Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 730 · 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.🔦 Which of these is translucent? (a) a book (b) a steel plate (c) clean water (d) frosted glass
2. 2.⚖️ 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
3. 3.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
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.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
6. 6.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) chalk to mark shadows (d) a clock to check
7. 7.True or false: a steel plate is translucent. (a) True (b) False
8. 8.⚖️ 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) True (b) False
9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
10. 10.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) yeast (c) a sunny open place (d) a clock to check
12. 12.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
13. 13.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
14. 14.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
15. 15.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
16. 16.🧺 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 balloon (d) a straight stick
17. 17.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
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.⚖️ 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 spot (d) the same stick
20. 20.True or false: a balloon is needed for the shadow clock. (a) False (b) True
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a straight stick (c) a sunny open place (d) a clock to check
22. 22.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
23. 23.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a cap or hat (c) a woollen sweater (d) a raincoat
24. 24.⚖️ 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
25. 25.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
26. 26.📘 Why does a shadow form? (a) an object blocks light (b) light bends round it (c) the ground is dark (d) the object is cold
27. 27.🔦 Which of these is transparent? (a) a wooden board (b) a brick (c) a book (d) clear glass
28. 28.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a battery cell (c) a straight stick (d) chalk to mark shadows
30. 30.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a magnet (d) a straight stick
31. 31.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) up (d) north
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a sunny open place (c) a clock to check (d) a straight stick
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) shadow length (c) the time of day (d) the same spot
35. 35.True or false: butter paper is opaque. (a) True (b) False
36. 36.True or false: yeast is not needed for the shadow clock. (a) True (b) False
37. 37.True or false: your hand is translucent. (a) False (b) True
38. 38.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
39. 39.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) turmeric powder (c) a mirror (d) a magnet
40. 40.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent

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