Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 404 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) an empty juice carton (d) vinegar
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) sticky tape (d) two small mirrors
6. 6.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
7. 7.🧺 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 ruler
8. 8.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
9. 9.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) still clear water (d) a dull brick
10. 10.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a pencil (c) a ruler (d) two small mirrors
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
13. 13.True or false: vinegar is needed for the periscope. (a) True (b) False
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a pencil (d) sticky tape
15. 15.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
18. 18.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a battery cell (c) two small mirrors (d) an empty juice carton
19. 19.⚖️ 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
20. 20.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
21. 21.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
22. 22.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) a ruler (d) a balloon
23. 23.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) an empty juice carton (d) a battery cell
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) a pencil (d) an empty juice carton
26. 26.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
27. 27.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) dark soil (d) aluminium foil
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 measure it (b) we change it (c) we keep it the same
30. 30.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
31. 31.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a balloon
32. 32.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
33. 33.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) a shiny steel plate
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) an empty juice carton (d) a magnet
35. 35.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a magnet (d) two small mirrors
37. 37.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) black cloth (d) a rough wooden board
38. 38.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
39. 39.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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