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1 st Six weeks Exam

1 st Six weeks Exam. Oral Version. 1. Which of the following does the information in the picture support?. a. Candles cause fire? c . corks put out fires b. Fires warm glass d . Fires need air.

shoshana-klein
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1 st Six weeks Exam

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  1. 1st Six weeks Exam Oral Version

  2. 1. Which of the following does the information in the picture support? a. Candles cause fire? c. corks put out fires b. Fires warm glass d. Fires need air.

  3. 2. A student wants to find out which type of soil holds the most water. He uses four identical pots with holes in the bottom. He fills each pot with a different type of soil and waters the pots with the same amount of water. How can he find out how much waters stayed in the soil of each pot?

  4. Use this experiment for # 3-4 Students measures and place 10g of baking soda in a beaker containing 100 ml of water. They stir the mixture until the baking soda is dissolved. Students measure and place 10 g of lemon juice into another beaker containing 100mlof water, and stir until the two are mixed. The student measure and record the temperature of each solution. Then they combine the two solutions and gently stir them together. The students measure and record the temperature of the mixed solution five minutes after the liquids are combined and again sixty minutes. The data from the experiment is shown below. 3. What is a possible hypothesis is being tested during this experiment? 4. What lab equipment is required for the experiment above?

  5. According to the graph above, at what ocean depth would • the pressure be equal to eleven atmospheres? • What unit of measurement was used for the • dependent variable in the graph of question number 5? • a. Meter c. Atmosphere • b. Pressure d. Celsius

  6. 7. The change in CO2 concentration is shown in the • graph above. What trend is evident from the data in the graph?

  7. 8. You noticed that after exercising vigorously, your muscles often become sore. You research found that lactic acid build up in muscles can cause soreness. Based on this information, which choice is a logical hypothesis to explain this observation?

  8. 9. Some students were studying properties of water. One student placed a cup containing 80 mL of water in a freezer. Another student placed an identical cup containing 40 mL of water in a different freezer. Which of the following will be the same for both cups of water? a. The temperature at which the water freezes. The mass of the frozen water. c. The time it takes the water to freeze. d. The volume of the frozen water.

  9. A student will measure and record the height of the two flowering plants every day for 10 days. According to the information and diagram above, which question or problem is the student trying to solve? a. Do flowering plants grow better when watered with salt water? b. How much water do flowering plants need? c. Does fertilizer added to the soil lead to taller flowering plants? d. How tall do flowering plants grow?

  10. 11. In the flowering plant scenario above, what is the dependent variable? a. Fertilizer c. Amount of water b. Plant height d. Type of plant

  11. 12. The chart above shows the results of an experiment designed to study how exercise affects heart rate. Which of the following statements is the best conclusion for this experiment? • Exercise triples a person’s heart rate. • Exercise decreases a person’s heart rate. c. Heart rate is not affected by exercise. d. Heart rate is increased by exercise.

  12. On your test paper write the procedures you would follow to determine which glass contains the salt water. 13. If a student had a glass of pure water and a glass of salt water that looked exactly alike. Explain what the student could do, WITHOUT TASTING THE WATER, to determine which glass contains the salt water?

  13. 14. What is the reading on the triple beam balance above? (include units)

  14. After a laboratory procedure during which beakers • were heated, a student sees an empty beaker on thetable. • What is the safest way for the student to move the beaker?

  15. 16. The lab instructions tell the student to measure out 50 mL of the peroxide solution, which tool below would allow the student to complete the task?

  16. When deciding which paper towel is “best”, which question below would be a testable investigation? a. Which towel feels softer? b. Which towel absorbs more water? c. Which towel has prettier designs? d. Which towel has a neat name?

  17. 18. If the following safety symbol is shown on the lab sheet, what precaution should the student take? a. Avoid electricity c. protective aprons b. Keep away from food d. goggles should be worn

  18. 19. A student is doing an investigation that involves the use of chemicals. Which of the following behaviors should the student avoid while in the lab?

  19. 20. Two students are pushing the cart, as shown above. The cart will move as if it were acted on by a single force with what magnitude (net force)? a. 50 N c. 150 N b. 200 N d. 350 N

  20. Four forces are acting on the box, as shown above. Due to the unbalanced forces, the box will accelerate in which directions? a. Upward and to the right c. Downward and to the right b. Upward and to the left d. Downward and to the left

  21. 22. Carmen set a square piece of glass atop a beaker. She placed a metal cube on top of the glass. In one quick motion, she pulled the piece of glass away. What will happen to the metal cube and why? • The metal cube will fall into the beaker due to the unbalanced gravity force. b. The metal cube will remain in place because the forces will be equal. c. The metal cube will fall into the beaker because the force of inertia is equal to gravity. d. The metal cube will remain in place due to unbalanced forces.

  22. What changes could be made to the rollercoaster above to INCREASE the speed going down the hill? a. Decrease the height of the ramp. c. Decrease the steepness of the drop b. Increase the length of the ramp. d. Increase the steepness of the drop.

  23. 24. A party balloon is tied to the back of a chair. A fan is blowing across the room with a force of 2 Newtons. A child is blowing on the other side of the balloon with a force of 1 newton. In what direction will the balloon move? a. The balloon will move to the left. c. The balloon will move to the right. b. The balloon will move upward. d. The balloon will move downward.

  24. 25. Which graph below matches the data table above?

  25. 26. Which illustration below correctly shows the skateboard’s direction of motion after the student throws the ball forward

  26. Use the following information to create a graph (#27-32)A student has been training for a marathon. She has been increasing her time every day and measuring the distance she can go. She has collected data for several days and need to create a graph to calculate her speed and look for trends in her running pattern. Use her data listed below to create a line graph on your test paper.

  27. USE THE GRAPH YOU CREATED TO ANSWER THE FOLLOWING QUESTIONS. • At what time marker did the student stop running? • Between which two markers was the student running her fastest? 35. Using the formula above, what was the students speed at the 50 minute mark? Km/minute

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