Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 998 · 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) the ground (b) taller walls (c) only short walls (d) nothing at all
2. 2.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
7. 7.⚖️ 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
8. 8.True or false: yeast is needed for the periscope. (a) True (b) False
9. 9.🛟 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
10. 10.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a balloon (d) two small mirrors
11. 11.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
13. 13.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
14. 14.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
15. 15.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) sticky tape (d) two small mirrors
17. 17.⚖️ 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
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.True or false: a rough wooden board reflects light well. (a) True (b) False
20. 20.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) yeast
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
22. 22.🔭 Which of these reflects light well? (a) a dull brick (b) a shiny steel plate (c) black cloth (d) dark soil
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same carton (c) how clear the view is (d) the same light
24. 24.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) a shiny steel plate (d) still clear water
25. 25.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) black cloth
26. 26.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) aluminium foil (d) still clear water
28. 28.True or false: a rough wooden board reflects light poorly. (a) True (b) False
29. 29.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) still clear water (d) a dull brick
30. 30.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
31. 31.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) a mirror
32. 32.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
33. 33.🧺 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
34. 34.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) dark soil (d) aluminium foil
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
37. 37.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
38. 38.True or false: yeast is not needed for the periscope. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a shiny steel plate (d) a rough wooden board
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True

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