Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 894 · 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) two small mirrors (c) vinegar (d) an empty juice carton
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
5. 5.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a magnet (d) an empty juice carton
6. 6.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) a ruler (d) two small mirrors
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) yeast (d) a pencil
8. 8.True or false: still clear water reflects light poorly. (a) False (b) True
9. 9.True or false: vinegar is needed for the periscope. (a) True (b) False
10. 10.⚖️ 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 light (d) the object we look at
11. 11.🔭 How many mirrors does a simple periscope use?
12. 12.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
14. 14.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
15. 15.🛟 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
16. 16.⚖️ 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
17. 17.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a balloon (d) an empty juice carton
19. 19.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) a ruler (d) sticky tape
21. 21.⚖️ 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 angle of the mirrors (c) the object we look at (d) the same mirrors
22. 22.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) an empty juice carton (d) a battery cell
23. 23.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) turmeric powder (d) a magnet
24. 24.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a rough wooden board (d) black cloth
25. 25.⚖️ 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 measure it (c) we change it
26. 26.⚖️ 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
27. 27.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
28. 28.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) a mirror (d) aluminium foil
29. 29.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.True or false: dark soil reflects light well. (a) True (b) False
31. 31.🔭 How many times does light bounce off a mirror in a simple periscope?
32. 32.⚖️ 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) True (b) False
33. 33.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) still clear water
34. 34.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
35. 35.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
36. 36.⚖️ 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) True (b) False
37. 37.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.True or false: black cloth reflects light well. (a) True (b) False
40. 40.True or false: dark soil reflects light poorly. (a) True (b) False

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