Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 990 · 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.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
3. 3.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) the ground is dark (d) light bends round it
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) a steel plate (d) clear glass
6. 6.🧺 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) a sunny open place
7. 7.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
8. 8.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
9. 9.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
10. 10.🔦 Which of these is opaque? (a) a book (b) tissue paper (c) clean water (d) clear plastic film
11. 11.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
12. 12.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) a mirror
13. 13.True or false: air is transparent. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) a wooden board (b) your hand (c) butter paper (d) a steel plate
15. 15.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) smaller (d) brighter
16. 16.🔦 Which of these is transparent? (a) clean water (b) a wooden board (c) your hand (d) butter paper
17. 17.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
19. 19.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
20. 20.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) a balloon (d) turmeric powder
21. 21.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) air (d) tissue paper
22. 22.🔍 Which is the odd one out? (a) tissue paper (b) butter paper (c) clear glass (d) frosted glass
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) tissue paper (d) a wooden board
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) yeast
26. 26.True or false: clean water is translucent. (a) True (b) False
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a clock to check (c) yeast (d) a magnet
29. 29.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a sunny open place (d) a battery cell
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a clock to check (c) a straight stick (d) a sunny open place
32. 32.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a cap or hat (d) a raincoat
33. 33.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
34. 34.True or false: frosted glass is translucent. (a) False (b) True
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the same stick (c) the same spot (d) shadow length
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a balloon (d) a clock to check
37. 37.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
38. 38.🔦 Which of these is transparent? (a) frosted glass (b) butter paper (c) clear glass (d) your hand
39. 39.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we change it (c) we measure it

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