Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 321 · 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 of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) an empty juice carton (d) vinegar
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
5. 5.⚖️ 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 change it (b) we keep it the same (c) we measure it
6. 6.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) a ruler (d) two small mirrors
7. 7.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
8. 8.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) aluminium foil (d) still clear water
9. 9.True or false: a pencil is not needed for the periscope. (a) False (b) True
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
11. 11.True or false: yeast is needed for the periscope. (a) True (b) False
12. 12.True or false: a balloon is not needed for the periscope. (a) True (b) False
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a magnet (d) an empty juice carton
14. 14.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) dark soil (d) black cloth
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is (d) the same mirrors
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) aluminium foil (d) dark soil
19. 19.True or false: aluminium foil reflects light poorly. (a) False (b) True
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) how clear the view is (c) the same mirrors (d) the object we look at
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) a ruler (d) sticky tape
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
24. 24.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
27. 27.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) a ruler (d) a pencil
28. 28.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) vinegar (d) sticky tape
29. 29.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
32. 32.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) two small mirrors (d) yeast
33. 33.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
34. 34.True or false: a shiny steel plate reflects light well. (a) False (b) True
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) an empty juice carton (d) a pencil
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) a ruler (d) an empty juice carton
37. 37.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
38. 38.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a mirror (d) a shiny steel plate
39. 39.⚖️ 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 keep it the same (c) we measure it
40. 40.True or false: a shiny steel plate reflects light poorly. (a) False (b) True

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