Shadow and Sundial Experiment Worksheet
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.
NameDateTime takenScore ___ / 40
- 1.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) does not work well (d) runs faster
- 2.🔍 Which is the odd one out? (a) a book (b) clean water (c) clear glass (d) clear plastic film
- 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we change it (c) we keep it the same
- 4.🔍 Which is the odd one out? (a) a steel plate (b) frosted glass (c) a wooden board (d) a book
- 5.⚖️ 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
- 6.True or false: tissue paper is translucent. (a) True (b) False
- 7.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
- 8.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) mark with chalk (d) sit in the shade
- 9.🧺 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 magnet (d) a clock to check
- 10.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
- 11.⚖️ 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) shadow length (d) the same stick
- 12.🔦 Which of these is transparent? (a) a brick (b) your hand (c) butter paper (d) air
- 13.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) clean water (d) oily paper
- 14.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
- 15.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
- 16.🌞 When is a stick’s shadow the shortest? (a) late evening (b) early morning (c) around noon (d) at night
- 17.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
- 18.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
- 19.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
- 20.True or false: a book is transparent. (a) True (b) False
- 21.⚖️ 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
- 22.🧺 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
- 23.⚖️ 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
- 24.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) an object blocks light (d) the ground is dark
- 25.🔍 Which is the odd one out? (a) a steel plate (b) your hand (c) a brick (d) air
- 26.⚖️ 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) False (b) True
- 27.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) turmeric powder (c) a sunny open place (d) yeast
- 28.⚖️ 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 same spot (c) the time of day
- 29.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
- 30.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the same stick (c) the time of day (d) the stick kept upright
- 31.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
- 32.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
- 33.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
- 34.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) False (b) True
- 35.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
- 36.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
- 37.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
- 38.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a balloon
- 39.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) turmeric powder
- 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
Answer key
- does not work well
- a book
- we keep it the same
- frosted glass
- True
- True
- not needed
- look straight at the Sun
- a magnet
- translucent
- shadow length
- air
- clean water
- needed
- we measure it
- around noon
- long
- not needed
- opaque
- False
- we keep it the same
- yeast
- we change it
- an object blocks light
- air
- True
- a sunny open place
- the same spot
- True
- the time of day
- not needed
- True
- needed
- False
- needed
- not needed
- False
- a balloon
- turmeric powder
- False
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