Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 174 · 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.True or false: aluminium foil reflects light well. (a) False (b) True
2. 2.⚖️ 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) False (b) True
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) sticky tape
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) a ruler (d) sticky tape
5. 5.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
7. 7.⚖️ 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 light (b) the angle of the mirrors (c) the same carton (d) the object we look at
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) a rough wooden board
9. 9.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) a battery cell (d) turmeric powder
10. 10.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) black cloth (d) a rough wooden board
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) yeast (d) an empty juice carton
14. 14.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
16. 16.⚖️ 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
17. 17.True or false: still clear water reflects light well. (a) False (b) True
18. 18.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) dark soil (d) a dull brick
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a ruler (d) two small mirrors
21. 21.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
22. 22.True or false: a rough wooden board reflects light poorly. (a) True (b) False
23. 23.True or false: a magnet is not needed for the periscope. (a) False (b) True
24. 24.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.True or false: sticky tape is not needed for the periscope. (a) True (b) False
26. 26.True or false: dark soil reflects light poorly. (a) True (b) False
27. 27.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a battery cell (d) an empty juice carton
28. 28.⚖️ 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 measure it (c) we change it
29. 29.🔭 Which of these reflects light poorly? (a) still clear water (b) dark soil (c) a shiny steel plate (d) aluminium foil
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
33. 33.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a rough wooden board (d) aluminium foil
34. 34.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.⚖️ 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
36. 36.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
37. 37.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
38. 38.True or false: a pencil is needed for the periscope. (a) True (b) False
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker

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