Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 420 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same light (c) how clear the view is (d) the same carton
2. 2.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a ruler (d) two small mirrors
4. 4.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) a shiny steel plate (d) aluminium foil
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) an empty juice carton (c) a pencil (d) a ruler
6. 6.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) two small mirrors (d) a battery cell
7. 7.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) dark soil (d) aluminium foil
9. 9.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a shiny steel plate
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a balloon (d) an empty juice carton
12. 12.True or false: black cloth reflects light poorly. (a) True (b) False
13. 13.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
14. 14.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a magnet (d) an empty juice carton
15. 15.True or false: aluminium foil reflects light well. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a shiny steel plate (d) a mirror
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
18. 18.🔭 Which of these reflects light well? (a) black cloth (b) aluminium foil (c) a rough wooden board (d) a dull brick
19. 19.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) two small mirrors (d) sticky tape
21. 21.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.True or false: a magnet is not needed for the periscope. (a) False (b) True
23. 23.⚖️ 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 mirrors (b) the angle of the mirrors (c) the object we look at (d) the same light
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.🧺 Which of these is needed for the periscope? (a) a balloon (b) an empty juice carton (c) yeast (d) vinegar
26. 26.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.True or false: sticky tape is needed for the periscope. (a) True (b) False
28. 28.⚖️ 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 object we look at (c) the angle of the mirrors
29. 29.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) dark soil (d) aluminium foil
30. 30.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a shiny steel plate (d) black cloth
32. 32.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
33. 33.True or false: a balloon is not needed for the periscope. (a) False (b) True
34. 34.🔮 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
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a battery cell (d) an empty juice carton
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) vinegar
40. 40.⚖️ 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 keep it the same (c) we change it

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