Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 711 · 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 needed for the shadow clock? (a) a mirror (b) yeast (c) a sunny open place (d) a balloon
2. 2.⚖️ 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
3. 3.True or false: clean water is opaque. (a) True (b) False
4. 4.📘 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
5. 5.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a straight stick (d) a battery cell
6. 6.⚖️ 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
7. 7.🔍 Which is the odd one out? (a) your hand (b) a book (c) a brick (d) butter paper
8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a balloon (d) a sunny open place
9. 9.🔍 Which is the odd one out? (a) a wooden board (b) a book (c) air (d) a steel plate
10. 10.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) does not work well (d) works better
11. 11.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
12. 12.⚖️ 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
13. 13.⚖️ 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) shadow length (c) the same spot
14. 14.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
15. 15.⚖️ 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) the time of day (c) shadow length (d) the same spot
16. 16.⚖️ 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
17. 17.🕰️ What is a sundial used for? (a) weighing things (b) telling the time (c) making rainbows (d) measuring rain
18. 18.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) a mirror (d) turmeric powder
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 time of day (c) the stick kept upright (d) the same spot
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
22. 22.⚖️ 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
23. 23.🔍 Which is the odd one out? (a) your hand (b) a wooden board (c) a brick (d) clean water
24. 24.🛟 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
25. 25.True or false: a magnet is needed for the shadow clock. (a) False (b) True
26. 26.⚖️ 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
27. 27.True or false: a steel plate is translucent. (a) False (b) True
28. 28.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
29. 29.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
30. 30.🧺 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 clock to check (d) a mirror
31. 31.🔦 Which of these is transparent? (a) a steel plate (b) butter paper (c) tissue paper (d) clear plastic film
32. 32.🛟 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
33. 33.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) yeast (d) a clock to check
34. 34.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
35. 35.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
36. 36.True or false: yeast is not needed for the shadow clock. (a) True (b) False
37. 37.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
38. 38.⚖️ 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
39. 39.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
40. 40.True or false: a brick is translucent. (a) True (b) False

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