Page 108 - ScienceStd4
P. 108
Revision exercise
Section A: Choose the correct answer.
1. When an object is struck, it produces _____.
FOR ONLINE READING ONLY
(a) stringed instrument
(b) sound
(c) drum
(d) bell
2. When sound hits a wall and returns, it is called _____.
(a) transmission
(b) light
(c) echo
(d) procession
3. The primary use one of these words source of light energy
is _____.
(a) candle
(b) moon
(c) sun
(d) fire
4. Light travels in a _____.
(a) line that narrows
(b) straight line
(c) curved line
(d) angled line
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SCIENCE AND TECHNOLOGY STD 4.indd 101
SCIENCE AND TECHNOLOGY STD 4.indd 101 14/01/2025 18:38
