Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 749 · 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) the angle of the mirrors (b) the same carton (c) how clear the view is
2. 2.True or false: a dull brick reflects light poorly. (a) False (b) True
3. 3.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a battery cell (d) sticky tape
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a pencil (d) a ruler
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) vinegar
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) a dull brick
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) a ruler (d) sticky tape
10. 10.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a ruler (d) turmeric powder
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
13. 13.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) yeast (d) vinegar
14. 14.🔭 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
15. 15.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same carton (c) the same light (d) how clear the view is
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
19. 19.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) a dull brick
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
22. 22.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
23. 23.⚖️ 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 change it (c) we measure it
24. 24.True or false: yeast is needed for the periscope. (a) False (b) True
25. 25.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) dark soil (d) a dull brick
27. 27.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
28. 28.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
29. 29.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
30. 30.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) a balloon
31. 31.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
32. 32.⚖️ 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
33. 33.True or false: a pencil is needed for the periscope. (a) False (b) True
34. 34.⚖️ 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
35. 35.True or false: a shiny steel plate reflects light well. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) dark soil
37. 37.🧺 Which of these is needed for the periscope? (a) a pencil (b) yeast (c) vinegar (d) turmeric powder
38. 38.⚖️ 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
39. 39.True or false: still clear water reflects light well. (a) True (b) False
40. 40.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) dark soil (d) a rough wooden board

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