Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 304 · 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 not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a straight stick (d) a balloon
2. 2.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) long (d) missing
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
4. 4.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
5. 5.⚖️ 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
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
7. 7.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) mark with chalk (d) sit in the shade
8. 8.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) works better (d) runs faster
9. 9.🔦 Which of these is opaque? (a) frosted glass (b) a wooden board (c) clear glass (d) tissue paper
10. 10.🔦 Which of these is translucent? (a) air (b) clear glass (c) oily paper (d) a book
11. 11.True or false: yeast is needed for the shadow clock. (a) False (b) True
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same spot (c) the same stick (d) shadow length
13. 13.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a book (b) a brick (c) a wooden board (d) oily paper
16. 16.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
17. 17.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
18. 18.True or false: tissue paper is translucent. (a) False (b) True
19. 19.🌞 When is a stick’s shadow the shortest? (a) late evening (b) early morning (c) at night (d) around noon
20. 20.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
21. 21.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) the time of day (c) shadow length
23. 23.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a mirror (c) yeast (d) a magnet
24. 24.⚖️ 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 time of day (c) the same stick (d) shadow length
25. 25.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) weighing things (d) telling the time
26. 26.True or false: a brick is opaque. (a) False (b) True
27. 27.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) chalk to mark shadows (c) a magnet (d) turmeric powder
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
30. 30.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
31. 31.🔦 Which of these is transparent? (a) a brick (b) a steel plate (c) a book (d) clean water
32. 32.True or false: air is translucent. (a) False (b) True
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) up (d) west
35. 35.🔍 Which is the odd one out? (a) your hand (b) a brick (c) a book (d) clear glass
36. 36.🧺 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 balloon (d) a straight stick
37. 37.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a battery cell (c) turmeric powder (d) a mirror
38. 38.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a battery cell (d) a straight stick
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a mirror (c) a sunny open place (d) a straight stick
40. 40.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent

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