Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 149 · 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) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
2. 2.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) tissue paper (d) your hand
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a clock to check (d) a straight stick
5. 5.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
6. 6.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
7. 7.True or false: yeast is not needed for the shadow clock. (a) False (b) True
8. 8.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) sit in the shade (d) mark with chalk
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
10. 10.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) Earth keeps spinning (d) the stick grows
11. 11.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) yeast (c) a straight stick (d) a magnet
12. 12.⚖️ 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
13. 13.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) shows two times (d) works better
14. 14.True or false: clear plastic film is transparent. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a book (b) clear glass (c) a wooden board (d) a steel plate
16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
17. 17.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a magnet (c) chalk to mark shadows (d) a sunny open place
19. 19.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) turmeric powder (d) a clock to check
20. 20.⚖️ 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) False (b) True
21. 21.True or false: yeast is needed for the shadow clock. (a) False (b) True
22. 22.True or false: your hand is opaque. (a) False (b) True
23. 23.🧺 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) turmeric powder (d) a straight stick
24. 24.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) a sunny open place (d) chalk to mark shadows
26. 26.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
27. 27.🕰️ What is a sundial used for? (a) making rainbows (b) telling the time (c) measuring rain (d) weighing things
28. 28.⚖️ 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 stick kept upright (c) shadow length
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a clock to check (c) a straight stick (d) a sunny open place
31. 31.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) shadow length (c) the same stick (d) the stick kept upright
33. 33.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) brighter (d) coloured
34. 34.🌞 When is a stick’s shadow the shortest? (a) late evening (b) early morning (c) at night (d) around noon
35. 35.True or false: air is translucent. (a) False (b) True
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) a mirror (d) a sunny open place
37. 37.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) north (d) east
38. 38.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.🔦 Which of these is transparent? (a) a steel plate (b) a book (c) butter paper (d) clear plastic film

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