Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 452 · 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 oily paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
2. 2.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a magnet (d) yeast
5. 5.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
6. 6.True or false: a book is opaque. (a) True (b) False
7. 7.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a balloon (d) a sunny open place
8. 8.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) smaller (d) brighter
10. 10.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
11. 11.True or false: yeast is needed for the shadow clock. (a) False (b) True
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a clock to check (c) a sunny open place (d) a straight stick
13. 13.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.True or false: clear glass is opaque. (a) False (b) True
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) oily paper (d) a brick
18. 18.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) the ground is dark (d) an object blocks light
19. 19.⚖️ 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 same stick (c) the stick kept upright (d) the time of day
20. 20.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) turmeric powder (c) yeast (d) a magnet
21. 21.⚖️ 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
22. 22.True or false: a wooden board is translucent. (a) False (b) True
23. 23.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a battery cell (c) yeast (d) a sunny open place
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) chalk to mark shadows (c) a clock to check (d) a straight stick
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) chalk to mark shadows (c) a sunny open place (d) a clock to check
27. 27.🔦 Which of these is opaque? (a) butter paper (b) clear glass (c) a wooden board (d) clean water
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) turmeric powder (d) a sunny open place
29. 29.⚖️ 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
30. 30.⚖️ 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 stick kept upright (d) the same stick
31. 31.🔍 Which is the odd one out? (a) a book (b) air (c) your hand (d) a brick
32. 32.True or false: your hand is translucent. (a) False (b) True
33. 33.🔦 Which of these is opaque? (a) clear glass (b) a book (c) clean water (d) clear plastic film
34. 34.True or false: a magnet is needed for the shadow clock. (a) True (b) False
35. 35.🔦 Which of these is translucent? (a) air (b) your hand (c) a wooden board (d) tissue paper
36. 36.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
37. 37.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) telling the time (d) measuring rain
38. 38.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
39. 39.🔦 Which of these is translucent? (a) frosted glass (b) air (c) a wooden board (d) a book
40. 40.True or false: a magnet is not needed for the shadow clock. (a) True (b) False

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