Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 221 · 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 a shadow form? (a) an object blocks light (b) the ground is dark (c) the object is cold (d) light bends round it
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) a battery cell (d) chalk to mark shadows
3. 3.⚖️ 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
4. 4.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
5. 5.⚖️ 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
6. 6.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) around noon (d) early morning
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
8. 8.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
9. 9.🛟 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
10. 10.⚖️ 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) True (b) False
11. 11.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
12. 12.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
13. 13.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
14. 14.🔍 Which is the odd one out? (a) clean water (b) air (c) clear glass (d) your hand
15. 15.🔍 Which is the odd one out? (a) oily paper (b) air (c) butter paper (d) tissue paper
16. 16.🔦 Which of these is transparent? (a) tissue paper (b) clear glass (c) frosted glass (d) a steel plate
17. 17.🧺 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 magnet (d) chalk to mark shadows
18. 18.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) yeast (c) chalk to mark shadows (d) a mirror
19. 19.🕰️ What is a sundial used for? (a) making rainbows (b) telling the time (c) measuring rain (d) weighing things
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.True or false: a magnet is needed for the shadow clock. (a) False (b) True
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
24. 24.True or false: a steel plate is transparent. (a) False (b) True
25. 25.🔦 Which of these is translucent? (a) air (b) a book (c) clean water (d) tissue paper
26. 26.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) a straight stick (d) yeast
28. 28.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
29. 29.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same stick (c) shadow length
31. 31.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
32. 32.True or false: frosted glass is opaque. (a) True (b) False
33. 33.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
34. 34.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a straight stick (c) chalk to mark shadows (d) a clock to check
35. 35.🧺 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 mirror (d) chalk to mark shadows
36. 36.🔦 Which of these is opaque? (a) clear plastic film (b) oily paper (c) butter paper (d) a brick
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) wear a cap (d) sit in the shade

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