Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 776 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) vinegar (d) a ruler
2. 2.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) two small mirrors (d) a magnet
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the angle of the mirrors (d) the same light
7. 7.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a ruler (d) an empty juice carton
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🧺 Which of these is not needed for the periscope? (a) a ruler (b) yeast (c) sticky tape (d) two small mirrors
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) an empty juice carton (d) sticky tape
13. 13.True or false: a rough wooden board reflects light poorly. (a) True (b) False
14. 14.⚖️ 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 carton (c) the angle of the mirrors (d) the same mirrors
15. 15.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a mirror (d) a dull brick
16. 16.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) dark soil (d) a rough wooden board
17. 17.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a pencil (d) turmeric powder
18. 18.⚖️ 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
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
20. 20.⚖️ 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
21. 21.True or false: a balloon is not needed for the periscope. (a) False (b) True
22. 22.🔮 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
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) turmeric powder
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a dull brick (d) a shiny steel plate
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) a magnet
29. 29.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) dark soil (d) aluminium foil
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.⚖️ 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
32. 32.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
33. 33.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a farmer (d) a submarine crew
34. 34.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
35. 35.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a ruler
37. 37.True or false: a magnet is needed for the periscope. (a) True (b) False
38. 38.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a shiny steel plate (d) black cloth
39. 39.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) black cloth (d) a shiny steel plate
40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

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