Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 748 · 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 the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
2. 2.⚖️ 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
3. 3.True or false: a steel plate is transparent. (a) False (b) True
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same stick (c) the same spot (d) the time of day
5. 5.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) long (d) round
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
7. 7.📘 Why does a shadow form? (a) an object blocks light (b) the ground is dark (c) the object is cold (d) light bends round it
8. 8.True or false: tissue paper is transparent. (a) True (b) False
9. 9.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
10. 10.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
11. 11.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
12. 12.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
13. 13.🔦 Which of these is translucent? (a) clear plastic film (b) frosted glass (c) your hand (d) a brick
14. 14.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) a battery cell (d) chalk to mark shadows
15. 15.True or false: a brick is translucent. (a) True (b) False
16. 16.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time
17. 17.🔦 Which of these is translucent? (a) clean water (b) butter paper (c) clear glass (d) your hand
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a magnet (d) chalk to mark shadows
19. 19.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
20. 20.True or false: your hand is opaque. (a) True (b) False
21. 21.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a magnet (c) a battery cell (d) a balloon
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
23. 23.🛟 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
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a clock to check (c) chalk to mark shadows (d) a sunny open place
25. 25.⚖️ 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
26. 26.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
27. 27.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
28. 28.🔍 Which is the odd one out? (a) clear plastic film (b) frosted glass (c) butter paper (d) tissue paper
29. 29.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) turmeric powder
30. 30.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
31. 31.True or false: a book is opaque. (a) True (b) False
32. 32.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a woollen sweater (c) nothing on your head (d) a cap or hat
33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) turmeric powder
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) yeast (d) a straight stick
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the same spot (c) the time of day (d) the same stick
37. 37.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) yeast (d) a clock to check
40. 40.True or false: a mirror is needed for the shadow clock. (a) False (b) True

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