Examen quimestral 2 noveno


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Examen quimestral 2 noveno

  1. 1. Science and Technology SCIENCE S e c o n d Q u i m e s t r a l E x a m Student´s Name: 9no de E.B.S. “____” Date: GRADE: _______/100 Teacher´s Name: Juan Francisco García INSTRUCTIONS: Before you start, read carefully each instruction. Take your time to answer. Check your spelling and grammar. The exam is graded over 100 points. Be sure to write down your full name on the space assign for it. Exams that do NOT have name will be graded as 01/10. During the test you cannot use any dictionary, electronic devices (except a scientific calculator) and it´s forbidden to ask for any other material. May the Force be with you Young Padawans! Criteria Assessment: Criteria C: Knowledge & understanding of Science Achievement Level IB Level Descriptor Student Friendly language 0 *SBP: Unsatisfactory The student does not reach a standard described by any of the descriptors given below. The student does not reach a standard described by any of the descriptors given. 1-2 SBP: Partially Proficient The student recalls some scientific ideas, concepts and/or processes. The student applies scientific understanding to solve simple problems. The student recalls some scientific ideas and concepts and uses these to solve simple problems. 3-4 SBP: Proficient The student describes scientific ideas, concepts and/or processes. The student applies scientific understanding to solve complex problems in familiar situations. The student analyzes scientific information by identifying parts, relationships or causes. The student describes scientific ideas and concepts and uses scientific understanding to solve complex problems in familiar situations. The student examines scientific information by identifying parts, relationships and causes. The student is able to analyze information that shows understanding. 5-6 SBP: Advanced The student uses scientific ideas, concepts and/or processes correctly to construct scientific explanations. The student applies scientific understanding to solve complex problems including those in unfamiliar situations. The student analyzes and evaluates scientific information and makes judgments supported by scientific understanding. The student uses scientific ideas and concepts and uses scientific understanding correctly to construct scientific explanations including those in familiar and unfamiliar situations. The student analyzes and evaluates scientific information and makes judgments supported by scientific understanding regarding the reliability of the ideas and the quality of work.
  2. 2. I. IN THE FOLLOWING SECTION, RELATE THE CONCEPTS TO THE CORRECT MEANING. (40 Points Total) 1. In the next table, write down the letter of the concept related to the correct meaning. (1 point each answer, 15 points total) CONCEPT MEANING LETTER A. MASS An anatomical structure of the heart B. WEIGHT Are the smallest of a body's blood vessels and are parts of the microcirculation. C. VELOCITY Emission and propagation and emission of energy in the form of rays or waves. D. CAPILLARY A form of energy associated with the motion of atoms or molecules and capable of being transmitted through solid and fluid media by conduction. E. HEMOGLOBIN Commonly refers to any of three properties of matter, which have been shown experimentally to be equivalent: Inertial mass, active gravitational mass and passive gravitational mass. F. PEPSIN Is the change in direction of a wave due to a change in its speed. G. ATRIUM Is a physical property of matter that quantitatively expresses the common notions of hot and cold. H. ALVEOLI Is a name for the reactive half of a repulsive force exerted on a body with a particular mass, by contact with, or support from, another body I. REFRACTION Enzyme that intervenes in the digestion of proteins in the stomach. J. REFLECTION Is the measurement of the rate and direction of change in position of an object. K. TEMPERATURE Is the change in direction of a wave front at an interface between two different media so that the wavefront returns into the medium from which it originated. L. RADIATION Is the iron-containing oxygen-transport metallo- protein in the red blood cells of all vertebrates. M. HEAT Change in the directions and intensities of a group of waves after passing by an obstacle or through an aperture whose size is approximately the same as the wavelength of the waves. N. ENZYME Any of numerous proteins or conjugated proteins produced by living organisms and functioning as biochemical catalysts. O. DIFFRACTION Are the dead ends of the respiratory tree, which outcrop from either alveolar sacs or alveolar ducts, which are both sites of gas exchange with the blood as well.
  3. 3. 2. Fill the blank of the following statements with the words that are missing. (1 point each answer, 25 points total) a. The _____________________ law of ___________________________ states that energy can't be created or destroyed, but you can convert it from one form to another. b. The double circulation system keeps______________________ and ______________________ blood separate. c. The left-hand side of the heart receives ________________ blood. d. Blood on the left-hand side of the heart is pumped to the _______________. e. Enzymes in saliva change starch into ___________________. f. Digestion begins in the ____________________. g. Another way of stating the second law of thermodynamics is to say that ________________________ or disorder tends to increase over time. h. Nuclear energy can be produce by to ways _____________________ and ____________________ of the atoms. i. _________________ _____________________ are materials that the body cannot use. j. The kidneys are part of the ________________________ system. k. The _______________________ system is a system of organs that brings oxygen into your body. l. Urine is composed of _______________, electrolytes, and waste products that are filtered out of the blood system. m. Each kidney contains about a million _________________ that form urine by three precisely regulated processes: ___________________, ______________________, and _________________________. n. A kg•m2/s2 would be a unit of ________________. o. Work is a form of _____________________. p. Moving objects can have _________________ energy. q. The unit of measurement for potential energy is the ____________________. r. ____________________ energy is all of the kinetic energy due to random motion of the particles that make up an object. II. IN THE FOLLOWING SECTION, SELECT THE CORRECT ANSWER FOR THE NEXT STATEMENTS. (45 Points Total) 3. TRUE OR FALSE. If the statement is True mark it with a T or False with an F. (1 point each answer, 20 points total) a) All matter has the property of mass, but not all mass is associated with identifiable matter. b) Which part of the eye has cells that change light energy to nerve impulses? → Retina. c) If an object is at rest, then it does not have any kinetic energy. d) The mechanical energy of an object is always conserved.
  4. 4. e) There are about three hundred million alveoli in your lungs. f) A falling object always gains kinetic energy as it falls. g) Electromagnetic spectrum → the total kinetic and potential energy of the particles in a substance. h) Insulator → materials such as metals that transfer heat easily. i) Kinetic energy is the form of mechanical energy which depends upon the position of an object. j) You have muscles attached to your ribs that help you breath. k) When you exhale, the muscles attached to the ribs contract and lift your chest wall upward. At the same time your diaphragm contracts and moves downward. l) The total amount of mechanical energy of an object is the sum of its potential energy and the kinetic energy. m) The Large Intestine is responsible for removing water from the undigested food, turning it from a liquid paste into solid waste. n) The urethra transports urine from the kidney to the urinary bladder. o) The word "inhale" means to "breathe out". p) The flap of tissue known as the epiglottis covers the trachea when you swallow and prevents food from traveling down the trachea. q) The palate forms the floor of the oral cavity. r) Air and food share sections of the pharynx. s) The walls of the alveoli and capillaries are very thick and therefore nothing can pass into or out of the alveoli or capillaries. t) Peristalsis is the wave like muscular contractions that propel food through the digestive system. 4. MULTIPLE CHOICES. Select the correct answer and make a circle around it. (1 point each answer, 25 points total) a. When the blood arrives at the heart, what happens first? i. atria gently contract ii. blood is pumped into aorta and pulmonary artery iii. ventricles contract strongly iv. blood flows into atria v. blood is pushed into ventricles b. Which structures found inside the heart ensure that blood can only travel in one direction? i. atria ii. ventricles iii. valves iv. sphincters v. tendons c. An untrained female swims a 100m freestyle race. How do her blood and heart adapt during the race to help improve her performance? Select all the options you think are correct. i. blood pressure decreases
  5. 5. ii. stroke volume increases iii. heart rate increases iv. blood flow is redirected to the brain v. blood flow redirected from organs to muscles vi. blood vessels in skin dilate d. When none of the colors of the spectrum are present the color is.. i. Black ii. White iii. Yellow iv. RGB e. Plants appear green because they... i. Absorb green light and reflect all other colors ii. Absorb all light except green - they reflect this color iii. They turn ultraviolet light into green light iv. They refract white light f. When you combine all the colors of the spectrum, what do we see? i. white ii. black iii. red iv. nothing g. Thermal energy that can move from one substance to another i. refraction ii. insulator iii. heat iv. radiation h. The total kinetic and potential energy of the particles in a substance i. heat ii. reflection iii. temperature iv. thermal energy i. The bouncing of light rays off the surface of a material i. refraction ii. convection iii. conduction iv. reflection j. The transfer of thermal energy by the movement of the particles of a liquid or a gas i. reflection ii. conduction iii. convection iv. conductors k. The change in direction of light when it moves from one material to another i. convection ii. refraction iii. reflection iv. radiation
  6. 6. l. The second law of thermodynamics, i. Is unrelated to the concept of entropy. ii. Implies that there is no upper limit ideally to the efficiency of a heat engine and theoretically all the heat from a source could be transformed into mechanical energy. iii. Is not obeyed by biological systems, only physical systems. iv. Means that the entropy of an isolated system cannot decrease. m. A science article refers to a temperature of 300.0 K. What is the equivalent Fahrenheit temperature? i. 17° F ii. 80.6° F iii. 549° F iv. 572° F n. The average human body temperature is 98.6° F. What is the equivalent temperature on the Celsius scale? i. 22.8° Celsius ii. 37° Celsius iii. 51.2° Celsius iv. 209.48° Celsius o. Compared to cooler air, warm air can i. Hold more water vapor. ii. Less water vapor. iii. Be the same amount of water vapor. iv. Depend on the exact temperature at the time. p. The transfer of energy from molecule to molecule is called: i. Convection. ii. Radiation. iii. Conduction. iv. Equilibrium. q. Anytime a temperature difference occurs, you can expect i. Cold to move to where it is warmer. ii. Energy movement from higher temperature regions. iii. No energy movements unless it is warm enough, at least above the freezing temperature. iv. Energy movement flowing slowly from cold to warmer regions. r. A large and a small container of water with the same temperature have i. The same total amounts of internal energy. ii. The same amounts of internal and external energy. iii. Different amounts of heat. iv. The same amounts of all forms of energy. s. How much energy (in calories and in Joules) will it take to raise the temperature of 75.0 g of water from 20.0 to 55.0 °C? (Specific Heat = 1 cal / ( g °C ) and 4.184 J / ( g °C )) i. 2630 cal and 630. J ii. 2630 cal and 1.1 x 10 4 J iii. 1.1 x 10 4 cal and 2630 J
  7. 7. iv. 630. cal and 2630 J v. None of these are correct. t. 350 J are released as ice (Specific Heat = 2.1 J / (g °C)) cools from - 5.0 °C to - 32 °C. What is the mass of ice? i. 0.16 g ii. 6.2 g iii. 4.5 x 10 3 g iv. 2.0 x 10 4 g v. None of these are correct. u. A 63.0 g piece of aluminum (Specific Heat = 0.215 cal / (g °C)) at 25 °C is warmed by the addition of 325 calories of energy. Find the final temperature of the aluminum. i. 49.0 °C ii. 240. °C iii. 26.1 °C iv. 1.11 °C v. None of these are correct. v. What is inside your stomach that helps break food down into a thick liquid paste? i. Water. ii. Acids and enzymes. iii. Villi. w. A renal corpuscle includes the i. Glomerulus and Bowman's capsule ii. Glomerulus and renal tubule iii. Bowman's capsule and renal tubule iv. Renal tubule and collecting tubule x. Kidney stones are least likely to be composed of i. Uric acid ii. Calcium oxalate iii. Cholesterol iv. Magnesium phosphate y. Which of these types of waves does not fit into the group? i. Gamma ii. Sound iii. Visible Light iv. Radio v. Ultraviolet
  8. 8. III. CRITICAL THINKING. IN THE FOLLOWING SECTION ANALYZE AND ANSWER THE FOLLOWING QUESTIONS. (15 Points Total) 5. Rank these four objects in increasing order of kinetic energy, beginning with the smallest. (2 Points Total) Object A Object B Object C Object D m = 5.0 kg v = 4.0 m/s h = 2.0 m m = 10.0 kg v = 2.0 m/s h = 3.00 m m = 1.0 kg v = 5.0 m/s h = 5.0 m m = 5.0 kg v = 2.0 m/s h = 4.0 m 6. Rank these four objects in increasing order of potential energy, beginning with the smallest.(2 Points Total) Object A Object B Object C Object D m = 5.0 kg v = 4.0 m/s h = 2.0 m m = 10.0 kg v = 2.0 m/s h = 3.00 m m = 1.0 kg v = 5.0 m/s h = 5.0 m m = 5.0 kg v = 2.0 m/s h = 4.0 m
  9. 9. 7. Solve the following problems by finding the correct solution. (2 Points Each, 6 Points Total) a. A 0.750 kg ball is dropped from rest at a point 0.80 m above the floor. There is no air resistance, and the floor is at zero potential energy. Find the potential and the mechanical energy at the highest point. b. What is the gravitational potential energy of a cat that weights 67N standing on a table that is 120 cm above the ground? c. Convert the following temperatures to Fahrenheit, Celcius and Kelvin degrees. CELCIUS FAHRENHEIT KELVIN 29°C 56.7°F 423 -275 7. Draw and list the electromagnetic spectrum of light. (1 Point Total)
  10. 10. 8. Describe the steps of the breathing process. (2 Points Total) 9. Describe the function of the following organs or tissues. (2 Points Total) ORGAN/TISSUE FUNCTION Small Intestine Gallbladder Pleura Henle´s Loop TABLE OF FORMULAS: Heat (J) = specific heat (J/kg.°C) x mass (kg) x change in temperature (°C) K= °C + 273 °F = 9/5 (°C +32) °C = 5/9(°F-32) EK = 1/2 mv2 EP = w x h = m x g x h Gravity = 10 m/s2