Revision booklet questions for semester 1: Teacher: Mr. Olaniyan The following document will have some Revision notes, as key reminders, and practice questions similar to the exam, it is recommended you revise from your class notes, Textbooks, previous quizzes and worksheets as well as this revision pack to help you prepare for the midterm exam in January 2021. Semester 1 Revision Pack January 2021 Semester 1 revision pack January 2021 Forces and Motion Practice Questions: 1. The speed you read on a speedometer is ________________. 2. 3 m/s north is an example of a (n) _______________. 3. A car moves around a wide turn going 45 mi/hr the whole time. The car has a constant ____________. 4. If you ride your bicycle down a straight road for 500 m then turn around and ride back to your starting point, your distance is _______________ your displacement. 5. Motion is a change in __________________. 6. An indicator that orients you when describing motion is called the _______________. 7. How long will it take an object traveling at 25 m/s to reach a distance of 125 meters? 8. A high-speed train travels with an average speed of 227 km/hr. The train travels for 2 hrs. How far does the train travel? 9. A cross-country runner runs 10 km in 40 minutes. What is his average speed? 10. What does the slope of a distance vs. time graph tell you? 11. A horizontal (flat) line on a velocity vs. time graph shows ____________ acceleration. 12. Acceleration is rate of change of _________________. 13. The graph to the right represents the change in velocity of four cars over a period of 10 hours. Which line represents the car with the greatest acceleration? 14. The horses on a carousel or merry-go-round are accelerating because _____________________________________________________________. 15. Find the acceleration of a car that goes from 32 m/s to 96 m/s in 8.0 s. For Questions 16-20 use the speed vs. time graph to the right. 16. What variable is on the Y-axis on this graph? 17. In this velocity vs. time graph, the person at point A has ____________ acceleration. 18. In this velocity vs. time graph, the person at point B has ____________ acceleration. 19. In this velocity vs. time graph, the person at point C has ____________ acceleration. 20. At what point is the rate of change of velocity the greatest? Semester 1 revision pack January 2021 21. When a car traveling at 30 m/s hits the gas pedal, it speeds up to 65 m/s in 3.5 sec. What is the car’s acceleration during that time? 22. Which statement about the movement of an object with zero acceleration could be true? A. the object is speeding up B. the object is slowing down C. the object is moving at a constant speed D. the object is changing direction 23. A car travels a distance of 98 meters in 10 seconds. What is the average speed of the car? For Questions 24-27, use the graph to the right. 24. What does the slope of this graph tell you? 25. Which time interval has the greatest speed? 26. What is the instantaneous speed at 5 s? 27. What is the average speed of the bicyclist’s ride? 45 m/6 s = 7.5 m/s 28. A group of bike riders took a 4 hour trip. During the first 3 hours, they traveled a total of 50 km, but during the last hour they traveled only 10 km. What was the group’s average speed for 60 km/4 hr = 15 km/hr the entire trip? 29. A skateboarder is traveling 12 m/s down a hill. The skateboarder crashed and slid to a stop in 2.0 seconds. What was the rider’s acceleration? 30. What is true about a car with constant velocity? A. it has a positive acceleration C. it has a negative acceleration B. it has zero acceleration D. it has a changing direction Force: 31. A group of students is playing tug-of-war. The students on both sides of the rope are pulling with equal force so that the rope is not moving. This is an example of 32. What are the units for weight? 33. The upward force on an object falling through the air is ______________. 34. The relationship among mass, force, and acceleration is explained by ________________. 35. The size of the gravitational force between two objects depends on their _F=Gm1m2/r2_____Distance (and Mass)_________. 36. "To every action there is an equal and opposite reaction" describes which law? Semester 1 revision pack January 2021 37. Calculate the force on an object that has a mass of 10 kg and an acceleration of 4 m/s2. 38. A 500 N force is applied to a 25 m/s2 object. The mass of the object is _________. 39. What is the acceleration of the box in the picture to the right? 40. What is the weight of the box in the picture to the right? 41. Which two quantities are measured in the same units? A. velocity and acceleration C. mass and weight B. weight and force D. force and mass __E__ 42. An object will move at a constant velocity unless an unbalanced force acts upon it. a. Force b. Gravity __A__ 43. Push or pull one body exerts on another. c. Air resistance __C__ 44. A friction-like force that opposes the motion of objects that move through the air. d. Inertia __L__ 45. The highest velocity a falling object will reach. e. Newton’s 1st law f. Newton’s 2nd law g. Newton’s 3rd law ___D_ 46. Tendency of an object to resist changes in motion. ___B_ 47. The attraction any two objects have on one another. h. Law of Conservation of Momentum __K__ 48. The force of gravity on an object. i. Momentum ___F_ 49. A net force acting on an object causes the object to accelerate in the direction of the net force. j. Mass __J__ 50. Related to the amount of force needed to change an object’s motion. l. Terminal velocity 51. A runner goes around a 1 mile track. If they end up at their starting position: (2 marks) a. what is their distance traveled? b. what is their displacement? 52. A car goes from 5 m/s to 16 m/s in 2.5 s. What is the car’s acceleration? (4 marks) Semester 1 revision pack January 2021 k. Weight 53. A car travels west for 340 km in 3 hr. What is the car’s velocity? (4 marks) 54. A person walks 3 miles north, turns, and walks 2 miles east. Show the direction of the displacement with a labelled diagram. (3 marks) 55. A person walks 3 miles north, turns, and walks 2 miles east. Calculate the person’s distance traveled and their displacement. (4 marks) 55. What is the force being applied to an object with a mass of 14 kg and an acceleration of 7 m/s2? (4 marks) 56. Calculate the mass of an object that is accelerating 13 m/s2 with a force of 260 N. (4 marks) Electricity and Magnetism practice questions: 1. Protons have __Positive_________ electrical charge; electrons have _Negative__ electrical charge. 2. Opposite charges _Attract_________, and like charges __Repel________ . 3. Charging by ____________ is the rearrangement of electrons on a neutral object caused by a nearby charged object. 4. __Insulators_________ are materials that do not allow electric current to pass through easily. 5. ___________ is the accumulation of electrical charges on an object. 6. Current is usually the flow of __Electrons_____________ . 7. Charges flow from __Higher_________ voltage to ____Lower_______ voltage. 8. The tendency for a material to oppose the flow of electrons is called __Resistance______________. 9. Making wires thinner, longer, or hotter __Increase_________ the resistance. _Protons___ 10. Positively charged particles in an atom Series circuit _Electrons___ 11. Negatively charged particles in an atom Parallel circuit _Neutrons___ 12. Particles in the atom that have no charge Electroscope Voltmeter __Ferromagnetism__ 13. When non-magnetic materials become attracted to magnets Lightening _Electroscope___ 14. A device that detects electric charge on an object Grounding __Electromagnets__ 15. Temporary magnet made by placing a piece of iron inside a current carrying coil of wire. Current _Voltmeter___ 16. A device that measures the voltage difference in a circuit __Grounding__ 17. Providing a path that allows electric charges to travel directly into the Earth rather than traveling through a building. ___Series Circuit_ 18. Circuit that has only one pathway for current to travel through __Parallel Circuit__ 19. Circuit that has more than one pathway for current to travel through Electrons Protons Neutrons Ferromagnetism Electromagnets 20. Explain how lightning is created. Include which type of electric charge transfer it is. -Lightning is created by a negative discharge from the clouds that meet a positive discharge from the ground. -static electricity 21. Explain how a battery works. - Uses chemical reactions to create an electrical current to flow from a positive terminal to the negative terminal 22. List the four factors that affect resistance in a circuit. -type of material of resistor -length of resistor -thickness of resistor -the temperature of conductor 23. Draw a series circuit with two batteries, two resistors, a lamp, and a switch to turn the whole thing off. 24. Draw a parallel circuit with one battery, four lamps, switches to turn each lamp off AND a switch to turn off the entire circuit. 25. List two differences between series and parallel circuits AND list a real-world example of each. - If one component in a series cicuit cuts off then they all will cut off, if one component in a parallel circuit is cut off then the rest can stay on: (Ex. Kitchen appliances are connected by a parallel circuit) If one component is added to a series circuit, then the rest of the component will decrease its’ use of current (Ex. Adding a light bulb in series will make the other light bulbs dimmer) - Semester 1 revision pack January 2021 26. Find the total resistance and the current in the circuit. Total Resistance = 100 + 80 + 20 = 200 Ohms Voltage = 60 V I = V/R I = 60/200 = 3/10 = 0.3 Amps 27. Find the total resistance and the voltage if the circuit has a current of 40 amps flowing through it. 1/5 + 1/10 + 1/20 = 7/20 (Flip) = 20/7 Total Resistance = 20/7 Current = 40 A V = 20/7 x 40 = 800/7 = 114.29 V 28. Explain the two ways we discussed to keep a house from overheating. - Insulating the house Ensuring a Circuit Breaker/Fuse is installed 29. Describe what an electromagnet is and list the two ways to increase its strength. - electromagnet uses electrical current to produce magnetic field - Increase the current Increase the number of turns of the wire 30. Explain ferromagnetism. Make sure to include what is happening to the electrons in the atoms. You may draw a picture if that helps. -This is the Converting of a material into a permanent magnet -the spins of unpaired electrons end up aligning perfectly and creating a unidirectional magnetic field 31. The force or push that causes electric charges to move is called . Voltage/Electrical Potential 32. Electric charges always flow from higher electric potential areas to lower electric potential areas. Semester 1 revision pack January 2021 33. A material through which electrons do NOT flow easily is a(n) . - Insulator 34. Which things will increase the resistance of a wire? -length of wire increases -thinness of wire 35. What is the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms? I = 9 V/ 0.2 ohms = 45 A 36. Which two areas of physical science are closely related to the development of electric motors and generators? -Electricity -Magnetism 37. Which of the following will decrease the strength of the magnetic field around a wire in an electromagnet? -decreasing current in wire -removing the metal core material -decreasing the number of turns of wire 38. Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps? 39. This contains a piece of metal that melts if it gets too hot in order to open a circuit. A. conductor B. insulator C. fuse D. circuit breaker 40. What process is the method by which a neutral object obtains an electrical charge? - This is method is known as charging by induction 41. Which of the following statements about electric charge is true? A. Objects must be touching on another to exert electrical force. B. Electrical forces act at a distance. C. Air cannot conduct electricity; it is conducted only by solid materials. D. Opposite electric charges always repel one another. 42. Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used as an insulator? A. plastic plate B. copper wire C. silver spoon D. gold necklace 43. What is coulombs Law? -This relates the strength of force with the magnitude and distance between electrical charges 44. What are the similarities between coulombs law and the Universal Law of gravitation? -The force decreases as distance between objects increase -Force depends on the product of two magnitudes (inverse relationship between magnitude of force and distance) Semester 1 revision pack January 2021
