Shadow and Sundial Experiment Worksheet

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

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