Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 646 · 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 is the odd one out? (a) your hand (b) clear plastic film (c) a brick (d) a book
2. 2.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 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) chalk to mark shadows
5. 5.⚖️ 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 spot (c) shadow length
6. 6.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
7. 7.🔦 Which of these is transparent? (a) tissue paper (b) air (c) butter paper (d) a wooden board
8. 8.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) yeast
10. 10.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
11. 11.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) east (d) up
12. 12.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a battery cell (d) a straight stick
13. 13.True or false: clean water is transparent. (a) False (b) True
14. 14.True or false: clear glass is transparent. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) butter paper (b) a book (c) oily paper (d) frosted glass
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the same spot (c) the time of day (d) shadow length
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) a battery cell
18. 18.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) mark with chalk (d) wear a cap
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.⚖️ 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
21. 21.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
22. 22.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a magnet
24. 24.⚖️ 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
25. 25.⚖️ 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) False (b) True
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a mirror (c) a magnet (d) a balloon
28. 28.🛟 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
29. 29.True or false: clear plastic film is translucent. (a) True (b) False
30. 30.True or false: a brick is translucent. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a brick (b) a wooden board (c) a steel plate (d) oily paper
32. 32.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
33. 33.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
34. 34.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
35. 35.🔦 Which of these is opaque? (a) a book (b) clear glass (c) oily paper (d) frosted glass
36. 36.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
37. 37.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a balloon (c) chalk to mark shadows (d) a clock to check
38. 38.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) a magnet
39. 39.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
40. 40.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick grows (c) the ground slides (d) the stick walks

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