1) 1. Which of the following quantities moves the charges in a circuit? a) CURRENT b) VOLTAGE 2) When you shout and the sound hits a barrier, it turns back. This is called ____________ a) reflection of sound b) refraction of sound 3) Current is directly proportional to voltage and inversely proportional to resistance a) TRUE b) FALSE 4) Which of the following activities shows safety in using electricity?  a) Do not touch electric outlets or insert anything into it. b) Ask firemen to inspect electric connections c) Cover exposed wires d) all of these are good practices 5) Between red and green, which has a longest wavelength based on the hierarchy of colors? a) red b) green 6) 1. Which of the following type of force pulls the object towards the center of the earth a) Gravitational  b) Normal Force 7) Do sounds travel in outer space? a) Yes, because there are molecules to vibrate b) No , because it is a vacuum place and there is no particles or molecules to vibrate 8) Which among the colors have the least energy based on its arrangement? a) Red b) Orange c) Yellow d) Green 9) In cooler regions, sound travels ___________ while it travel __________________in hot regions. a) slower, faster b) faster, slower 10) Which of the following affects the flow of charges in a circuit? a) Current b) Resistance 11) What happens to the temperature of water as it changes from ice to water? a) Temperature decreases b) Temperature increases 12) Which of the following activities is NOT an example of doing work? a) Pushing a cart b) Raising a ball c) A girl carrying a bag on her shoulder walking down the street d) none of these is correct 13) Which of the following statement best describes the appearance of rainbow a) The raindrops act as a prism that they disperse different colors when the sun appears b) The  white clouds serve as the prism. 14) As the water inside the kettle begins to boil, warm water rises and colder water sinks and warm. This method of heat transfer is called a) radiation b) convection 15) Why do wire heats up when there is too much current? a) electron flows collide with one another b) The kinetic energy of molecules increases c) There is a higher current passing through the wire d) all of these are correct 16) Arrange the following materials in an increasing order in terms of the velocity of the sound a) water, iron, air b) iron, water, air c) air, water , iron 17) What will happen when two light bulbs are connected inPARALLEL? a) The voltage provided is evenly distributed. b) If one light burns out, the other bbll will not light too.. c) both are correct 18) Which is true when two bulbs are connected in SERIES? a) The current of the two bulbs are the same. b) Together, they have low resistance 19) Your mother bought an extension wire with thin diameter? Which of the following situations might happen in the wire. a) The wire might heat up when too much load is connected to it. b) The wire will cause short circuit c) These are all possible to happen 20) Which has a higher temperature? a) a cup of boiling water b) a drum of boiling water 21) Which of these has a high specific heat capacity? a) water b) oil 22) In what form does light travel? a) electrmagnetic wave b) current 23) How is frequency related to energy of colors in light? a) The lower the frequency, the higher the energy b) The higher the frequency, the higher the energy 24) In which set up will the bulb glow brighter? a) Circuit with 1 battery b) Circuit with two batteries c) Circuit with 3 batteries d) Circuit with 4 batteries 25) Which of the following materials will help you make a beautiful musical instrument? a) wood b) steel c) fabric 26) In which material will the sound travel faster? a) close classroom b) under water c) on a piece of wood 27) Which of the following best explains that work is done? a) When you push an object and it does not move b) When you push the object and it moves towards the direction you are pushing 28) This property of light is called the bending of light because of the difference in densities of the medium when light passes through it? a) Dispersion b) Reflection c) Refraction 29) When an object receives an unbalanced force, what will happen to an object. a) The object will move. b) The object will change its direction c) These may both happen 30) Which properties of color explains the appearance of colors a) Dispersion b) Reflection 31) Does the sound need medium to travel? a) Yes b) No 32) Why can light travel in space. a) Because light does not need a medium to propagate b) Because it travels in different direction 33) How long will an object remains at rest according to Newton's First Law of Motion? a) For 5 days b) An over night c) Until an external force hits the object 34) Which of the following will happen if a circuit have little or no resistance to flow of the charges? a) Overload b) short circuit 35) Why do open field concerts held at nigh time than in daytime? a) Sounds refracted from the stage to the audience b) Sounds reflected from the stage to the audience 36) Which of the following situation explains why a passenger is thrown forward when the bus suddenly stops? a) Law of Acceleration b) Law of Inertia c) Law of Interaction 37) Why is lightning first seen before you hear the thunderclap? a) Because sound travels faster than light. b) Because light travels faster than sound 38) Which of the following DOES NOT apply the concept of reflection of sound? a) Ultrasound in medical field b) Echo sounding to map the sea floor c) Concert in open field d) Submarine positioning 39) It measures the number of electric charges that passing through a conducting wire at a given time a) circuit b) current c) voltage d) resistance 40) This connection has only one path for the current a) parallel circuit b) series circuit 41) What happens to the acceleration of an object when the force applied to it is doubled, assuiming the mass remains constant a) It stays the same b) It halves c) it  doubles d) it quadruples 42) If the mass of an object is increased while the same force applied, what happens to the objects's acceleration? a) increases b) decreases c) remains the same d) becomes zero 43) Which of the following best describes the relationship between force, mass and acceleration? a) Force= mass x acceleration b) Force= mass - acceleration c) Force= mass divides acceleration d) Force= mass + acceleration 44) If a car with a mass of 1000 kg is subjected to a 2000N force, what is the car's acceleration? a) 1 m/s2 b) 2 m/s2 c) 4 m/s2 d) 8 m/s2 45) In a given experiment, you apply a force of 50 N to an object, and it accelerates at 5 m/s2. What is the mass of the object? a) 5 kg b) 10 kg c) 15 kg d) 25 kg 46) A truck and a car are pushed with the same force, but the truck moves slower than the car. What can be inferred from this scenario? a) Both have the same mass b) The car has more mass than the car. c) The truck has more mass than the car d) The force applied to the truck is greater 47) If an object is experiencing zero net force, what can be said about its motion? a) It will come to rest b) It will maintain its current motion c) It will accelerate in the direction of the force d) It will move in the opposite direction 48) What does Newton's Third Law of Motion state? a) Obejcts at rest stays at rest b) An objects in motion stays in motion c) Force equals mass times acceleartion d) For every action, there is an equal and opposite reaction 49) When you push on wall, what force does the wall exert on you? a) No force b) A smaller force in the same direction c) A force equal in size and opposite in direction 50) A swimmer pushes the water backward with their hands. What is the reaction force? a) The swimmer slows down. b) The swimmer sinks due to gravity. c) The water pushes the swimmer forwrd. d) The water pushes the swimmer backward 51) Which of the following factors directly affects an object's potential energy? a) speed and direction b) mass and height c) volume and temperature d) friction and velocity 52) What factors does not influence the amount of potential energy an object has? a) The object's mass. b) The object's height c) The object's velocity d) The acceleration due to gravity. 53) If a boulder is placed on a hill, which of the following acitons will increase in potential energy? a) Moving the boulder to a hgher point on the hill. b) Lowering the height of the hill c) Rolling boulder down the hill d) decreasing its mass 54) When a roller coaster is at top of a hill just like what is hown in the picture . a) High kinetic energy b) High Potential energy c) Low kinetic energy d) Low potential

PHYSICS REVIEW

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