4. Which of the following statement is TRUE about sound?
Sound waves travel best in open spaces than in solids.
II. Sounds cannot be created in an empty space because
nothing can transmit the
sound.
A. I and II are TRUE
B. I and II are FALSE.
C. Tis FALSE, IT IS TRUE.
D. ris TRUE, II is FALSE,
5. Which of the following illustrates the usefulness of sound?
A. Sound can lose the sense of hearing.
B. Sound can cause damage to vehicles.
C. Sound delays the operation in a factory.
D. Sound aids us in communicating with other people.
6. Which of the following activities produces NO sound?
A. sitting on a chair
C. plucking the guitar
B. beating the drum
D. blowing the whistle
7. During the process of photosynthesis, plants transform the Sun's light energy into
another form of energy. What energy is this?
A. heat
B. solar
C. chemical
D. electrical

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