Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 589 · 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 brick opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
2. 2.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) frosted glass (d) air
4. 4.⚖️ 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
5. 5.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
6. 6.True or false: a mirror is needed for the shadow clock. (a) True (b) False
7. 7.🔦 Which of these is opaque? (a) butter paper (b) oily paper (c) air (d) a book
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.⚖️ 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) shadow length (c) the time of day
10. 10.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a balloon (d) chalk to mark shadows
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a straight stick (c) chalk to mark shadows (d) a sunny open place
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the stick kept upright (c) the same spot (d) shadow length
14. 14.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) a mirror
16. 16.🔦 Which of these is translucent? (a) a brick (b) clean water (c) a wooden board (d) tissue paper
17. 17.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
18. 18.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
19. 19.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
20. 20.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) an object blocks light (d) the ground is dark
21. 21.True or false: tissue paper is translucent. (a) False (b) True
22. 22.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) telling the time (d) weighing things
23. 23.True or false: air is opaque. (a) False (b) True
24. 24.True or false: a wooden board is transparent. (a) True (b) False
25. 25.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) missing (d) short
26. 26.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) butter paper (d) air
28. 28.⚖️ 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
29. 29.🧺 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) yeast (d) a straight stick
30. 30.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) yeast (d) chalk to mark shadows
31. 31.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) clean water (d) oily paper
32. 32.⚖️ 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
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
35. 35.🔦 Which of these is opaque? (a) butter paper (b) air (c) clean water (d) your hand
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) shadow length (c) the same stick (d) the same spot
38. 38.⚖️ 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
39. 39.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
40. 40.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent

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