Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 941 · 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.🧺 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 sunny open place (d) a balloon
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
3. 3.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
4. 4.🔦 Which of these is translucent? (a) a brick (b) clean water (c) butter paper (d) a steel plate
5. 5.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a straight stick (d) a clock to check
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
8. 8.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) turmeric powder (c) chalk to mark shadows (d) a straight stick
10. 10.🔍 Which is the odd one out? (a) a book (b) a brick (c) a steel plate (d) frosted glass
11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) yeast (c) a straight stick (d) a clock to check
12. 12.🔦 Is air opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
13. 13.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) east (c) up (d) north
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
15. 15.⚖️ 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) False (b) True
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
18. 18.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
20. 20.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
21. 21.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
22. 22.🔦 Which of these is transparent? (a) your hand (b) a wooden board (c) clear glass (d) tissue paper
23. 23.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
24. 24.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) bigger (d) smaller
25. 25.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a battery cell (c) a clock to check (d) a mirror
26. 26.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) weighing things (d) telling the time
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same stick (c) the time of day (d) the same spot
28. 28.⚖️ 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) True (b) False
29. 29.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
30. 30.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
31. 31.True or false: clear plastic film is opaque. (a) False (b) True
32. 32.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) the stick walks (d) Earth keeps spinning
33. 33.🔦 Which of these is translucent? (a) clean water (b) frosted glass (c) a steel plate (d) clear glass
34. 34.🧺 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 battery cell
35. 35.🔦 Which of these is opaque? (a) frosted glass (b) a wooden board (c) oily paper (d) clear plastic film
36. 36.🔦 Which of these is transparent? (a) clear plastic film (b) butter paper (c) a wooden board (d) tissue paper
37. 37.🔍 Which is the odd one out? (a) air (b) clean water (c) tissue paper (d) clear glass
38. 38.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
39. 39.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a brick (b) clear plastic film (c) clean water (d) air

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