Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 785 · 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.⚖️ 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) shadow length (c) the same stick (d) the time of day
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a straight stick (c) a clock to check (d) a sunny open place
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 measure it (b) we change it (c) we keep it the same
4. 4.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
5. 5.True or false: a brick is opaque. (a) True (b) False
6. 6.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) a straight stick (d) a balloon
7. 7.🔦 Which of these is opaque? (a) air (b) clear plastic film (c) clear glass (d) a steel plate
8. 8.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) yeast (c) chalk to mark shadows (d) a clock to check
12. 12.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) bigger (d) coloured
13. 13.True or false: a mirror is needed for the shadow clock. (a) True (b) False
14. 14.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
15. 15.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
16. 16.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) up (c) north (d) west
17. 17.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) a balloon (d) a magnet
18. 18.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) long (d) round
19. 19.⚖️ 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
20. 20.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
21. 21.🔦 Which of these is transparent? (a) clear glass (b) a steel plate (c) a wooden board (d) frosted glass
22. 22.🧺 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) a clock to check (d) a mirror
23. 23.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
24. 24.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
25. 25.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
26. 26.⚖️ 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 change it (c) we measure it
27. 27.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
28. 28.🔦 Which of these is transparent? (a) your hand (b) clear plastic film (c) a brick (d) oily paper
29. 29.⚖️ 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) True (b) False
30. 30.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
31. 31.⚖️ 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
32. 32.True or false: a book is translucent. (a) True (b) False
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
34. 34.🔦 Which of these is translucent? (a) a steel plate (b) tissue paper (c) clear glass (d) air
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same spot (c) the same stick (d) the time of day
36. 36.True or false: a steel plate is opaque. (a) True (b) False
37. 37.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
38. 38.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) early morning (d) late evening
39. 39.⚖️ 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) the time of day (c) shadow length
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False

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