Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 715 · 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.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a shiny steel plate (d) aluminium foil
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
3. 3.🧺 Which of these is needed for the periscope? (a) a ruler (b) vinegar (c) a balloon (d) a battery cell
4. 4.True or false: yeast is needed for the periscope. (a) False (b) True
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow
7. 7.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.True or false: a dull brick reflects light well. (a) False (b) True
9. 9.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the same carton
11. 11.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) dark soil
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.🧺 Which of these is needed for the periscope? (a) a pencil (b) a battery cell (c) a magnet (d) a balloon
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) a ruler (d) two small mirrors
15. 15.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) a mirror
16. 16.True or false: black cloth reflects light poorly. (a) True (b) False
17. 17.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
18. 18.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a magnet (d) an empty juice carton
19. 19.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
21. 21.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
22. 22.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
23. 23.True or false: a ruler is not needed for the periscope. (a) False (b) True
24. 24.⚖️ 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 light
25. 25.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a balloon
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same carton (c) how clear the view is
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) sticky tape
28. 28.True or false: a balloon is needed for the periscope. (a) False (b) True
29. 29.🧺 Which of these is needed for the periscope? (a) a battery cell (b) two small mirrors (c) yeast (d) turmeric powder
30. 30.⚖️ 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
31. 31.True or false: a dull brick reflects light poorly. (a) True (b) False
32. 32.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.True or false: still clear water reflects light poorly. (a) True (b) False
36. 36.🧺 Which of these is needed for the periscope? (a) sticky tape (b) vinegar (c) yeast (d) turmeric powder
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same mirrors (c) how clear the view is
38. 38.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) black cloth
39. 39.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
40. 40.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) turmeric powder (d) a magnet

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