Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 199 · 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.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
2. 2.⚖️ 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) True (b) False
3. 3.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a pencil (c) a balloon (d) a magnet
4. 4.True or false: a pencil is needed for the periscope. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a mirror (d) dark soil
6. 6.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
10. 10.⚖️ 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) how clear the view is (c) the same carton (d) the same light
11. 11.⚖️ 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 same light (c) the angle of the mirrors (d) the object we look at
12. 12.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) sticky tape (d) vinegar
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) a battery cell
14. 14.⚖️ 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 change it (c) we measure it
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) turmeric powder (d) two small mirrors
18. 18.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
19. 19.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) a dull brick (d) dark soil
20. 20.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) two small mirrors (c) sticky tape (d) a ruler
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a balloon
25. 25.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a shiny steel plate (d) still clear water
26. 26.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a ruler (d) a balloon
27. 27.True or false: yeast is needed for the periscope. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a rough wooden board (d) a mirror
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) a mirror
32. 32.True or false: still clear water reflects light well. (a) False (b) True
33. 33.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
34. 34.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
35. 35.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a shiny steel plate (d) black cloth
36. 36.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) still clear water (d) a dull brick
37. 37.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
39. 39.True or false: aluminium foil reflects light well. (a) False (b) True
40. 40.True or false: two small mirrors is not needed for the periscope. (a) False (b) True

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