Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 99 · 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) a pencil (b) a battery cell (c) a magnet (d) turmeric powder
2. 2.True or false: a rough wooden board reflects light well. (a) True (b) False
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a balloon
5. 5.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) a mirror
7. 7.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) black cloth (d) still clear water
8. 8.🔭 Which of these reflects light well? (a) black cloth (b) aluminium foil (c) dark soil (d) a dull brick
9. 9.⚖️ 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
10. 10.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
11. 11.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a dull brick
12. 12.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
14. 14.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
15. 15.True or false: a rough wooden board reflects light poorly. (a) False (b) True
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) how clear the view is (c) the same mirrors (d) the angle of the mirrors
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
18. 18.🔮 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
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
20. 20.⚖️ 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 measure it (c) we keep it the same
21. 21.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) yeast (d) a magnet
22. 22.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) yeast
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
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.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
27. 27.True or false: vinegar is needed for the periscope. (a) True (b) False
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
30. 30.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) black cloth
32. 32.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) dark soil (d) a dull brick
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) a mirror (d) a shiny steel plate
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) vinegar
35. 35.⚖️ 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) False (b) True
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
38. 38.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a pencil (c) two small mirrors (d) sticky tape
39. 39.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
40. 40.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed

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