Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 272 · 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 angle of the mirrors is kept the same. (a) False (b) True
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.True or false: a shiny steel plate reflects light well. (a) False (b) True
5. 5.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
7. 7.True or false: aluminium foil reflects light poorly. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) black cloth
9. 9.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a mirror
10. 10.True or false: dark soil reflects light poorly. (a) False (b) True
11. 11.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a battery cell (c) a ruler (d) two small mirrors
12. 12.⚖️ 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) True (b) False
13. 13.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a rough wooden board (d) a shiny steel plate
15. 15.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
16. 16.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) two small mirrors (d) a magnet
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
20. 20.True or false: a pencil is needed for the periscope. (a) False (b) True
21. 21.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) a shiny steel plate
22. 22.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
23. 23.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
25. 25.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) still clear water
26. 26.True or false: a magnet is needed for the periscope. (a) False (b) True
27. 27.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
28. 28.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) dark soil (d) a rough wooden board
29. 29.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the object we look at
30. 30.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) an empty juice carton (d) a pencil
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) a ruler (d) an empty juice carton
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
33. 33.True or false: a dull brick reflects light well. (a) True (b) False
34. 34.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
35. 35.⚖️ 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 measure it (b) we keep it the same (c) we change it
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) vinegar (c) an empty juice carton (d) two small mirrors
38. 38.🧺 Which of these is not needed for the periscope? (a) a ruler (b) turmeric powder (c) sticky tape (d) an empty juice carton
39. 39.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
40. 40.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) black cloth (d) aluminium foil

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