Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 542 · 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 is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) aluminium foil
2. 2.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
3. 3.🧺 Which of these is needed for the periscope? (a) yeast (b) a ruler (c) turmeric powder (d) a balloon
4. 4.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
6. 6.True or false: a ruler is not needed for the periscope. (a) True (b) False
7. 7.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
8. 8.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) aluminium foil
9. 9.True or false: a rough wooden board reflects light poorly. (a) False (b) True
10. 10.True or false: yeast is needed for the periscope. (a) True (b) False
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) turmeric powder (d) sticky tape
12. 12.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) a rough wooden board (d) black cloth
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a rough wooden board
15. 15.True or false: black cloth reflects light well. (a) False (b) True
16. 16.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) two small mirrors (d) vinegar
17. 17.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a rough wooden board (d) aluminium foil
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.True or false: a pencil is needed for the periscope. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a dull brick (d) still clear water
21. 21.🛟 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
22. 22.⚖️ 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
23. 23.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
28. 28.True or false: turmeric powder is needed for the periscope. (a) True (b) False
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) sticky tape (d) an empty juice carton
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.True or false: a pencil is not needed for the periscope. (a) False (b) True
32. 32.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
33. 33.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a dull brick (d) black cloth
34. 34.🧺 Which of these is not needed for the periscope? (a) yeast (b) an empty juice carton (c) sticky tape (d) two small mirrors
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a magnet
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) turmeric powder (c) an empty juice carton (d) a pencil
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
40. 40.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a shiny steel plate (d) a mirror

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