3rd Quarter Examination in Science 7 Name: ________________________________________________ Score: _______________ Test I. MULTIPLE CHOICE: Choose only the letter of your correct answer. Write it on the blanks provided before each number. 1. It is the change of position with change in time? A. Displacement B. Motion C. Velocity D. Acceleration 2. Which refers to the length of the entire path travelled by an object? A. Displacement B. Distance C. Motion D. Time 3. Which refers to the shortest distance between to object’s two positions? A. Displacement B. Distance C. Motion D. Time 4. It is the shortest distance between the initial and final position of any object. A. Displacement B. Motion C. Velocity D. Acceleration 5. The transfer of heat occurs between objects by direct contact? A. Convection B. Radiation C. Conduction D. None of the above 6. It is defined as the displacement per unit time. A. Displacement B. Motion C. Velocity D. Acceleration 7. It is defined as the rate of change of velocity. A. Displacement B. Motion C. Velocity D. Acceleration 8. Refers to how much ground an object has covered during its motion. A. Displacement B. Distance C. Velocity D. Acceleration 9. The heat transfer takes within the fluid? A. Convection B. Radiation C. Conduction D. None of the above 10. These are motion graphs that show a change in an object’s location over time. A. distance-time graph B. Position-time graphs C. Speed-Time Graphs D. Displacement-Time Graphs 11. Which of the following instrument is best used for measuring the time of moving object? A. Stop Watch B. Alarm clock C. Wrist watch D. Digital clock 12. If an object is in motion, it changes position relative to its _____. A. Time B. Angle C. Speed D. Reference Point 13. Waves spread in _______ direction from the point where you drop an object in the water? A. All B. Left. C. Right D. None of the Direction 14. The following units can be used to mathematically express speed, EXCEPT A. m B. m/s C. km/hr D. miles/hr 15. Which is TRUE about displacement? A. How fast an object is moving B. Change in position in a given time C. Length of the entire path that an object travelled D. Shortest distance between the object’s two positions 16. The highest point of a wave is called? A. Crest B. Trough C. Amplitude D. Wavelength 17. What is the periodic disturbance that moves away from a source and carries energy with it. A. Waves B. Crest C. Amplitude D. Wavelength 18. Which ONE of the following types of waves is NOT an example of a mechanical wave? A Sound waves B. Light waves C. Water waves D. Seismic waves 19. These graphs are useful and effective tools in visually presenting the motion of objects. A. Area graphs B. Motion graphs C. Bar graphs D. Pie graphs 20. What does the vertical axis represent on a position-time graph? A. Speed of the object B. Position of the object C. Velocity of the object D. Total time travelled by the object 21. When an object increases in speed, it is said to be ________________. A. accelerating B. negatively accelerating C. speeding up then slowing down D. slowing down then speeding up 22. When an object is at constant speed, it is? A. Zero speed B. Decelerating C. Accelerating D. Moving at the same speed all throughout the travel. 23. Which is TRUE about displacement? A. How fast an object is moving. B. Change in position in a given time. C. Length of the entire path that an object travelled. D. Shortest distance between the object’s two positions 24. What is the electromagnetic radiation that can help us able to see things? A. Radio wave B. Visible light C. Ultra violet D. Gamma rays 25. This type of charging process can occur by rubbing two different materials. A. Conduction B. Induction C. Friction D. Convection 26. Which of the following illustrates acceleration? A. Constant velocity B. Changing direction C. The direction does not change D. The speed and direction remains the same 27. This type of charging process involves the direct physical contact of charge object to a neutral object. A. Conduction B. Induction C. Friction D. Convection 28. This type of charging process where an object can be charged without actual contact with other charged object. A. Conduction B. Induction C. Friction D. Convection 29. The Hertz (Hz) is the unit of measure for which wave property? A. Crest B. Amplitude C. Wavelength D. Frequency 30. What does the slope of a distance vs. time graph represent? A. Acceleration B. Distance C. Displacement D. Speed 31. If the frequency is lower, the wavelength is? A. Longer B. Shorter C. Higher D. Lower 32. What property of this wave is represented by the letter “B”? A. Amplitude B. Crest C. trough D. Wavelength 33. The following quantities can tell us both the magnitude and direction of an object, EXCEPT. A. Acceleration B. Displacement C. Speed D. Velocity 34. The number of waves generated per second by a source is called? A. Crest B. Amplitude C. Wavelength D. Frequency 35. Which of the following correctly describes a wave? A. It can set an object into motion B. It moves through materials only. C. It transmits weaker force D. It is static 36. An object is considered in motion with respect to its point of reference when ____ changes. A. Distance B. Direction C. Displacement D. Position 37. What is the equation for speed? 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 A. 𝑆𝑝𝑒𝑒𝑑 = B. 𝑆𝑝𝑒𝑒𝑑 = 𝑆𝑝𝑒𝑒𝑑 C. Speed = (Distance)(Time) 𝑇𝑖𝑚𝑒 D. None of the above 38. Which of the following graph is showing that the speed of an object is constant? A. B. C. D. 39. Which statement describes the energy of waves? A. Waves carry energy. B. Waves transform energy. C. Waves transfer energy? D. Waves transfer object not energy 40. If we combine all the colors in Electromagnetic spectrum the result will be? A. Black B. White C. Grey D. Pink 41. How Electromagnetic waves carry energy? A. Energy is transferred through successive compressions and rarefaction of the medium B. Such as light, propagate through the transfer of energy via changing electric and magnetic field C. Energy is transferred through vibration of air particles or particles of solid which the sound travel D. All of the above 42. An example of an unpleasant sound? A. Laughing B. Piano C. Rocket launch D. Ocean sound 43. What is heat transfer? A. Flow of thermal energy from low-temperature reservoir to high-temperature reservoir B. Flow of energy in the form of heat from high-temperature to low-temperature C. Flow of thermal energy irrespective of reservoir temperature D. None of the above 44. Heat is the transfer of energy due to? A. Temperature similarities B. Temperature equality C. Temperature differences D. None of the above 45. Burning a marshmallow in a campfire by accidentally touching the marshmallow to the flame is example of? A. Convection B. Radiation C. Conduction D. None of the above 46. When water waves travel, the water particles ___________? A. move with the wave and energy is not propagated B. vibrate in the direction of wave motion and only energy is propagated C. move with the wave and energy is propagated D. vibrate perpendicular to the wave motion, and only energy is propagated 47. For which of the following objects would the average speed be 20 miles per hour? A. Car that travels 40 miles due west in two hours, and 60 miles due north in 3 hours B. Train that travels 20 miles in one hour and 40 miles in the next hour, all due east C. Person on a Segway that travels 15 miles in half an hour D. Car traveling 50 miles in two hours 48. Which of the following statements about longitudinal waves is FALSE? A. Sound waves are an example of a longitudinal wave. B. A slinky spring can be used to demonstrate how longitudinal waves travel. C. Longitudinal waves have areas of compression and rarefaction. D. All electromagnetic waves are longitudinal waves. 49. If you put a metal spoon and a wooden spoon into a pot of boiling water, one will become too hot to touch. Why? A. Wood isn’t as strong as metals. B. Metals conduct heat better than wood. C. Wood conducts heat better than metals. D. Metals pull in heat because heat is attracted to metals. Wood isn’t as strong as metals. 50. How can we identify if a material is a good conductor of heat and electricity? A. If heat and electricity cannot pass through easily. B. If heat and electricity can pass through easily C. If the material is made up of wood D. If a material is made up of plastic Prepared: John Paul F. Ducducan BSED-Science/Teacher-Intern Checked: Mercedes T. Consus MT-1/ Science Cooperating Teacher Noted: Wilma C. Bacayo Science Department Head Approved: Melinda Gad-Tabucao School Principal I Answer Key 1. B 2. B 3. A 4. A 5. C 6. C 7. D 8. B 9. A 10.B 11.A 12.D 13.A 14.A 15.D 16.A 17.A 18.B 19.B 20.D 21.D 22.D 23.D 24.B 25.C 26.C 27.A 28.B 29.D 30.A 31.A 32.A 33.D 34.D 35.A 36.C 37.B 38.C 39.A 40.B 41.B 42.C 43.B 44.C 45.C 46.D 47.B 48.D 49.B 50.B