1. 6 th & 8 th Grade SOL Review Texas Test Questions

2. 1. The picture shows sand used to make a model of a galaxy. In the model, each grain of sand best represents — 12345 A. A comet B. A black hole C. An asteroid D. A star

3. 2. The diagram shows the orbit of the moon around Earth. Between which two points will the moon appear to change from a new moon to a quarter moon? 12345 A. Q & R B. R & S C. S & T D. T & Q

4. 3. Which of the following most promotes chemical weathering in limestone? 12345 A. Freezing water B. Blowing wind C. Running water D. Growing roots

5. 4. Which of the following best represents stored potential energy? 12345 A. Air leaking from a flat tire B. Stress built up in a rock fault C. Heat given off by a forest fire D. Water flowing through a hose

6. 5. Which letter in this model of a boron atom represents a neutron? 12345 A. W B. X C. Y D. Z

7. 6. The transfer of carbon that results from burning fossil fuels will most likely affect Earth in the future by — A. Raising the average global temperature B. Reducing evaporation rates of ocean water C. Decreasing the total mass of plant life D. Making air transparent to UV light 12345

8. 7. Which set of equipment would be used to measure the boiling point of a liquid? 12345 A. Balance, thermometer, stopwatch B. Test tube, hot plate, balance C. Stopwatch, test tube, microscope D. Beaker, hot plate, thermometer

9. 8. Diesel fuel is used in the engines of the machines and trucks at the quarry. Which of these is the main energy transformation as the fuel is used by the engines? 12345 A. Electrical to heat energy B. Heat to potential energy C. Electrical to kinetic energy D. Chemical to kinetic energy

10. 9. What is the volume of the liquid in the graduated cylinder? 12345 A. 40 mL B. 43 mL C. 43.5 mL D. 44 mL

11. 10. Some data about the atmosphere of Mars are shown below. What conclusion can be made about the ability of humans to breathe Martian air? 12345 A. Life support will be needed because the % of oxygen is too low B. It will be impossible to breathe because the % of nitrogen is too low C. Oxygen & nitrogen will make it possible for photosynthesis to produce food D. Humans will be able to breathe the air because oxygen is present

12. 11. The model below is set up to show how a lunar eclipse occurs. What is the greatest limitation of this model? 12345 A. The lightbulb is standing straight up instead of tilted on its axis B. Comparative sizes & distances are inaccurate C. The shadow is being cast in the wrong direction D. The heat released is much less than that released by the sun

13. 12. In the diagram above, at which point are the sound waves being generated? 12345 A. R B. S C. T D. U

14. 13. The graph shows the movement of a car over time. What is the car’s average speed? 12345 A. 10 k/h B. 15 k/h C. 30 k/h D. 60 k/h

15. 14. One of the reactions involved in obtaining pure copper (Cu) from copper-containing rock is. Which of the following best describes the reaction? 12345 A. Copper atoms are used to produce more atoms B. Elements are rearranged into new substances C. Atoms of other elements are turned into copper atoms D. Compounds change phase from liquid to gas

16. 15. At which point on the roller coaster will the car have the greatest amount of kinetic energy? 12345 A. W B. X C. Y D. Z

17. 16. Which energy transformation occurs when a match is lit? 12345 A. Chemical to heat energy B. Heat to potential energy C. Electrical to heat energy D. Kinetic to potential energy

18. 19. The picture shows the results of an experiment to investigate the effect of light on plant growth. The conclusion is weakened by the — 12345 A. Slope of the soil B. Color of light source C. Flow of air in & out of room D. Length of time for experiment