C green
19. Which of the following are arranged according to increasing wavelength?
A blue, red, yellow, green
C. blue, green, orange, red
B. red, violet, green, blue
D. orange, yellow, green, violet
20. When violet light is compared with green light,
A both have the same frequency C. both travel at the same speed
B. both have the same wavelength D.green light travels faster than violet
21. What is the sum of different colors in the rainbow?
A white
B. yellow
D. black
22. Temperature is proportional to the average kinetic energy of partucles in an object.
Thus, an increase in temperature results in an)
A. increase in mass
C. increase in average kinetic energy
B. decrease in mass
D. decrease in average kinetic energy
23. Which kind of energy transfer can occur in a vacuum?
A convection
C. expansion
B.conduction
D.radiation
24. Campfires transfer energy as heat to their surroundings by methods of
A. convection and conduction
C. conduction and radiation
B. convection and radiation
D. convection only
25. Which of the following is NOT an example of charging by friction?
A Walking across a shaggy carpet C. Brushing dry hair with a plastic comb
B.Sliding over a plastic-covered car seat D. Scraping a metal spoon on a metal bowl
26. The electric force between two objects depends on all of the following, EXCEPT:
A. The distance between objects
B. The electrical charge of the first object.
C. The electrical charge of the second object
D. How the objects became electrically neutral.
27. An electrically neutral object has
A no charge at all
C. been stripped of all electrons
B. been stripped of all protons
D. equal negative and positive charges
28. Which of the following is NOT an example of charging process?
A. charging by friction
C. charging by traction
B. charging by induction
D. charging by conduction
29. Electrocuted person could NOT be held to keep yourself safe through
A his/her hair
C. the clothes he/she wears
B. Jewelries he/she wear
D. his/her rubber shoes
30. Inside an air-conditioned room, metallic objects generally feel cooler to touch than
wooden objects. Why is this so?
A Heat tends to flow from metal to wood
ung maayos po ha
B. Metal heats up and cools down faster than wood.
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