Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 526 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
2. 2.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
5. 5.🔭 Which of these reflects light well? (a) aluminium foil (b) dark soil (c) black cloth (d) a dull brick
6. 6.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a rough wooden board (d) black cloth
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 90 degrees (d) 10 degrees
10. 10.True or false: a balloon is not needed for the periscope. (a) False (b) True
11. 11.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) vinegar
13. 13.⚖️ 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
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.True or false: aluminium foil reflects light well. (a) True (b) False
16. 16.True or false: a rough wooden board reflects light poorly. (a) True (b) False
17. 17.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a pencil (d) sticky tape
20. 20.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
22. 22.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
23. 23.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) turmeric powder (d) two small mirrors
24. 24.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
25. 25.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
26. 26.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
27. 27.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) a shiny steel plate (d) black cloth
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) sticky tape (d) two small mirrors
30. 30.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) still clear water (d) a rough wooden board
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) turmeric powder (d) an empty juice carton
33. 33.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.True or false: a mirror reflects light well. (a) True (b) False
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a magnet (d) two small mirrors
36. 36.True or false: yeast is not needed for the periscope. (a) True (b) False
37. 37.True or false: a magnet is not needed for the periscope. (a) True (b) False
38. 38.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a pencil (d) vinegar
40. 40.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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