Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 101 · 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? True or false: the time of day is the one thing we change. (a) False (b) True
2. 2.🔦 Which of these is translucent? (a) a book (b) clear plastic film (c) a brick (d) frosted glass
3. 3.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
4. 4.⚖️ 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 measure it (c) we keep it the same
5. 5.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
6. 6.⚖️ 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) True (b) False
7. 7.🔍 Which is the odd one out? (a) air (b) clean water (c) butter paper (d) clear plastic film
8. 8.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
9. 9.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
11. 11.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) a mirror
13. 13.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) yeast (c) a sunny open place (d) a clock to check
14. 14.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
15. 15.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
16. 16.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) a raincoat (d) nothing on your head
17. 17.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a clock to check (c) a straight stick (d) a sunny open place
18. 18.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) clear glass (b) a brick (c) a wooden board (d) a book
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
21. 21.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
22. 22.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
24. 24.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
25. 25.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) weighing things (d) making rainbows
26. 26.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
27. 27.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
28. 28.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) short (c) round (d) missing
29. 29.True or false: a brick is opaque. (a) True (b) False
30. 30.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
31. 31.🔦 Which of these is opaque? (a) clean water (b) clear glass (c) a wooden board (d) frosted glass
32. 32.🔦 Which of these is translucent? (a) oily paper (b) your hand (c) a steel plate (d) a brick
33. 33.⚖️ 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 time of day (c) the stick kept upright (d) shadow length
34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) chalk to mark shadows (d) a clock to check
35. 35.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
36. 36.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick walks (c) the ground slides (d) the stick grows
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.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) air (d) frosted glass
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a balloon (c) a sunny open place (d) a straight stick
40. 40.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) north (c) east (d) west

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