Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 356 · 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) an empty juice carton (b) a ruler (c) a pencil (d) a battery cell
2. 2.⚖️ 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
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔭 Which of these reflects light poorly? (a) aluminium foil (b) dark soil (c) still clear water (d) a shiny steel plate
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
6. 6.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a shiny steel plate (d) a dull brick
7. 7.True or false: a pencil is not needed for the periscope. (a) True (b) False
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
9. 9.True or false: black cloth reflects light well. (a) True (b) False
10. 10.⚖️ 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) how clear the view is (c) the same mirrors (d) the same light
11. 11.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a mirror
13. 13.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) turmeric powder (d) a pencil
15. 15.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) dark soil
16. 16.⚖️ 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) True (b) False
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) yeast
18. 18.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
19. 19.True or false: aluminium foil reflects light well. (a) False (b) True
20. 20.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) a mirror
22. 22.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) a pencil (d) a battery cell
24. 24.🔭 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
25. 25.🔮 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
26. 26.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.True or false: still clear water reflects light poorly. (a) True (b) False
30. 30.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
31. 31.True or false: a balloon is needed for the periscope. (a) True (b) False
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.True or false: a mirror reflects light well. (a) True (b) False
35. 35.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) a battery cell
38. 38.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) black cloth (d) a dull brick
39. 39.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
40. 40.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds

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