Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 468 · 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.True or false: a balloon is not needed for the periscope. (a) True (b) False
2. 2.⚖️ 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
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
5. 5.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
6. 6.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
7. 7.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) still clear water (d) dark soil
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a ruler (d) an empty juice carton
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.True or false: turmeric powder is needed for the periscope. (a) False (b) True
11. 11.True or false: vinegar is not needed for the periscope. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
13. 13.🧺 Which of these is needed for the periscope? (a) a battery cell (b) two small mirrors (c) turmeric powder (d) yeast
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
15. 15.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) a shiny steel plate (d) aluminium foil
17. 17.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
18. 18.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) turmeric powder (d) an empty juice carton
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) how clear the view is (c) the same light (d) the same mirrors
21. 21.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
22. 22.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
23. 23.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.True or false: still clear water reflects light well. (a) False (b) True
27. 27.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
28. 28.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a pencil (d) a balloon
29. 29.True or false: a dull brick reflects light well. (a) False (b) True
30. 30.True or false: a ruler is not needed for the periscope. (a) True (b) False
31. 31.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) turmeric powder (c) an empty juice carton (d) a pencil
32. 32.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) turmeric powder
35. 35.True or false: a ruler is needed for the periscope. (a) True (b) False
36. 36.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
37. 37.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) still clear water (d) black cloth
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a magnet
39. 39.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a magnet (d) an empty juice carton
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors

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