Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 416 · 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.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
2. 2.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) brighter (c) smaller (d) coloured
3. 3.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) up (c) east (d) north
4. 4.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) air (b) clear glass (c) clean water (d) butter paper
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 measure it (b) we keep it the same (c) we change it
7. 7.True or false: a brick is opaque. (a) True (b) False
8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a sunny open place (d) a straight stick
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.⚖️ 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
11. 11.True or false: your hand is opaque. (a) True (b) False
12. 12.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
13. 13.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) Earth keeps spinning (c) the ground slides (d) the stick walks
14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a straight stick (c) a clock to check (d) chalk to mark shadows
15. 15.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) sit in the shade (d) mark with chalk
16. 16.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
17. 17.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
18. 18.True or false: a brick is translucent. (a) True (b) False
19. 19.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) late evening (d) around noon
20. 20.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a battery cell
21. 21.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) butter paper (d) a wooden board
23. 23.🛟 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
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
25. 25.🔦 Which of these is opaque? (a) clear plastic film (b) butter paper (c) a steel plate (d) clear glass
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a straight stick (c) chalk to mark shadows (d) a clock to check
27. 27.⚖️ 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) False (b) True
28. 28.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) a mirror
29. 29.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the stick kept upright
32. 32.⚖️ 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 same spot (c) the time of day (d) the stick kept upright
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🔦 Which of these is opaque? (a) butter paper (b) a brick (c) frosted glass (d) air
35. 35.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a magnet (c) a balloon (d) a mirror
36. 36.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
37. 37.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
38. 38.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a balloon (c) chalk to mark shadows (d) a clock to check
40. 40.🔦 Which of these is translucent? (a) your hand (b) tissue paper (c) air (d) clean water

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