Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 364 · 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.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
3. 3.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) black cloth (d) a dull brick
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
5. 5.⚖️ 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
6. 6.True or false: a balloon is needed for the periscope. (a) False (b) True
7. 7.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) turmeric powder (d) two small mirrors
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the same light (c) the angle of the mirrors (d) the object we look at
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) yeast
11. 11.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
12. 12.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
13. 13.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) still clear water (d) a rough wooden board
15. 15.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) a pencil (d) two small mirrors
18. 18.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is (d) the same mirrors
20. 20.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a magnet
21. 21.⚖️ 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 change it (b) we measure it (c) we keep it the same
22. 22.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
24. 24.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a battery cell
25. 25.True or false: still clear water reflects light poorly. (a) False (b) True
26. 26.True or false: a ruler is needed for the periscope. (a) False (b) True
27. 27.True or false: a dull brick reflects light well. (a) False (b) True
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🔭 Which of these reflects light poorly? (a) dark soil (b) a shiny steel plate (c) aluminium foil (d) still clear water
30. 30.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the object we look at (c) the angle of the mirrors
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
34. 34.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
35. 35.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) aluminium foil
37. 37.🔭 How many mirrors does a simple periscope use?
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.🧺 Do we need yeast for the periscope? (a) not needed (b) needed

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