Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 513 · 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.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
2. 2.True or false: a rough wooden board reflects light poorly. (a) False (b) True
3. 3.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) vinegar (d) a pencil
4. 4.⚖️ 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
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
6. 6.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
7. 7.True or false: vinegar is not needed for the periscope. (a) True (b) False
8. 8.True or false: a ruler is not needed for the periscope. (a) True (b) False
9. 9.⚖️ 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
10. 10.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
11. 11.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors
13. 13.True or false: yeast is needed for the periscope. (a) False (b) True
14. 14.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) an empty juice carton (d) a battery cell
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a battery cell (d) sticky tape
17. 17.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) aluminium foil (d) still clear water
18. 18.True or false: vinegar is needed for the periscope. (a) True (b) False
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a balloon
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is
21. 21.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a mirror (d) still clear water
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a magnet (d) a ruler
24. 24.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) sticky tape (d) a pencil
26. 26.True or false: a dull brick reflects light poorly. (a) False (b) True
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a pencil (d) an empty juice carton
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a pencil (d) vinegar
31. 31.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a battery cell (d) a ruler
32. 32.⚖️ 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 change it (b) we measure it (c) we keep it the same
33. 33.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it can float (d) so it looks shiny
34. 34.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.True or false: a balloon is needed for the periscope. (a) True (b) False
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
37. 37.True or false: still clear water reflects light well. (a) True (b) False
38. 38.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
40. 40.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark

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