Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 381 · 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) a magnet (c) two small mirrors (d) a ruler
2. 2.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
3. 3.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) black cloth
4. 4.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
5. 5.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
9. 9.True or false: a shiny steel plate reflects light well. (a) True (b) False
10. 10.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) vinegar
11. 11.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
12. 12.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a ruler (c) two small mirrors (d) sticky tape
13. 13.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) vinegar (d) a ruler
14. 14.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
16. 16.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a magnet
17. 17.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) two small mirrors (d) a balloon
19. 19.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) black cloth (d) a rough wooden board
20. 20.True or false: a rough wooden board reflects light well. (a) False (b) True
21. 21.🛟 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
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) an empty juice carton (d) two small mirrors
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
25. 25.⚖️ 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 object we look at
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a battery cell
27. 27.True or false: a dull brick reflects light poorly. (a) True (b) False
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) vinegar
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
30. 30.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
31. 31.⚖️ 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 object we look at (c) the same mirrors (d) how clear the view is
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
33. 33.True or false: yeast is needed for the periscope. (a) False (b) True
34. 34.⚖️ 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) True (b) False
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.⚖️ 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
37. 37.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
38. 38.True or false: a magnet is needed for the periscope. (a) True (b) False
39. 39.True or false: still clear water reflects light poorly. (a) True (b) False
40. 40.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed

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