I. Read the questions carefully and write the letter of the correct answer on the blank. 1. C 2. D 3. C 4. A 5. C 6. B 7. B 8. D 9. C 10. A
II. Write True if the statement is correct and False if not. Write your answer on the spaace provided before the number. 11. True 12. False 13. False 14. True 15. True
Terminologies:
I. What is opaque? - Not able to be seen through; not transparent.
What is Translucent? - Allowing light, but not detailed shapes, to pass through; semitransparent.
What is Transparent? - Allowing light to pass through so that objects behind can be distinctly seen.
What is Refraction? - Reflection involves a change in direction of waves when they bounce off a barrier.
What is Reflection? - The return of light or sound waves from a surface.
What is Shadow? - A shadow is light blocked by an object
II.
- Decibels or dB is the unit of measurement of sound. - Loudness will decrease as we move away from the source of sound. - A whisper is low in intensity. - As we move closer to the source, the sound becomes louder. - The pitch is defined as a measure of how high or low the sound is.
Answers & Comments
Answer:
test 1.
1. d
2. a
3. b
4. a
5. b
6. b
7. a
8. d
9. c
10. c
test 2.
1. T
2. F
3. T
4. T
5. T
Answer:
I. Read the questions carefully and write the letter of the correct answer on the blank.
1. C
2. D
3. C
4. A
5. C
6. B
7. B
8. D
9. C
10. A
II. Write True if the statement is correct and False if not. Write your answer on the spaace provided before the number.
11. True
12. False
13. False
14. True
15. True
Terminologies:
I.
What is opaque?
- Not able to be seen through; not transparent.
What is Translucent?
- Allowing light, but not detailed shapes, to pass through; semitransparent.
What is Transparent?
- Allowing light to pass through so that objects behind can be distinctly seen.
What is Refraction?
- Reflection involves a change in direction of waves when they bounce off a barrier.
What is Reflection?
- The return of light or sound waves from a surface.
What is Shadow?
- A shadow is light blocked by an object
II.
- Decibels or dB is the unit of measurement of sound.
- Loudness will decrease as we move away from the source of sound.
- A whisper is low in intensity.
- As we move closer to the source, the sound becomes louder.
- The pitch is defined as a measure of how high or low the sound is.