Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 442 · 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 mirror (b) a shiny steel plate (c) dark soil (d) still clear water
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) yeast (d) a pencil
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
5. 5.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) two small mirrors (d) a magnet
6. 6.True or false: yeast is needed for the periscope. (a) False (b) True
7. 7.True or false: aluminium foil reflects light well. (a) False (b) True
8. 8.⚖️ 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
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a balloon (d) a pencil
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) still clear water (d) aluminium foil
13. 13.⚖️ 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) False (b) True
14. 14.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) turmeric powder
19. 19.True or false: a balloon is needed for the periscope. (a) True (b) False
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) a ruler
21. 21.⚖️ 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 angle of the mirrors (d) the same mirrors
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.True or false: turmeric powder is needed for the periscope. (a) False (b) True
25. 25.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
26. 26.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
29. 29.⚖️ 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 keep it the same (c) we measure it
30. 30.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) yeast (d) sticky tape
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) a pencil
32. 32.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
33. 33.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) the same carton (d) how clear the view is
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) a rough wooden board
36. 36.True or false: a magnet is not needed for the periscope. (a) True (b) False
37. 37.🔭 How many mirrors does a simple periscope use?
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
39. 39.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) an empty juice carton (d) two small mirrors
40. 40.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed

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