Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 599 · 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.⚖️ 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 angle of the mirrors (c) the same mirrors
2. 2.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
3. 3.True or false: black cloth reflects light well. (a) False (b) True
4. 4.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) two small mirrors (d) turmeric powder
5. 5.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) dark soil (d) aluminium foil
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
9. 9.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
10. 10.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
11. 11.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
12. 12.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) yeast (d) a pencil
13. 13.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
14. 14.True or false: still clear water reflects light poorly. (a) False (b) True
15. 15.⚖️ 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
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
17. 17.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) turmeric powder (d) yeast
18. 18.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a magnet
19. 19.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
21. 21.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
22. 22.⚖️ 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
23. 23.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) vinegar
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
26. 26.🔭 How many times does light bounce off a mirror in a simple periscope?
27. 27.True or false: yeast is needed for the periscope. (a) False (b) True
28. 28.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the object we look at
30. 30.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) yeast (c) a magnet (d) a balloon
31. 31.⚖️ 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 mirrors (c) the angle of the mirrors (d) the same light
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
34. 34.True or false: sticky tape is needed for the periscope. (a) True (b) False
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) two small mirrors (d) a pencil
36. 36.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
37. 37.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) black cloth
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
39. 39.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) black cloth (d) a dull brick
40. 40.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer

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