Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 971 · 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.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) nothing on your head (d) a woollen sweater
2. 2.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
3. 3.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
4. 4.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
5. 5.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) wear a cap (d) look straight at the Sun
6. 6.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) yeast (c) a straight stick (d) a clock to check
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
8. 8.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
10. 10.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
11. 11.🔦 Which of these is translucent? (a) a book (b) tissue paper (c) a steel plate (d) your hand
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a mirror (c) a straight stick (d) a sunny open place
13. 13.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
14. 14.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) a magnet (d) turmeric powder
15. 15.📘 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
16. 16.⚖️ 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
17. 17.🔦 Which of these is transparent? (a) frosted glass (b) a wooden board (c) a book (d) clean water
18. 18.🔍 Which is the odd one out? (a) a wooden board (b) a brick (c) clear plastic film (d) a steel plate
19. 19.🧺 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 balloon
20. 20.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
21. 21.🔍 Which is the odd one out? (a) clean water (b) a book (c) air (d) clear glass
22. 22.⚖️ 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) the time of day (c) the same stick (d) the same spot
23. 23.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
24. 24.⚖️ 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
25. 25.True or false: a mirror is needed for the shadow clock. (a) True (b) False
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) turmeric powder (c) a straight stick (d) chalk to mark shadows
27. 27.🔦 Which of these is opaque? (a) a book (b) frosted glass (c) clear glass (d) oily paper
28. 28.🔍 Which is the odd one out? (a) tissue paper (b) air (c) oily paper (d) butter paper
29. 29.⚖️ 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
30. 30.🔦 Which of these is opaque? (a) clean water (b) a steel plate (c) oily paper (d) frosted glass
31. 31.True or false: a brick is opaque. (a) True (b) False
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🔦 Which of these is translucent? (a) clean water (b) a book (c) frosted glass (d) air
34. 34.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a magnet (d) a clock to check
35. 35.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
36. 36.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a clock to check (c) turmeric powder (d) a mirror
37. 37.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) making rainbows (d) telling the time
38. 38.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
39. 39.⚖️ 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
40. 40.True or false: a book is transparent. (a) False (b) True

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