Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 87 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s science idea. 3. For a fair test: one thing changed, the rest kept the same, one thing measured. 4. For safety: an adult helps, nothing goes in the mouth, no heat, sharp tools or plug points for children.

1. 1.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
3. 3.🧺 Do we need cotton wool for sprouting seeds? (a) not needed (b) needed
4. 4.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of salt (c) days to see crystals
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
8. 8.🔍 Which is the odd one out? (a) table salt (b) sugar (c) cooking oil (d) glucose powder
9. 9.🧺 Which of these is needed for making butter? (a) turmeric powder (b) yeast (c) a mirror (d) cold water to rinse
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) sand is ground up (d) salt rains down
13. 13.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) turmeric powder (d) two small mirrors
14. 14.True or false: a ruler is not needed for the paper bridge. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a pebble (b) a ping-pong ball (c) honey (d) very salty water
16. 16.🛟 Which of these is a safe habit? (a) running with glassware (b) working with no adult (c) touching a hot iron (d) asking an adult first
17. 17.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) keep it away from eyes (d) shake it near your face
18. 18.True or false: “Do seeds need water to sprout?” is the observation step. (a) False (b) True
19. 19.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a battery cell (d) a towel for spills
21. 21.True or false: a coin is denser than water. (a) False (b) True
22. 22.True or false: the swimmer goes forward. (a) True (b) False
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) a magnet (d) a mirror
24. 24.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
25. 25.True or false: water becoming ice is freezing. (a) False (b) True
26. 26.True or false: water is needed for a seed to sprout. (a) True (b) False
27. 27.🧈 Which of these is a change that can be undone? (a) baking a cake (b) freezing water (c) milk turning to curd (d) rusting iron
28. 28.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
29. 29.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
31. 31.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the flagpole (d) on the blackboard
32. 32.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) moong seeds (c) a magnet (d) a few days
33. 33.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🧺 Three of these are needed for the magnet test. Which one is NOT needed? (a) a results chart (b) yeast (c) a bar magnet (d) test objects
35. 35.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
36. 36.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) a mirror (d) sugar
37. 37.🔮 Predict: the gap between the books gets wider. The bridge holds ___. (a) the same coins (b) only water (c) fewer coins (d) more coins
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the time we wait (b) the size of the bowl (c) sun or shade (d) the amount of water
39. 39.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
40. 40.🧺 Do we need a battery cell for making butter? (a) needed (b) not needed

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