Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 285 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
5. 5.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) still clear water
6. 6.True or false: a rough wooden board reflects light well. (a) True (b) False
7. 7.True or false: a ruler is needed for the periscope. (a) False (b) True
8. 8.⚖️ 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
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a shiny steel plate (d) aluminium foil
11. 11.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) yeast
15. 15.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) a battery cell (d) yeast
16. 16.⚖️ 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
17. 17.True or false: a pencil is needed for the periscope. (a) True (b) False
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the same carton (c) the angle of the mirrors (d) the same light
19. 19.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
20. 20.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) a mirror
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a magnet (d) sticky tape
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
23. 23.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) still clear water (d) a dull brick
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same light (c) the angle of the mirrors (d) how clear the view is
25. 25.True or false: a shiny steel plate reflects light well. (a) False (b) True
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
27. 27.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
28. 28.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
29. 29.True or false: a magnet is needed for the periscope. (a) True (b) False
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) a ruler
31. 31.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🔮 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
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) two small mirrors (d) turmeric powder
34. 34.⚖️ 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) False (b) True
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
36. 36.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
37. 37.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
40. 40.True or false: two small mirrors is needed for the periscope. (a) False (b) True

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