Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 193 · 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.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
2. 2.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
3. 3.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
4. 4.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) a dull brick (d) dark soil
5. 5.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.True or false: turmeric powder is needed for the periscope. (a) False (b) True
7. 7.⚖️ 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) False (b) True
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
10. 10.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) two small mirrors (d) a ruler
12. 12.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) a battery cell
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) an empty juice carton (d) a pencil
16. 16.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
17. 17.True or false: aluminium foil reflects light poorly. (a) False (b) True
18. 18.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) aluminium foil (d) a shiny steel plate
24. 24.🔭 Which of these reflects light well? (a) a mirror (b) a dull brick (c) a rough wooden board (d) black cloth
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
27. 27.True or false: yeast is needed for the periscope. (a) False (b) True
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) an empty juice carton (d) two small mirrors
29. 29.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a mirror (d) dark soil
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) still clear water
31. 31.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
32. 32.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
33. 33.True or false: a pencil is needed for the periscope. (a) False (b) True
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) a dull brick (d) black cloth
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a ruler (d) a balloon
39. 39.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) still clear water

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