Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 912 · 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.⚖️ 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
2. 2.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head
3. 3.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) yeast (d) a clock to check
4. 4.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
5. 5.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
6. 6.🔦 Which of these is transparent? (a) a book (b) clear glass (c) your hand (d) oily paper
7. 7.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the stick grows (d) the ground slides
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the stick kept upright (c) shadow length (d) the time of day
9. 9.True or false: a wooden board is transparent. (a) True (b) False
10. 10.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) a sunny open place (d) a mirror
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.⚖️ 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
13. 13.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
14. 14.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) look straight at the Sun (d) wear a cap
15. 15.🔦 Which of these is opaque? (a) butter paper (b) clear glass (c) frosted glass (d) a steel plate
16. 16.True or false: frosted glass is transparent. (a) False (b) True
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
18. 18.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) yeast (d) a clock to check
20. 20.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
21. 21.🧺 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) a sunny open place
22. 22.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
23. 23.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a mirror (c) turmeric powder (d) chalk to mark shadows
24. 24.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) air (d) a brick
27. 27.🔍 Which is the odd one out? (a) oily paper (b) clear glass (c) frosted glass (d) butter paper
28. 28.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
29. 29.True or false: oily paper is translucent. (a) True (b) False
30. 30.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
31. 31.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a clock to check (d) a sunny open place
32. 32.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
33. 33.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
34. 34.⚖️ 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 measure it (c) we change it
35. 35.⚖️ 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
36. 36.🔦 Which of these is transparent? (a) clean water (b) frosted glass (c) tissue paper (d) a book
37. 37.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
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.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) bigger (d) brighter

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