Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 204 · 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.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
2. 2.🔦 Which of these is translucent? (a) air (b) clean water (c) frosted glass (d) clear glass
3. 3.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) shadow length (c) the time of day
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) the stick kept upright (c) shadow length (d) the time of day
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 sunny open place (d) a balloon
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) frosted glass (b) a wooden board (c) oily paper (d) butter paper
11. 11.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
12. 12.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
13. 13.True or false: clear glass is opaque. (a) False (b) True
14. 14.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
15. 15.⚖️ 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) True (b) False
16. 16.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a battery cell
19. 19.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) a straight stick (d) a magnet
20. 20.⚖️ 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
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
23. 23.⚖️ 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) shadow length (d) the time of day
24. 24.🔍 Which is the odd one out? (a) your hand (b) frosted glass (c) butter paper (d) oily paper
25. 25.🔦 Which of these is transparent? (a) oily paper (b) tissue paper (c) a wooden board (d) clean water
26. 26.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
27. 27.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
28. 28.⚖️ 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 keep it the same (c) we measure it
29. 29.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) nothing on your head (d) a woollen sweater
30. 30.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
31. 31.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
32. 32.🔍 Which is the odd one out? (a) a wooden board (b) a book (c) your hand (d) butter paper
33. 33.🔦 Which of these is translucent? (a) a steel plate (b) your hand (c) butter paper (d) a book
34. 34.True or false: tissue paper is transparent. (a) False (b) True
35. 35.📘 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
36. 36.True or false: a balloon is needed for the shadow clock. (a) False (b) True
37. 37.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
38. 38.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) brighter (d) coloured
39. 39.True or false: yeast is needed for the shadow clock. (a) False (b) True
40. 40.⚖️ 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

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