# Bedford

Districts Schools

# 2023 Item by Item Results for GRADE HS INTRODUCTORY PHYSICS

## Number of Students Included: 217

 Bedford - GRADE HS INTRODUCTORY PHYSICS ITEM INFORMATION PERCENT OF DISTRICT'S POSSIBLE POINTS ITEM TYPE REPORTING CATEGORY STANDARD ITEM DESC POSSIBLE POINTS BEDFORD STATE DISTRICT-STATE DIFFERENCE 1 SR MF HS.PHY.2.2 Determine which object has the greatest momentum. 1 95% 87% 8 2 SR MF HS.PHY.2.4 Compare the forces between pairs of charged particles. 1 83% 67% 16 3 SR MF HS.PHY.2.5 Explain why a compass needle moves when it is placed near a current-carrying wire. 1 81% 63% 18 4 SR EN HS.PHY.3.1 Interpret a model to identify where a car has the most gravitational potential energy and where the car has the most kinetic energy. 1 87% 62% 25 5 SR MF HS.PHY.2.10 Determine that an object is accelerating upward based on its free-body force diagram. 1 83% 64% 19 6 SR EN HS.PHY.3.5 Describe how a test charge will move when placed next to a charge that is fixed in position, and describe how the distance and forces between the two charges will change. 2 82% 69% 13 7 SR MF HS.PHY.2.9 Determine the values of resistors in a series circuit. 1 74% 60% 14 8 SR MF HS.PHY.2.10 Interpret a velocity vs. time graph to determine when a vehicle has the greatest acceleration. 1 62% 60% 2 9 SR MF HS.PHY.2.10 Describe the velocity and forces acting on an object based on a position vs. time graph. 1 82% 67% 15 10 SR EN HS.PHY.3.1 Determine over which time interval the most work was done on an object. 1 76% 70% 6 11 SR EN HS.PHY.3.2 Interpret a temperature vs. thermal energy added graph to determine when a substance changed from a liquid to a gas. 1 63% 51% 12 12 SR WA HS.PHY.4.1 Recognize that both mechanical and electromagnetic waves carry energy. 1 65% 51% 14 13 SR WA HS.PHY.4.1 Recognize that the amount of time it takes a wave to complete one cycle can be found from the frequency of the wave. 1 60% 46% 14 14 SR WA HS.PHY.4.1 Calculate the wavelength of the light emitted from a laser. 1 56% 36% 20 15 SR WA HS.PHY.4.3 Describe how waves diffract as they pass through an opening and then constructively interfere. 2 55% 38% 17 16 CR WA HS.PHY.4.1 Calculate the velocity of a wave, interpret a model to compare the wavelengths of the wave in different situations, and explain how the velocity of the wave is changed as a result of the wavelength changing. 3 75% 60% 15 17 SR EN HS.PHY.1.8 Interpret models of radioactive decay to determine which models represent alpha decay, beta decay, and gamma decay. 1 54% 46% 8 18 SR MF HS.PHY.2.10 Calculate the velocity of a rocket after a certain time period when given the initial velocity and constant acceleration. 1 72% 61% 11 19 SR MF HS.PHY.2.1 Determine the speed vs. time graph that best matches a given situation. 1 83% 67% 16 20 CR MF HS.PHY.2.4 Identify the attractive force between objects, compare the magnitude of the force between different pairs of objects, and determine how the force would change if the mass of one object were reduced. 4 53% 42% 11 21 CR EN HS.PHY.3.4 Determine the direction of heat flow between marbles and water in an investigation, calculate the amount of thermal energy transferred and the specific heat of the marbles, and describe whether changing the number of marbles would affect their specific heat. 4 54% 34% 20 22 SR MF HS.PHY.2.3 Determine two variables that must be kept constant while testing how well a device minimizes the collision force on an object. 1 91% 84% 7 23 SR MF HS.PHY.2.1 Describe the velocity of an object based on its free-body force diagram and explain how increasing the applied force should be represented in the object's free-body force diagram. 1 81% 66% 15 24 SR EN HS.PHY.3.2 Calculate the change in gravitational potential energy of a system of two objects. 1 80% 61% 19 25 SR WA HS.PHY.4.5 Recognize that two wave pulses interfere when they overlap and determine the amplitude of the resulting wave pulse. 2 67% 59% 8 26 SR MF HS.PHY.2.9 Calculate the current through a resistor. 1 92% 73% 19 27 SR EN HS.PHY.3.2 Calculate the acceleration of an object due to gravity on Mars. 1 80% 62% 18 28 SR MF HS.PHY.2.4 Identify a difference between the forces described by Newton's law of gravitation and Coulomb's law. 1 75% 66% 9 29 SR MF HS.PHY.2.2 Analyze a collision using momentum conservation and model the velocity of one of the objects before and after the collision. 1 63% 53% 10 30 SR WA HS.PHY.4.3 Determine two pieces of evidence from a model that support the claim that light acts like a wave. 1 75% 58% 17 31 SR EN HS.PHY.3.5 Describe how to increase the potential energy between two magnets. 1 60% 42% 18 32 SR MF HS.PHY.2.3 Compare the change in momentum and the change in velocity of two objects. 1 60% 54% 6 33 SR MF HS.PHY.2.9 Interpret circuit diagrams to determine the circuit with the brightest light bulb. 1 92% 71% 21 34 SR EN HS.PHY.3.1 Calculate the amount of work gravity did on an object. 1 57% 41% 16 35 SR EN HS.PHY.3.3 Describe how a setup can be changed to reduce how far an object rolls off a table. 1 75% 71% 4 36 SR EN HS.PHY.3.3 Describe how energy changes in a system and determine the efficiency of part of the system. 2 67% 57% 10 37 CR MF HS.PHY.2.1 Analyze a model of two objects that are at rest and connected by a pulley to compare the net force on and mass of each object, and describe how mass being added to an object would affect the direction of the net force on the object. 3 43% 34% 9 38 SR MF HS.PHY.2.2 Compare the momentum of vehicles with different masses and velocities. 1 81% 64% 17 39 SR WA HS.PHY.4.1 Describe a difference between an electromagnetic wave and a mechanical wave. 1 73% 66% 7 40 SR EN HS.PHY.3.4 Determine which measurements a student must make to calculate the specific heat of a metal sample. 1 72% 53% 19 41 SR MF HS.PHY.2.10 Determine which free-body force diagram represents the forces on an object and calculate the acceleration of the object. 2 86% 69% 17 42 CR MF HS.PHY.2.5 Explain why a light bulb turns on in a given setup, describe two changes to the setup that would increase the brightness of the bulb, and describe how the relationship between electricity and motion in the setup is different than in an electric motor. 4 48% 36% 12