Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 323 · 40 questions

What you do (Shadows point away from the Sun): 1. Stand the stick upright in the ground in an open sunny place. 2. Every hour, mark the tip of the shadow with chalk and write the time. 3. Measure the length of each shadow. 4. Wear a cap and never look straight at the Sun.

1. 1.📘 Why does a shadow form? (a) an object blocks light (b) the ground is dark (c) light bends round it (d) the object is cold
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) a balloon
4. 4.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) frosted glass (d) your hand
5. 5.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
6. 6.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) a magnet (d) a straight stick
8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a battery cell (d) chalk to mark shadows
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the same spot (c) shadow length (d) the same stick
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) yeast
11. 11.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) north (d) east
12. 12.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
14. 14.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
15. 15.🔦 Which of these is opaque? (a) a wooden board (b) tissue paper (c) air (d) oily paper
16. 16.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a balloon (c) a straight stick (d) chalk to mark shadows
17. 17.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) turmeric powder (c) a clock to check (d) a straight stick
19. 19.🔍 Which is the odd one out? (a) tissue paper (b) butter paper (c) frosted glass (d) clear glass
20. 20.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
21. 21.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) a woollen sweater (d) nothing on your head
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a mirror (d) chalk to mark shadows
23. 23.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a magnet (d) a straight stick
24. 24.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
25. 25.🔦 Which of these is translucent? (a) clean water (b) tissue paper (c) air (d) clear plastic film
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
27. 27.True or false: a steel plate is transparent. (a) True (b) False
28. 28.🔦 Which of these is opaque? (a) oily paper (b) clear plastic film (c) clean water (d) a brick
29. 29.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
30. 30.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a battery cell (d) a sunny open place
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) False (b) True
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same stick (c) shadow length
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) short (d) long
36. 36.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) False (b) True

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