Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 600 · 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 of these is opaque? (a) a wooden board (b) butter paper (c) oily paper (d) clean water
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a sunny open place (d) a straight stick
3. 3.🧺 Which of these is not needed for the shadow clock? (a) a battery cell (b) a straight stick (c) a sunny open place (d) a clock to check
4. 4.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
5. 5.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same stick (c) the time of day (d) the stick kept upright
8. 8.⚖️ 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
9. 9.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
10. 10.True or false: yeast is needed for the shadow clock. (a) True (b) False
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) a magnet
12. 12.🔍 Which is the odd one out? (a) air (b) clear plastic film (c) clear glass (d) tissue paper
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a mirror (c) a sunny open place (d) a straight stick
14. 14.🔍 Which is the odd one out? (a) butter paper (b) a wooden board (c) a steel plate (d) a brick
15. 15.🔦 Which of these is transparent? (a) a brick (b) air (c) a wooden board (d) your hand
16. 16.⚖️ 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 keep it the same (c) we measure it
17. 17.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a clock to check (d) yeast
18. 18.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
19. 19.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
20. 20.⚖️ 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
21. 21.True or false: a magnet is needed for the shadow clock. (a) True (b) False
22. 22.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
23. 23.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
24. 24.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
25. 25.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a mirror (c) a balloon (d) a battery cell
26. 26.⚖️ 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
27. 27.True or false: a mirror is needed for the shadow clock. (a) False (b) True
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) a straight stick (d) a sunny open place
29. 29.🛟 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
30. 30.⚖️ 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
31. 31.True or false: your hand is opaque. (a) False (b) True
32. 32.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) the object is cold (d) an object blocks light
33. 33.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
34. 34.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) east (d) up
35. 35.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
36. 36.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) yeast (d) a sunny open place
37. 37.⚖️ 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
38. 38.🔦 Which of these is translucent? (a) your hand (b) a brick (c) clear glass (d) butter paper
39. 39.True or false: butter paper is translucent. (a) True (b) False
40. 40.🔦 Which of these is translucent? (a) a book (b) a steel plate (c) a brick (d) oily paper

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