Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 357 · 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 not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a magnet (d) a sunny open place
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) a balloon
3. 3.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) west (d) up
4. 4.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
5. 5.True or false: butter paper is translucent. (a) False (b) True
6. 6.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
7. 7.True or false: tissue paper is opaque. (a) False (b) True
8. 8.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
11. 11.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
12. 12.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) clean water (d) butter paper
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) False (b) True
14. 14.📘 Why does a shadow form? (a) an object blocks light (b) light bends round it (c) the ground is dark (d) the object is cold
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the time of day (c) the stick kept upright (d) shadow length
16. 16.🔦 Which of these is opaque? (a) clean water (b) a steel plate (c) clear plastic film (d) air
17. 17.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
18. 18.🔦 Which of these is opaque? (a) your hand (b) air (c) tissue paper (d) clear plastic film
19. 19.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
20. 20.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
21. 21.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a balloon (c) a clock to check (d) chalk to mark shadows
22. 22.🔦 Which of these is transparent? (a) a wooden board (b) your hand (c) a brick (d) clear plastic film
23. 23.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
24. 24.⚖️ 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
25. 25.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) Earth keeps spinning (c) the stick walks (d) the ground slides
26. 26.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a magnet (c) chalk to mark shadows (d) a sunny open place
28. 28.True or false: a book is opaque. (a) False (b) True
29. 29.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
30. 30.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
31. 31.🔦 Which of these is opaque? (a) butter paper (b) a wooden board (c) frosted glass (d) clean water
32. 32.🔍 Which is the odd one out? (a) air (b) a book (c) a wooden board (d) a brick
33. 33.🔍 Which is the odd one out? (a) tissue paper (b) butter paper (c) frosted glass (d) a brick
34. 34.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a battery cell (d) a clock to check
35. 35.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) your hand (d) frosted glass
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) wear a cap (d) mark with chalk
38. 38.⚖️ 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
39. 39.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
40. 40.🔦 Which of these is translucent? (a) a wooden board (b) your hand (c) a book (d) frosted glass

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