Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 283 · 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 mirror reflects light poorly. (a) False (b) True
2. 2.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.True or false: a rough wooden board reflects light well. (a) True (b) False
4. 4.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) aluminium foil (d) dark soil
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) turmeric powder (d) a ruler
8. 8.True or false: a magnet is needed for the periscope. (a) False (b) True
9. 9.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
12. 12.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
13. 13.⚖️ 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) False (b) True
14. 14.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) a battery cell (d) turmeric powder
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a pencil (d) sticky tape
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a magnet (d) a pencil
17. 17.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) still clear water (d) a dull brick
18. 18.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) still clear water (d) aluminium foil
19. 19.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) still clear water (d) a dull brick
20. 20.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it looks shiny (d) so it can float
21. 21.True or false: sticky tape is needed for the periscope. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) dark soil (d) a shiny steel plate
23. 23.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
24. 24.⚖️ 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
25. 25.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 90 degrees (d) 180 degrees
27. 27.🛟 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
28. 28.True or false: a balloon is needed for the periscope. (a) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a ruler (d) two small mirrors
30. 30.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
31. 31.⚖️ 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) how clear the view is (c) the angle of the mirrors
32. 32.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
34. 34.⚖️ 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) the object we look at (c) the same light (d) how clear the view is
35. 35.⚖️ 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
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
37. 37.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
38. 38.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) sticky tape (d) turmeric powder
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) black cloth

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