Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 612 · 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 dull brick reflects light well. (a) False (b) True
2. 2.True or false: a balloon is not needed for the periscope. (a) False (b) True
3. 3.True or false: still clear water reflects light well. (a) False (b) True
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
6. 6.⚖️ 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 mirrors (c) how clear the view is (d) the same light
7. 7.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
8. 8.True or false: a rough wooden board reflects light well. (a) False (b) True
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
11. 11.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a battery cell (d) an empty juice carton
12. 12.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) a rough wooden board
13. 13.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a dull brick (d) a rough wooden board
14. 14.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
15. 15.🧺 Which of these is needed for the periscope? (a) a battery cell (b) two small mirrors (c) turmeric powder (d) a balloon
16. 16.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
17. 17.🛟 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
18. 18.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) dark soil (d) aluminium foil
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) a battery cell
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) sticky tape (d) a ruler
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a pencil (d) yeast
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
23. 23.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) still clear water
24. 24.True or false: yeast is needed for the periscope. (a) True (b) False
25. 25.🔮 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
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a magnet
27. 27.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) a shiny steel plate (d) aluminium foil
28. 28.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) vinegar (d) a battery cell
29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) a rough wooden board
30. 30.⚖️ 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) the angle of the mirrors (c) how clear the view is
31. 31.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) aluminium foil (d) black cloth
32. 32.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) a pencil (d) sticky tape
34. 34.True or false: a balloon is needed for the periscope. (a) False (b) True
35. 35.⚖️ 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 change it (c) we keep it the same
36. 36.⚖️ 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
37. 37.True or false: a dull brick reflects light poorly. (a) False (b) True
38. 38.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
39. 39.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids