Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 822 · 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.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) a balloon
3. 3.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) a balloon
4. 4.⚖️ 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
5. 5.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
6. 6.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
8. 8.True or false: a brick is transparent. (a) True (b) False
9. 9.🔦 Which of these is opaque? (a) clean water (b) clear plastic film (c) a brick (d) frosted glass
10. 10.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the same spot (c) the time of day
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a battery cell (d) a clock to check
13. 13.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
14. 14.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
15. 15.True or false: butter paper is opaque. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a brick (b) oily paper (c) a book (d) your hand
17. 17.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a clock to check (c) yeast (d) a magnet
18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) bigger (d) coloured
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) False (b) True
20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) yeast (d) a sunny open place
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) chalk to mark shadows (d) a magnet
22. 22.🔦 Which of these is opaque? (a) air (b) butter paper (c) clear glass (d) a book
23. 23.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) nothing on your head (d) a raincoat
24. 24.🔦 Which of these is translucent? (a) a wooden board (b) butter paper (c) clean water (d) air
25. 25.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) the time of day (c) the same stick (d) shadow length
27. 27.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
28. 28.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) oily paper (d) clear glass
29. 29.⚖️ 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) False (b) True
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) turmeric powder
34. 34.🔍 Which is the odd one out? (a) butter paper (b) a brick (c) a steel plate (d) a wooden board
35. 35.🔦 Which of these is translucent? (a) clear plastic film (b) tissue paper (c) a book (d) a steel plate
36. 36.⚖️ 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
37. 37.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
38. 38.True or false: a wooden board is translucent. (a) True (b) False
39. 39.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick walks (d) the stick grows
40. 40.True or false: frosted glass is translucent. (a) True (b) False

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