Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 901 · 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 kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors
2. 2.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
6. 6.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) dark soil (d) black cloth
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a magnet (d) a ruler
8. 8.🔭 Which of these reflects light poorly? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a mirror
9. 9.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) dark soil (d) still clear water
12. 12.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) black cloth (d) a dull brick
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a pencil (d) vinegar
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) turmeric powder (d) two small mirrors
15. 15.⚖️ 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
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
17. 17.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a mirror
18. 18.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) an empty juice carton (d) vinegar
19. 19.True or false: a pencil is needed for the periscope. (a) False (b) True
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) two small mirrors (d) an empty juice carton
21. 21.True or false: aluminium foil reflects light well. (a) False (b) True
22. 22.🔭 How many mirrors does a simple periscope use?
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) black cloth (d) a mirror
24. 24.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the periscope? (a) sticky tape (b) vinegar (c) a balloon (d) a magnet
26. 26.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
27. 27.⚖️ 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) False (b) True
28. 28.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.True or false: two small mirrors is needed for the periscope. (a) False (b) True
30. 30.True or false: still clear water reflects light poorly. (a) True (b) False
31. 31.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.⚖️ 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) the same light (c) the same carton (d) the angle of the mirrors
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) black cloth
34. 34.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) aluminium foil
36. 36.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a rough wooden board (d) a mirror
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) a balloon
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
39. 39.⚖️ 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 angle of the mirrors (c) the object we look at
40. 40.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed

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