Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 136 · 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.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) shadow length (c) the time of day (d) the stick kept upright
2. 2.True or false: clean water is transparent. (a) False (b) True
3. 3.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
4. 4.🔦 Which of these is translucent? (a) clear plastic film (b) a book (c) air (d) frosted glass
5. 5.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
6. 6.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
7. 7.🛟 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
8. 8.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
9. 9.⚖️ 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 spot (c) the time of day (d) shadow length
10. 10.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
11. 11.🔦 Which of these is opaque? (a) clear plastic film (b) tissue paper (c) oily paper (d) a steel plate
12. 12.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) chalk to mark shadows (c) a clock to check (d) a straight stick
13. 13.🔦 Which of these is translucent? (a) butter paper (b) a steel plate (c) clean water (d) air
14. 14.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a balloon (c) a straight stick (d) chalk to mark shadows
16. 16.🛟 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
17. 17.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
18. 18.True or false: a wooden board is opaque. (a) False (b) True
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) a battery cell
20. 20.⚖️ 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
21. 21.⚖️ 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 time of day (c) the stick kept upright
22. 22.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a sunny open place (c) a balloon (d) a magnet
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) turmeric powder (d) chalk to mark shadows
26. 26.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) air (d) oily paper
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
29. 29.🔍 Which is the odd one out? (a) clear glass (b) oily paper (c) tissue paper (d) butter paper
30. 30.True or false: yeast is needed for the shadow clock. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) clean water (b) butter paper (c) frosted glass (d) oily paper
32. 32.True or false: a wooden board is transparent. (a) True (b) False
33. 33.⚖️ 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
34. 34.⚖️ 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
35. 35.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) a clock to check (d) a straight stick
37. 37.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) True (b) False
40. 40.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) an object blocks light (d) the object is cold

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