Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 201 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) two small mirrors (d) a pencil
2. 2.🛟 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
3. 3.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.⚖️ 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 measure it (b) we keep it the same (c) we change it
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
7. 7.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) black cloth (d) a mirror
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.⚖️ 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
11. 11.⚖️ 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 same mirrors (c) the angle of the mirrors (d) how clear the view is
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
13. 13.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
14. 14.⚖️ 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
15. 15.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) black cloth (d) a mirror
16. 16.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) a mirror (d) dark soil
17. 17.⚖️ 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
18. 18.True or false: dark soil reflects light poorly. (a) False (b) True
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
20. 20.🔭 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
21. 21.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
23. 23.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the periscope? (a) a balloon (b) an empty juice carton (c) a magnet (d) a battery cell
26. 26.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) two small mirrors (d) vinegar
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a ruler (d) a pencil
29. 29.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
30. 30.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
31. 31.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
32. 32.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.True or false: still clear water reflects light poorly. (a) False (b) True
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) a magnet (d) sticky tape
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) sticky tape (d) a ruler
37. 37.True or false: a rough wooden board reflects light well. (a) False (b) True
38. 38.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
40. 40.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed

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