Grade 6 Science & Technology · Strand 3: Force and Energy · Light
Introduction to Light and How It Travels
A short Grade 6 Science & Technology lesson for the CBE curriculum, part of Force and Energy: Light. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.
1. Which of the following is a natural source of light?
- A. A paraffin lamp
- B. The Sun
- C. A solar lantern
- D. The Moon
2. In an experiment, three cards with pinholes at their centres are lined up and a torch is shone through them. What happens when the middle card is moved sideways so its hole is out of line?
- A. The light curves around the card to reach the eye
- B. The light becomes brighter
- C. The light is blocked because it cannot bend
- D. The light changes colour and reflects back
3. What is the scientific term for the fact that light travels in straight lines?
Type your answer in the lesson.
4. Why does a shadow form behind an opaque object such as a book held in front of a torch?
- A. The object makes the light bend inwards
- B. The object blocks the straight path of the light rays
- C. The object changes light into heat
- D. The object produces its own darkness
5. Wanjiru looks at a lit candle through a straight drinking straw and sees the flame. She then bends the straw and the flame disappears. What does this show?
- A. Light travels in straight lines
- B. Light is a source of sound
- C. The Moon reflects sunlight
- D. Light can bend round corners
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