Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 257 · 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 sunny open place (b) chalk to mark shadows (c) a magnet (d) a straight stick
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
4. 4.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
5. 5.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
7. 7.🧺 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) a straight stick (d) turmeric powder
8. 8.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) oily paper (b) air (c) frosted glass (d) tissue paper
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a battery cell (d) a straight stick
11. 11.⚖️ 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 stick (b) the same spot (c) the time of day (d) the stick kept upright
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.⚖️ 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) True (b) False
14. 14.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a clock to check (c) a balloon (d) a battery cell
15. 15.⚖️ 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
16. 16.🔍 Which is the odd one out? (a) clear glass (b) a wooden board (c) clear plastic film (d) clean water
17. 17.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) yeast (c) turmeric powder (d) a sunny open place
18. 18.True or false: a brick is opaque. (a) True (b) False
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the stick kept upright (c) the same stick (d) the same spot
20. 20.📘 Why does a shadow form? (a) an object blocks light (b) the ground is dark (c) light bends round it (d) the object is cold
21. 21.True or false: tissue paper is opaque. (a) True (b) False
22. 22.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) telling the time (d) making rainbows
23. 23.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
24. 24.⚖️ 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) shadow length (c) the time of day
25. 25.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
26. 26.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) the ground slides (d) Earth keeps spinning
27. 27.True or false: air is opaque. (a) True (b) False
28. 28.True or false: a magnet is needed for the shadow clock. (a) False (b) True
29. 29.🔦 Which of these is opaque? (a) oily paper (b) butter paper (c) clear glass (d) a wooden board
30. 30.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
31. 31.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade
34. 34.🔍 Which is the odd one out? (a) frosted glass (b) a brick (c) a wooden board (d) a steel plate
35. 35.True or false: air is translucent. (a) True (b) False
36. 36.🧺 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 mirror
37. 37.⚖️ 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
38. 38.🔦 Which of these is transparent? (a) oily paper (b) air (c) a book (d) frosted glass
39. 39.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
40. 40.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon

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