Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 714 · 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 not needed for the periscope? (a) a ruler (b) a pencil (c) a battery cell (d) sticky tape
2. 2.True or false: still clear water reflects light poorly. (a) True (b) False
3. 3.True or false: black cloth reflects light well. (a) False (b) True
4. 4.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
6. 6.⚖️ 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
7. 7.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a ruler (d) a battery cell
10. 10.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a rough wooden board (d) still clear water
11. 11.True or false: sticky tape is needed for the periscope. (a) True (b) False
12. 12.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
13. 13.True or false: dark soil reflects light poorly. (a) True (b) False
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
15. 15.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil
16. 16.🔭 How many mirrors does a simple periscope use?
17. 17.True or false: a dull brick reflects light poorly. (a) True (b) False
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same light (d) the same carton
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a battery cell
20. 20.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) dark soil
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
22. 22.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) still clear water
23. 23.True or false: dark soil reflects light well. (a) True (b) False
24. 24.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
25. 25.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
27. 27.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) black cloth (d) aluminium foil
29. 29.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
30. 30.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) two small mirrors (d) turmeric powder
31. 31.🔭 How many times does light bounce off a mirror in a simple periscope?
32. 32.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
34. 34.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same light (c) the angle of the mirrors (d) how clear the view is
36. 36.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
37. 37.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) a pencil (d) an empty juice carton
39. 39.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
40. 40.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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