Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 238 · 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) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
2. 2.True or false: yeast is needed for the shadow clock. (a) True (b) False
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) shadow length (c) the time of day
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the same stick (c) the stick kept upright (d) the time of day
9. 9.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
10. 10.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
12. 12.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
16. 16.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
17. 17.🔦 Which of these is transparent? (a) butter paper (b) tissue paper (c) clear glass (d) oily paper
18. 18.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
19. 19.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a balloon (c) turmeric powder (d) yeast
20. 20.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) nothing on your head (d) a raincoat
21. 21.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) short (d) long
22. 22.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a battery cell (c) a sunny open place (d) chalk to mark shadows
24. 24.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) bigger (d) coloured
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.⚖️ 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) True (b) False
27. 27.True or false: a wooden board is transparent. (a) False (b) True
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a magnet
29. 29.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) your hand (d) clear plastic film
30. 30.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
31. 31.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) telling the time (d) making rainbows
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a straight stick (d) a sunny open place
33. 33.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) up (c) east (d) north
34. 34.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a battery cell (c) a magnet (d) a mirror
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
37. 37.🔦 Which of these is opaque? (a) butter paper (b) air (c) oily paper (d) a steel plate
38. 38.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
39. 39.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
40. 40.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed

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