Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 908 · 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.⚖️ 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
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) two small mirrors (d) an empty juice carton
4. 4.True or false: dark soil reflects light well. (a) False (b) True
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) sticky tape (d) a ruler
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.True or false: still clear water reflects light well. (a) False (b) True
11. 11.True or false: vinegar is needed for the periscope. (a) True (b) False
12. 12.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
13. 13.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) the same mirrors (d) how clear the view is
15. 15.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
16. 16.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a balloon (d) a battery cell
18. 18.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) a dull brick
19. 19.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
20. 20.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
21. 21.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) dark soil (d) a dull brick
22. 22.True or false: aluminium foil reflects light poorly. (a) True (b) False
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
24. 24.True or false: a shiny steel plate reflects light well. (a) True (b) False
25. 25.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) vinegar (d) a pencil
26. 26.True or false: black cloth reflects light well. (a) False (b) True
27. 27.True or false: a balloon is not needed for the periscope. (a) False (b) True
28. 28.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
29. 29.⚖️ 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 carton (b) how clear the view is (c) the angle of the mirrors (d) the same light
30. 30.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a dull brick (d) a shiny steel plate
31. 31.True or false: aluminium foil reflects light well. (a) True (b) False
32. 32.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
33. 33.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) dark soil
37. 37.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) a dull brick (d) a rough wooden board
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
39. 39.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we change it (b) we measure it (c) we keep it the same

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