Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 79 · 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.🔮 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
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) a balloon
3. 3.True or false: sticky tape is needed for the periscope. (a) True (b) False
4. 4.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a shiny steel plate (d) a mirror
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a shiny steel plate (d) aluminium foil
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
11. 11.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a pilot in a plane (d) a farmer
12. 12.True or false: still clear water reflects light well. (a) True (b) False
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.⚖️ 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
15. 15.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) dark soil (d) still clear water
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) turmeric powder (d) an empty juice carton
17. 17.True or false: a mirror reflects light well. (a) True (b) False
18. 18.⚖️ 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) False (b) True
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
21. 21.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) a dull brick
22. 22.⚖️ 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 angle of the mirrors (c) the object we look at (d) how clear the view is
23. 23.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
24. 24.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
27. 27.🧺 Which of these is needed for the periscope? (a) a pencil (b) turmeric powder (c) a balloon (d) yeast
28. 28.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) black cloth
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a pencil (d) a battery cell
31. 31.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
32. 32.True or false: a pencil is not needed for the periscope. (a) True (b) False
33. 33.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
34. 34.True or false: a dull brick reflects light well. (a) False (b) True
35. 35.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
36. 36.True or false: still clear water reflects light poorly. (a) False (b) True
37. 37.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
38. 38.True or false: a battery cell is not needed for the periscope. (a) False (b) True
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) aluminium foil
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True

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