Fluids Matter (Exam Part 1)

Transcription

1 Name: Class: _ Date: _ Fluids Matter (Exam Part 1) /50 Marks True/False Indicate whether the sentence or statement is true or false. 1. In our first lab experiment, the purpose was to: Propel an empty bottle a distance of at least.25 metres without tossing, throwing, kicking, hurling, slinging, tossing Liquids and Gases are 'Fluids' in that their molecules have the abilty to move over and around each other. 3. Liquids will find their own level in a container and take the shape of the container 4. Liquids have a definite, constant volume at a specific temperature, but no definite shape. 5. Liquids are considered to be incompressible. 6. The molecular attractive forces in liquids is less than those of solids (which have strong inter-molecular attraction). 7. 'Fluids' are substances that have the 'Ability to Flow'. 8. Viscosity is a measure of resistance to flow or how easily a fluid can change its shape. 9. Dropping a sphere in a liquid is one of the oldest and easiest ways to measure viscosity. 10. Your home lab experiment to test how the viscosity of honey changes with temperature is due Day One of this week. Multiple Choice (One point each) Identify the letter of the choice that best completes the statement or answers the question. 11. In preparation for this test, I performed the following: a. Completed all my science Big Idea d. Consulted teachers question work and web quests b. Attended all classes, remained attentive e. All of the above. and participated well in all classes c. Followed all classroom lab rules, cooperated with peers and teachers 12. What is a fluid? a. Anything that takes up space c. Materials that have no fixed shape and are free to flow. b. Materials that have a fixed shape, but d. A liquid or a gas flow freely 13. We live in a world of fluids, but not all fluids are liquid. a. True c. Kind of. b. False d. Both A and B. 14. Fluids are all around us. Some are transported vast distances through a network of pipes and conduits. a. True b. False 1

2 Name: 15. What fluids are essential to life? a. oxygen, blood, sweat, saliva, urine, stomach acid c. oxygen, blood, sweat, tears, saliva, urine, stomach acid b. hydrogen,, blood, sweat, saliva, urine, stomach acid d. gasoline, blood, sweat, saliva, urine, stomach acid 16. The particle theory of matter helps explain why fluids act the way they do. It states that... a. all fluids matter c. all matter is made up of tiny particles that move randomly all the time b. all matter is made of tiny materials that d. particles don t attract each other have empty spaces between them 17. How are gases and liquids different? a. They are both not fluids c. particles are less tightly packed within gases than in liquids. d. particles move freely within gases than in liquids. b. particles are more tightly packed within gases than in liquids. 18. What are three principle properties of fluids? a. Viscosity, density and solutions c. Viscosity, density and compressibility b. Density, flow rate, heavy than gas d. All of the above. 19. A 2.0 ml sample of a liquid has a mass of 12g. What is its density? D = g/ml a c. 15 b. 6 d The viscosity experiment conducted by Brad, Braydon, James and Dante, filmed by Shona, observed by Sydney S. and made available to view on the school network attempted to show that the..viscosity of liquids can be compared by observing their... a. clarity. c. resistance to flow. b. volume. d. resistance to acceleration. 21. Viscosity is the term we use to describe the that a fluid has to flowing & moving! a. motion c. flow rate b. resistance d. consistency 22. In our marble lab conducted last class, for a marble to fall through a fluid, the fluid has to... a. change shape to let the marble through. c. have a higher flow rate than normal b. be viscuous to allow the marble to pass d. be at a higher temperature. through 23. In order for a fluid to have a lot of resistance to changing their shape so the marble takes longer to fall, it has to have what type of viscosity? a. high b. low 24. The equation used to calculate the true weight of an object is as follows: a. w = m (kg) X 9.8 Newton/g where m c. w = m (kg) X 9.8 Newton/kilograms = the mass of an object where m is the mass of the object b. w = m (kg) X 9.8 Newton/kilograms where mass is the weight of the object 25. Fluids can be divided into two main patterns: a. laminated and turbulent c. turbulent and displacement b. laminar and turbulent 2

3 Name: 26. All liquids and are fluids. A fluids is anything that _. a. solids, moves c. mixtures, flows b. gases, flows d. solutes, mixes. 27. Matter is anything that has both and. Mass is the mount of a substance has. a. mass, volume, matter c. volume, matter, mass b. volume, matter, mass d. liquid, solids, matter flouride based paste substance contained in tubes.used everyday for dental care. is an example of the following: a. Description and importance of fluids in c. A sample taken from a survey our lives b. A qualitative observation based upon d. A fact. Simple as that. experimentation 29. Water flows very easily so we say it has a. a. high viscosity c. low viscosity b. high flow rate d. poor flow rate 30. Oil has a than water and honey has a very high viscosity at room temperature so these fluids tend to flow more slowly than water. a. lower viscosity c. uneven consistency b. laminar flow d. higher viscosity 31. The viscosity of what natural phenomenon is important in working out how it will behave and can be used to explain its ever growing shape? a. honeycombs c. earthquakes b. volcanoes d. sea monkeys 32. The following device is called: a. The laminar flow pump c. The flow rate regulator b. The Archimedes screw pump d. The Democritus Flow Pump 33. In order to increase the speed of flow of oil in a pipeline, the oil should be... a. cooled c. diffused b. heated d. compressed 34. Fluid A has a flow rate of ml, per second. Fluid B has a flow rate of ml, per second. Compared to fluid A, fluid B is... a. more viscous c. more dense b. less viscous d. less dense 3

4 Name: 35. The shape shown below travels through a fluid. This shape would experience the most drag if it were moving in direction... a. 1 c. 3 b. 2 d When someone starts the cold car in the morning, they may mention that the viscosity of the motor oil would be decreased by... a. running the engine c. changing the antifreeze b. changing the oil d. charging the battery 37. Steam is injected into tar sand formations to facilitate the extraction of oil. The oil separates from the sand so that it can be pumped out of the ground. The steam causes the oil to separate from the sand because viscosity... a. decreases when there is an increase in c. increases when there is an increase in water content b. decreases when there is an increase in temperature temperature d. increases when there is an increase in water content Problem 38. Which of the following can be accredited to Archimede s accomplishments in science? Check off all that apply below: was a Greek mathematician, physicist, engineer, inventor, and astronomer. regarded as one of the leading scientists in classical antiquity. Among his advances in physics is the explanation of the principle of the lever. credited with designing siege engines and the screw pump that bears his name. 39. Arrange the procedure for your Marble Drop Experiment in the correct order. Write the NUMBER beside the procedural step below: _Use the funnel to fill one container with water, the second with oil and the third with honey. _What is being demonstrated in this lab? _What could you do to the honey to make the marble fall faster? _Watch how each fluids travels down the funnel. Can you make a prediction of what will happen in this lab? _Test how fast the marbles fall through each fluid by turning the containers upside down. _Drop a marble into each container and screw the lids on firmly. _Which marble falls the fastest? _Can you think of a way to time the falling of the marbles? 4

5 Fluids Matter (Exam Part 1) Answer Section /50 Marks TRUE/FALSE 1. ANS: T 2. ANS: T 3. ANS: T 4. ANS: T 5. ANS: T 6. ANS: T 7. ANS: T 8. ANS: T 9. ANS: T 10. ANS: T MULTIPLE CHOICE 11. ANS: E 12. ANS: C 13. ANS: A 14. ANS: A 15. ANS: A 16. ANS: C 17. ANS: C 18. ANS: C 19. ANS: B 20. ANS: C 21. ANS: B 22. ANS: A 23. ANS: A 24. ANS: C 25. ANS: B 26. ANS: B 27. ANS: A 28. ANS: A 29. ANS: C 30. ANS: D 31. ANS: B 32. ANS: B 33. ANS: B 34. ANS: B less viscous (Text p. 48) If the liquid flows faster, it is lessviscous 1

6 35. ANS: C 36. ANS: A 37. ANS: B PROBLEM 38. ANS: All of the above. 39. ANS: