Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 250 · 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? True or false: the same mirrors is the one thing we change. (a) True (b) False
2. 2.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
3. 3.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
4. 4.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same light (c) how clear the view is (d) the same carton
6. 6.True or false: yeast is not needed for the periscope. (a) True (b) False
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
9. 9.⚖️ 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
10. 10.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a balloon
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
13. 13.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) vinegar (d) turmeric powder
14. 14.⚖️ 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) False (b) True
15. 15.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) black cloth
16. 16.True or false: vinegar is needed for the periscope. (a) True (b) False
17. 17.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
18. 18.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the same mirrors
19. 19.True or false: yeast is needed for the periscope. (a) True (b) False
20. 20.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
21. 21.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a dull brick (d) a shiny steel plate
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) an empty juice carton (d) a ruler
23. 23.⚖️ 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) False (b) True
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
25. 25.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
26. 26.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) black cloth (d) still clear water
28. 28.🔭 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
29. 29.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
31. 31.True or false: dark soil reflects light well. (a) False (b) True
32. 32.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
33. 33.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.True or false: aluminium foil reflects light poorly. (a) False (b) True
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 change it (b) we measure it (c) we keep it the same
36. 36.🔭 How many times does light bounce off a mirror in a simple periscope?
37. 37.⚖️ 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 change it (b) we measure it (c) we keep it the same
38. 38.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
39. 39.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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