Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 807 · 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? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
2. 2.🛟 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
3. 3.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a mirror (d) still clear water
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) a pencil (d) a ruler
5. 5.True or false: black cloth reflects light well. (a) False (b) True
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) sticky tape (d) two small mirrors
7. 7.True or false: a battery cell is not needed for the periscope. (a) False (b) True
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
9. 9.True or false: a rough wooden board reflects light well. (a) True (b) False
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
12. 12.⚖️ 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
13. 13.⚖️ 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
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
15. 15.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
17. 17.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
20. 20.True or false: yeast is needed for the periscope. (a) True (b) False
21. 21.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
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 light (b) the same carton (c) how clear the view is (d) the object we look at
23. 23.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
24. 24.⚖️ 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) how clear the view is (c) the angle of the mirrors
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
26. 26.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
27. 27.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
28. 28.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) aluminium foil (d) a shiny steel plate
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🔮 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
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) a balloon
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) vinegar (d) two small mirrors
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a ruler (d) yeast
35. 35.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) yeast (c) an empty juice carton (d) two small mirrors
36. 36.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a shiny steel plate (d) a mirror
37. 37.🔭 How many times does light bounce off a mirror in a simple periscope?
38. 38.True or false: a rough wooden board reflects light poorly. (a) False (b) True
39. 39.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a magnet

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