Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 861 · 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.🧺 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 battery cell (d) a clock to check
2. 2.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
3. 3.⚖️ 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 change it (c) we measure it
4. 4.⚖️ 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 stick kept upright (c) the same stick (d) the same spot
5. 5.🔦 Which of these is translucent? (a) clean water (b) a book (c) a steel plate (d) butter paper
6. 6.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) a wooden board (b) a brick (c) a steel plate (d) clear plastic film
8. 8.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) weighing things (d) making rainbows
9. 9.⚖️ 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) the stick kept upright (c) the time of day (d) shadow length
10. 10.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) yeast (d) a sunny open place
11. 11.🧺 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) a straight stick (d) a balloon
12. 12.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) an object blocks light (d) the ground is dark
13. 13.True or false: yeast is not needed for the shadow clock. (a) True (b) False
14. 14.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a clock to check (c) chalk to mark shadows (d) a straight stick
15. 15.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
16. 16.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
17. 17.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
18. 18.True or false: frosted glass is opaque. (a) True (b) False
19. 19.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
20. 20.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
21. 21.🔦 Which of these is opaque? (a) clear plastic film (b) frosted glass (c) a book (d) clean water
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) shadow length (c) the time of day
23. 23.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) Earth keeps spinning (d) the ground slides
24. 24.True or false: a magnet is needed for the shadow clock. (a) True (b) False
25. 25.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) turmeric powder (d) chalk to mark shadows
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) a straight stick (d) chalk to mark shadows
28. 28.🔍 Which is the odd one out? (a) a wooden board (b) oily paper (c) tissue paper (d) butter paper
29. 29.⚖️ 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
30. 30.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
31. 31.🛟 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
32. 32.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
33. 33.🔍 Which is the odd one out? (a) clear glass (b) air (c) clean water (d) tissue paper
34. 34.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
35. 35.🧺 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
36. 36.🔍 Which is the odd one out? (a) butter paper (b) a brick (c) tissue paper (d) frosted glass
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
38. 38.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
39. 39.⚖️ 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 same stick
40. 40.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) a book (d) air

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