Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 255 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) an empty juice carton (d) a battery cell
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) sticky tape (d) a ruler
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
4. 4.True or false: turmeric powder is needed for the periscope. (a) False (b) True
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) vinegar (d) an empty juice carton
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
8. 8.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) a magnet (d) turmeric powder
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
11. 11.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a balloon
12. 12.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) two small mirrors (c) an empty juice carton (d) a pencil
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
14. 14.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
15. 15.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
16. 16.True or false: yeast is needed for the periscope. (a) True (b) False
17. 17.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
18. 18.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a rough wooden board (c) a mirror (d) a shiny steel plate
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a rough wooden board
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
22. 22.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
23. 23.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.True or false: two small mirrors is needed for the periscope. (a) True (b) False
27. 27.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same light (b) the same carton (c) the angle of the mirrors (d) how clear the view is
31. 31.True or false: dark soil reflects light poorly. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) dark soil (d) aluminium foil
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) two small mirrors (c) an empty juice carton (d) a pencil
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) turmeric powder (d) vinegar
36. 36.True or false: sticky tape is not needed for the periscope. (a) False (b) True
37. 37.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
38. 38.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) dark soil (d) a shiny steel plate
39. 39.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) black cloth

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