Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 660 · 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) a pencil (b) an empty juice carton (c) sticky tape (d) a balloon
2. 2.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
4. 4.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) sticky tape (d) vinegar
5. 5.True or false: still clear water reflects light poorly. (a) False (b) True
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) two small mirrors (d) a ruler
7. 7.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) sticky tape (d) a ruler
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
10. 10.True or false: a balloon is needed for the periscope. (a) True (b) False
11. 11.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
13. 13.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
14. 14.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a magnet (c) sticky tape (d) a pencil
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
17. 17.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
18. 18.🧺 Which of these is not needed for the periscope? (a) a pencil (b) yeast (c) sticky tape (d) an empty juice carton
19. 19.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) black cloth (d) aluminium foil
20. 20.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a mirror (d) dark soil
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.True or false: a battery cell is needed for the periscope. (a) True (b) False
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) how clear the view is (d) the same carton
24. 24.True or false: a shiny steel plate reflects light well. (a) True (b) False
25. 25.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
26. 26.True or false: a balloon is not needed for the periscope. (a) True (b) False
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) sticky tape (d) a magnet
29. 29.True or false: vinegar is not needed for the periscope. (a) False (b) True
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
32. 32.True or false: vinegar is needed for the periscope. (a) False (b) True
33. 33.⚖️ 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) True (b) False
34. 34.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
36. 36.⚖️ 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 same carton (c) the angle of the mirrors
37. 37.True or false: sticky tape is not needed for the periscope. (a) True (b) False
38. 38.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a dull brick (d) a shiny steel plate
39. 39.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed

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