Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 719 · 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 balloon is needed for the periscope. (a) False (b) True
2. 2.⚖️ 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) how clear the view is (c) the same carton (d) the angle of the mirrors
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
5. 5.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
6. 6.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) dark soil (d) a shiny steel plate
8. 8.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a shiny steel plate (d) black cloth
9. 9.⚖️ 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) False (b) True
10. 10.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a mirror (d) black cloth
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) an empty juice carton (d) two small mirrors
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) still clear water
14. 14.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a battery cell (d) two small mirrors
16. 16.⚖️ 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 object we look at (c) how clear the view is (d) the same carton
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) vinegar (d) an empty juice carton
18. 18.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
19. 19.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
22. 22.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
23. 23.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a ruler (d) a battery cell
24. 24.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil
25. 25.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) still clear water (d) black cloth
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 Which of these reflects light well? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
28. 28.True or false: a ruler is not needed for the periscope. (a) True (b) False
29. 29.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
31. 31.⚖️ 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 measure it (b) we keep it the same (c) we change it
32. 32.⚖️ 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) False (b) True
33. 33.True or false: still clear water reflects light well. (a) True (b) False
34. 34.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a shiny steel plate (d) a rough wooden board
36. 36.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) aluminium foil (d) still clear water
37. 37.True or false: dark soil reflects light well. (a) False (b) True
38. 38.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
40. 40.⚖️ 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

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