Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 790 · 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? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
3. 3.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) turmeric powder (d) a ruler
4. 4.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
5. 5.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
6. 6.⚖️ 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) False (b) True
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) yeast (d) an empty juice carton
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
12. 12.True or false: black cloth reflects light well. (a) False (b) True
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) vinegar (d) a pencil
14. 14.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) yeast (d) two small mirrors
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) a shiny steel plate
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.True or false: a pencil is needed for the periscope. (a) False (b) True
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) a pencil (d) two small mirrors
20. 20.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
24. 24.⚖️ 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) True (b) False
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
26. 26.True or false: dark soil reflects light poorly. (a) False (b) True
27. 27.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
28. 28.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a ruler (d) a battery cell
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a battery cell
31. 31.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 90 degrees (d) 10 degrees
33. 33.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
36. 36.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a dull brick (d) still clear water
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
38. 38.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) dark soil (d) still clear water
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) yeast

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