Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 611 · 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 the one thing we change? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors (d) the object we look at
2. 2.True or false: vinegar is needed for the periscope. (a) True (b) False
3. 3.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
4. 4.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
7. 7.⚖️ 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) False (b) True
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
9. 9.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
10. 10.🔭 Which of these reflects light poorly? (a) black cloth (b) still clear water (c) a shiny steel plate (d) aluminium foil
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a pencil (d) a ruler
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) a mirror
14. 14.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
15. 15.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
16. 16.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) a battery cell
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) a rough wooden board (d) a dull brick
21. 21.True or false: a rough wooden board reflects light poorly. (a) True (b) False
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
24. 24.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) black cloth (d) dark soil
25. 25.True or false: black cloth reflects light well. (a) False (b) True
26. 26.True or false: still clear water reflects light poorly. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) a rough wooden board
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
30. 30.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
32. 32.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
33. 33.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
34. 34.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a battery cell (c) vinegar (d) a balloon
35. 35.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) dark soil
36. 36.True or false: a balloon is not needed for the periscope. (a) False (b) True
37. 37.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
38. 38.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) a rough wooden board (d) dark soil
40. 40.🔭 How many mirrors does a simple periscope use?

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