Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 635 · 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.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a pencil (d) a battery cell
2. 2.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
3. 3.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) a magnet (d) vinegar
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.⚖️ 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) how clear the view is (c) the same carton (d) the object we look at
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 carton (b) the angle of the mirrors (c) the same light (d) the same mirrors
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) two small mirrors (d) a pencil
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) sticky tape (d) a ruler
11. 11.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) black cloth
12. 12.⚖️ 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
13. 13.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
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 same carton
15. 15.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
16. 16.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a pilot in a plane (d) a farmer
17. 17.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a ruler (d) yeast
18. 18.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
20. 20.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors
22. 22.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) two small mirrors (d) sticky tape
23. 23.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) two small mirrors (d) an empty juice carton
24. 24.⚖️ 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) the object we look at (c) how clear the view is
25. 25.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
28. 28.⚖️ 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
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
30. 30.True or false: still clear water reflects light poorly. (a) False (b) True
31. 31.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil
33. 33.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
34. 34.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) sticky tape (d) yeast
35. 35.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
37. 37.True or false: a rough wooden board reflects light well. (a) True (b) False
38. 38.True or false: turmeric powder is needed for the periscope. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) black cloth (d) a rough wooden board
40. 40.⚖️ 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

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