Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 127 · 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.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) coloured (d) brighter
2. 2.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the same spot (c) shadow length (d) the stick kept upright
4. 4.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick grows (c) the ground slides (d) the stick walks
5. 5.⚖️ 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
6. 6.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.🔦 Which of these is transparent? (a) tissue paper (b) a brick (c) clean water (d) a book
9. 9.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) late evening (d) early morning
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same stick (c) the stick kept upright (d) shadow length
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
14. 14.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
15. 15.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) long (d) missing
16. 16.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
17. 17.True or false: a magnet is needed for the shadow clock. (a) False (b) True
18. 18.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) light bends round it (d) the object is cold
19. 19.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) up (c) east (d) north
20. 20.🧺 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
21. 21.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) a straight stick (d) a mirror
22. 22.🔦 Which of these is translucent? (a) clean water (b) a steel plate (c) butter paper (d) a wooden board
23. 23.True or false: a book is transparent. (a) False (b) True
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) a battery cell
25. 25.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
26. 26.🧺 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 mirror
27. 27.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
28. 28.🧺 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) yeast (d) a clock to check
29. 29.True or false: a brick is opaque. (a) False (b) True
30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) turmeric powder (d) a clock to check
31. 31.🔦 Which of these is opaque? (a) clear glass (b) air (c) oily paper (d) a wooden board
32. 32.🔦 Which of these is translucent? (a) a steel plate (b) frosted glass (c) air (d) clear plastic film
33. 33.🔍 Which is the odd one out? (a) frosted glass (b) a brick (c) oily paper (d) tissue paper
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) your hand (b) a book (c) a steel plate (d) oily paper
36. 36.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a woollen sweater (d) a cap or hat
37. 37.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) butter paper (b) a wooden board (c) oily paper (d) tissue paper
39. 39.🔦 Which of these is opaque? (a) clear plastic film (b) a book (c) air (d) clear glass
40. 40.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) a battery cell (d) chalk to mark shadows

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