Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 69 · 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) 10 degrees (c) 180 degrees (d) 45 degrees
2. 2.True or false: rusting iron is a change that can be undone. (a) False (b) True
3. 3.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? True or false: the kind of paper is what we measure. (a) True (b) False
4. 4.True or false: a crumpled paper ball falls slowly through the air. (a) True (b) False
5. 5.🧺 Which of these is needed for sprouting seeds? (a) a few days (b) a balloon (c) a magnet (d) turmeric powder
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) two chairs (c) a balloon (d) a battery cell
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.True or false: a hollow bird bone gets its strength from a tube shape. (a) True (b) False
9. 9.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
10. 10.🔍 What happens to a flat paper bridge with just a few coins on it? (a) it sags and falls (b) it turns to card (c) it floats up (d) it gets stronger
11. 11.💧 Which of these does not let water climb? (a) a cotton thread (b) a steel spoon (c) a sugar cube (d) a piece of chalk
12. 12.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a timer (c) a jar with a tight lid (d) a magnet
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
15. 15.🧲 Which of these is not pulled by a magnet? (a) a steel paper clip (b) a cotton cloth (c) iron filings (d) a safety pin
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) two chairs (c) a drinking straw (d) a long string
17. 17.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a ruler (c) a pencil (d) a magnet
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🧺 Do we need an adult with an iron for the secret lemon message? (a) needed (b) not needed
20. 20.🧺 Do we need a magnet for the paper bridge? (a) needed (b) not needed
21. 21.🧺 Do we need test objects for the magnet test? (a) not needed (b) needed
22. 22.🧺 Which of these is needed for the periscope? (a) a magnet (b) a ruler (c) a battery cell (d) a balloon
23. 23.🔬 Which step of the scientific method is this: “Warm took 1 minute, cold took 4.” (a) hypothesis (b) question (c) observation (d) conclusion
24. 24.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it gets hot (c) so cream does not spill (d) so it turns yellow
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the length of the blades (c) the kind of paper (d) the person dropping
26. 26.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) both the same (c) neither of them (d) the hot sunny day
28. 28.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
29. 29.🧺 Which of these is not needed for the fizzy balloon? (a) a seed (b) vinegar (c) a funnel or spoon (d) a tray for spills
30. 30.True or false: a cotton bud is needed for the secret lemon message. (a) True (b) False
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a sugar cube (d) a plastic ruler
34. 34.🫗 How do we separate small stones from dal? (a) filtering (b) sieving (c) winnowing (d) handpicking
35. 35.True or false: vinegar is not needed for the leafy bag test. (a) True (b) False
36. 36.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
37. 37.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
38. 38.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water
39. 39.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) the youngest child (c) any child (d) only an adult
40. 40.True or false: a ping-pong ball floats on water. (a) False (b) True

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