dense than the lake water B. more dense than the lake water C. the same density as the lake water D. warmer than the lake water 70. Why does ice float on water? A. it is colder than water B. it is less dense than water C. it is harder than water D. it is lighter than water 71. Which is the correct formula for density? A. Volume times mass B. Mass times weight C. Volume divided by mass D. Mass divided by volume 72. If the mass of a cube were 48 g, and its volume 24 cm 3, what would its density be? A..5 g/ cm 3 B. 2 g/ cm 3 C. 4 g/cm 3 D. 6 g/cm 3

11 ml of salt water has a mass of 120 g. What is the density of the salt water? A..75 g/ml B. 1.3 g/ml C. 3.0 g/ml D. 9.0 g/ml 74. Which of the following statements best summarizes the relationship between mass, volume and density. A. Density is the amount of mass in a certain volume of matter. B. Density is the heaviness of an object for its weight. C. Density is the size of an object for its volume. D. Density is the mass added to the volume of an object. 75. If each dot in the cube is a particle of with the same mass, which cube has the greatest density and why? A B C D A. A, it has the fewest particles for the volume of the cube. B. B, it has the most particles for the volume of the cube. C. C, it has the greatest volume for the mass of the cube. D. D, it has the most particles for the volume of the cube. 76. A student lifts two soup cans that are the same size. He says that one is heavier than the other. What do you know about the heavier can? A. it has more volume than the lighter one B. it has more mass per unit volume C. it has larger chunks of vegetables in it D. it is less dense than the lighter one

12 Use the descriptions of two different experiments to answer the next three questions: Experiment X Students find the mass of a test tube of water, a fizzing tablet and a beaker. They add the tablet to the water, it bubbles and they collect the gas in a graduated cylinder. They mass the water and the beaker again and subtract this mass from the first. They divide the change in mass by the volume of gas they collected in the graduated cylinder. Experiment Y Students mass an empty balloon, filled it with a gas and massed it again. They measured its volume by placing it in a full container of water that overflows. They collected the overflow and find the volume the balloon displaced. They find the mass by subtracting the mass of the balloon empty from its mass when it is full of gas. Then they divide the mass by the volume. 77. What would be the best title for these experiments? A. Foiled Again, the Gases Escaped B. How to Measure a Gas C. Finding the Density of A Gas D. What About Gasses? 78. Which experiment used the scientific method? A. X, there were fewer steps B. X, it used more accurate equipment C. Y, it used the correct formulas D. X and Y both used the scientific method 79. What would you expect the results of the two experiments to show? A. The density of a gas is very small. B. Gases are very dense. C. Gases cannot be measured. D. One gas will be a darker color than the other.