Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 875 · 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) black cloth (b) aluminium foil (c) a mirror (d) still clear water
2. 2.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🛟 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
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
5. 5.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) a rough wooden board (d) dark soil
6. 6.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) black cloth (d) a rough wooden board
7. 7.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
8. 8.⚖️ 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 change it (b) we measure it (c) we keep it the same
9. 9.⚖️ 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) the same carton (c) the object we look at (d) the same mirrors
10. 10.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) yeast (d) a pencil
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the object we look at
13. 13.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the same carton (d) the object we look at
15. 15.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) a ruler (d) two small mirrors
18. 18.⚖️ 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
19. 19.⚖️ 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) True (b) False
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a battery cell (d) sticky tape
21. 21.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) a pencil (d) an empty juice carton
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
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 keep it the same (b) we change it (c) we measure it
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
25. 25.🔭 Which of these reflects light poorly? (a) dark soil (b) a shiny steel plate (c) still clear water (d) a mirror
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) two small mirrors (d) an empty juice carton
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a magnet (d) an empty juice carton
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) a balloon
29. 29.True or false: a magnet is needed for the periscope. (a) False (b) True
30. 30.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a dull brick (d) black cloth
32. 32.🔭 How many mirrors does a simple periscope use?
33. 33.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a dull brick (d) a shiny steel plate
34. 34.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) sticky tape (d) an empty juice carton
35. 35.True or false: a shiny steel plate reflects light well. (a) True (b) False
36. 36.⚖️ 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
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
38. 38.True or false: yeast is not needed for the periscope. (a) True (b) False
39. 39.True or false: a rough wooden board reflects light well. (a) True (b) False
40. 40.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running

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