Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 831 · 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.⚖️ 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) shadow length (c) the same stick (d) the same spot
2. 2.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
4. 4.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
5. 5.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
6. 6.🔦 Which of these is transparent? (a) a steel plate (b) clear glass (c) a brick (d) oily paper
7. 7.🔍 Which is the odd one out? (a) your hand (b) air (c) clear plastic film (d) clean water
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a clock to check (c) a straight stick (d) chalk to mark shadows
10. 10.⚖️ 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) the time of day (c) shadow length
11. 11.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) mark with chalk (d) look straight at the Sun
12. 12.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) clear plastic film (b) oily paper (c) tissue paper (d) frosted glass
15. 15.True or false: a book is translucent. (a) False (b) True
16. 16.True or false: frosted glass is opaque. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a wooden board (b) a book (c) a steel plate (d) clear glass
18. 18.⚖️ 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
19. 19.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) a straight stick (d) turmeric powder
22. 22.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
23. 23.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a battery cell (d) a straight stick
26. 26.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a cap or hat (d) a raincoat
27. 27.🔦 Which of these is transparent? (a) clean water (b) frosted glass (c) a book (d) tissue paper
28. 28.True or false: air is translucent. (a) False (b) True
29. 29.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) yeast (c) a straight stick (d) chalk to mark shadows
30. 30.True or false: a book is opaque. (a) True (b) False
31. 31.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
32. 32.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) turmeric powder (c) a battery cell (d) a mirror
33. 33.⚖️ 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
34. 34.⚖️ 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
35. 35.🧺 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 clock to check (d) a magnet
36. 36.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
37. 37.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) your hand (d) butter paper
38. 38.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the time of day (c) the same stick (d) the same spot
40. 40.⚖️ 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

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