Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 474 · 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.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) hear far sounds (d) see over a wall
2. 2.True or false: a magnet is needed for the periscope. (a) True (b) False
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) two small mirrors (d) sticky tape
4. 4.True or false: turmeric powder is needed for the periscope. (a) True (b) False
5. 5.True or false: a balloon is not needed for the periscope. (a) True (b) False
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🔭 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
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) how clear the view is (d) the angle of the mirrors
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
11. 11.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
12. 12.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a balloon (d) sticky tape
14. 14.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) aluminium foil (d) dark soil
15. 15.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
16. 16.True or false: black cloth reflects light poorly. (a) False (b) True
17. 17.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) yeast (d) a balloon
18. 18.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) black cloth (d) a shiny steel plate
19. 19.True or false: a dull brick reflects light well. (a) False (b) True
20. 20.🧺 Which of these is needed for the periscope? (a) a pencil (b) turmeric powder (c) yeast (d) a balloon
21. 21.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) turmeric powder (c) a ruler (d) two small mirrors
22. 22.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
24. 24.🧺 Which of these is not needed for the periscope? (a) yeast (b) an empty juice carton (c) a pencil (d) a ruler
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) dark soil (d) a dull brick
28. 28.True or false: a pencil is not needed for the periscope. (a) False (b) True
29. 29.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) an empty juice carton (d) a pencil
31. 31.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) a dull brick
33. 33.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) dark soil (d) a mirror
34. 34.⚖️ 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
35. 35.True or false: black cloth reflects light well. (a) True (b) False
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same carton (c) the angle of the mirrors
37. 37.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.True or false: aluminium foil reflects light poorly. (a) False (b) True
40. 40.🔮 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

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