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I.ENCIRCLE THE LETTER WITH THE CORRECT ANSWER 1. What is the term for the energy possessed by an object in motion? a. potential energy b. kinetic energy c. hydroelectric energy d. mechanical energy
2. What energy is described as an energy in transit? a. electricity b. Heat c. sound d. light
3.Why do pencil looks broken inside the glass of water? a. Due to reflection of light b. due to scattering of light c. due todispersion of light d. due to refraction of light
4. what is the term for the turning back of light into the same medium after striking a surface? a. refraction b. reflection c. dispersion d. scattering
5. how are you going to convert electrical energy in a simple way? a. turn off the light when not in use b. make 4R's a habit (reuse,reduce,recycle.refuse) c. use glass in brushing your teeth d. all of the above
6. how will you keep yourself safe from danger of electrocaution? a. be careful in unplugging the electric wires b. don't hold electric wires when hands are wet c. make sure to turn off electrical appliances properly d. all of the above
7. which from the following statement is the most possible way you can prove that there are different colors in white light ? a. face in front of a mirror and let light pass through it b. let the rain fall and wait for the rainbow c. you was a prism and allow light to pass through the object d. all of the above
8. what is the potential energy of an object with a mass of 200kg elevated at 2m? a. 392 n b. 333 n c. 294 n d. 40 n
9. what is the longitudinal mechanical wave that travels through a medium? a. light b.electricity c.sound d. Rainbow
10. what is the device used to measure voltage? a. wattmeter b.amperemeter c. voltage meter d. volt meter
11. where will sound travel the fastest? a.solid b.liquid c.air d sound will travel at the same rate on any object
12. what newton's law state that in every action there is always an opposite and equal reaction? a. law of inertia b. law of acceleration c. law of interaction d. law of gravity
13. what is the relationship between the wavelength and frequency of the colors of light? a. directly related b. inversely related c. equal d. all of the above
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