Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 395 · 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.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) round (d) missing
2. 2.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) light bends round it (d) the object is cold
3. 3.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
5. 5.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the stick kept upright (c) the time of day
7. 7.🔦 Which of these is opaque? (a) a steel plate (b) clear glass (c) oily paper (d) air
8. 8.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a battery cell (c) a straight stick (d) a clock to check
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ 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
11. 11.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
12. 12.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
13. 13.True or false: air is transparent. (a) True (b) False
14. 14.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) clean water (b) clear plastic film (c) a wooden board (d) clear glass
16. 16.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
17. 17.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
21. 21.⚖️ 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
22. 22.🔦 Which of these is transparent? (a) a book (b) clear glass (c) a brick (d) butter paper
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) False (b) True
26. 26.⚖️ 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
27. 27.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
28. 28.⚖️ 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
29. 29.True or false: a mirror is needed for the shadow clock. (a) False (b) True
30. 30.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
31. 31.🔦 Which of these is opaque? (a) a book (b) clear plastic film (c) butter paper (d) tissue paper
32. 32.⚖️ 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
33. 33.🔦 Which of these is transparent? (a) frosted glass (b) clear plastic film (c) a wooden board (d) a brick
34. 34.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
35. 35.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
36. 36.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the stick grows (d) the ground slides
37. 37.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
38. 38.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) chalk to mark shadows (c) a clock to check (d) a straight stick
40. 40.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed

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