Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 232 · 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) yeast (d) a clock to check
2. 2.⚖️ 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 spot (d) the same stick
3. 3.True or false: clear glass is transparent. (a) False (b) True
4. 4.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a battery cell (c) a straight stick (d) turmeric powder
6. 6.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) nothing on your head (d) a raincoat
7. 7.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a balloon (d) a straight stick
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the same spot (c) the time of day
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.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) weighing things (d) making rainbows
11. 11.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) east (c) up (d) north
12. 12.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) the object is cold (d) light bends round it
13. 13.⚖️ 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
14. 14.True or false: clean water is opaque. (a) False (b) True
15. 15.⚖️ 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 same stick (c) the stick kept upright (d) the time of day
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a balloon
18. 18.True or false: air is transparent. (a) False (b) True
19. 19.⚖️ 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 change it (c) we measure it
20. 20.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) look straight at the Sun (d) wear a cap
21. 21.🔦 Which of these is opaque? (a) a wooden board (b) frosted glass (c) butter paper (d) clear plastic film
22. 22.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
23. 23.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
24. 24.🔍 Which is the odd one out? (a) oily paper (b) a brick (c) a steel plate (d) a wooden board
25. 25.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) early morning (d) around noon
26. 26.🔍 Which is the odd one out? (a) butter paper (b) a steel plate (c) oily paper (d) frosted glass
27. 27.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
28. 28.True or false: a wooden board is transparent. (a) False (b) True
29. 29.🧺 Which of these is not needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
30. 30.⚖️ 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
31. 31.True or false: air is translucent. (a) False (b) True
32. 32.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
33. 33.🌍 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
34. 34.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
35. 35.True or false: a steel plate is opaque. (a) False (b) True
36. 36.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
37. 37.True or false: a book is transparent. (a) False (b) True
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a straight stick (c) a clock to check (d) chalk to mark shadows
40. 40.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque

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