Question 1
以下哪一项是**人造光源** (artificial light source)?
- A太阳
- B萤火虫
- C手电筒
- D月亮
Answer: C. 手电筒
手电筒是人类制造的发光物体,属于人造光源。太阳和萤火虫是天然光源;月亮本身不发光,只是反射太阳的光,所以不是光源。
Standard 4 · 科学 (Science)
四年级科学 (Science) · 光的特性
Properties of Light is part of the Standard 4 Science syllabus. Practice the MCQs here to sharpen your exam technique — each question comes with a worked explanation.
Free sample questions
Question 1
Answer: C. 手电筒
Question 2
Answer: C. 光沿直线传播
Question 3
Answer: B. 没有光线进入我们的眼睛
Question 4
Answer: B. 光的折射
Question 5
Answer: B. 平面镜
Other 科学 (Science) chapters
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