Tiểu học Đô thị Sài Đồng | Song ngữ Khoa 4 - Bài 6 - Lesson 2- HOW DOES LIGHT TRAVEL

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<b>Light</b>

<b>Unit 6. Lesson 2:</b>
<b>(Duration 35 mins)</b>

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<b>Revision</b>

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<b>Warm up</b>

<b>Fill in the blanks</b>

<b>1. The Sun and torches are l _ _ _ _ s_ _ _ _ _ _ .</b>

<b>2. A light source can p _ _ _ _ _ _ light.</b>

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<b>How light travels?</b>

<b>Experiment: </b>

<b>1. Preparation: </b>

<b>- 1 laser led</b>

<b>- Some pieces of paper with a hole in the middle</b>

<b>2. Result:</b>

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<b>Light travels in straight line.</b>

<b>Light cannot travel in bended path.</b>

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<b>When light cannot go past an </b>
<b>object, it forms a shadow.</b>

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<b>Opaque objects block light and </b>
<b>form shadows.</b>

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<b>Unit 6-Lesson 2: How does light travel?</b>
1. Travel: di chuyển

2. Straight line: đường thẳng
3. Opaque: vật chắn sáng

4. Bended line: đường cong
5. Shadow: bóng

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Let’s make some shadows of animals

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<b>Light travels in straight line.</b>

<b>Summary</b>

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