Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 177 · 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) sticky tape (b) an empty juice carton (c) a pencil (d) turmeric powder
2. 2.True or false: black cloth reflects light poorly. (a) True (b) False
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a battery cell
4. 4.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) still clear water (d) a dull brick
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) a ruler (d) sticky tape
7. 7.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) a rough wooden board (d) dark soil
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) yeast (d) two small mirrors
9. 9.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) to make it heavy (d) so it can float
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
11. 11.True or false: aluminium foil reflects light poorly. (a) False (b) True
12. 12.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a balloon
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
15. 15.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
17. 17.True or false: a dull brick reflects light well. (a) True (b) False
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🛟 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
20. 20.⚖️ 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
21. 21.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
22. 22.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
23. 23.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
24. 24.True or false: sticky tape is needed for the periscope. (a) True (b) False
25. 25.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a ruler (d) vinegar
26. 26.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) turmeric powder (d) an empty juice carton
27. 27.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
28. 28.⚖️ 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
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: black cloth reflects light well. (a) True (b) False
31. 31.⚖️ 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 change it (c) we measure it
32. 32.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) a battery cell (d) a pencil
33. 33.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
35. 35.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
36. 36.⚖️ 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
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same light (d) the object we look at
38. 38.🔭 How many times does light bounce off a mirror in a simple periscope?
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a battery cell (d) two small mirrors

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