Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 80 · 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.🔮 Predict: the adult irons for only one second. What happens? (a) the paper floats (b) writing stays faint (c) writing turns green (d) it gets darker
2. 2.🔍 Which is the odd one out? (a) sunlight (b) salt (c) vinegar (d) sugar
3. 3.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) two small mirrors (d) a ruler
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a results table (d) a mirror
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
9. 9.True or false: a toy parachute falls slowly through the air. (a) True (b) False
10. 10.⚖️ Fair test — which paper shape holds the most coins? What do we do with “where coins are placed”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass leaks (b) ice escapes the glass (c) vapour in air cools (d) the glass sweats
12. 12.True or false: wet seeds by a window sprouts in a few days. (a) False (b) True
13. 13.True or false: cooking oil is needed for the density tower. (a) True (b) False
14. 14.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) in the oil layer (c) on top of the oil (d) at the very bottom
15. 15.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) a magnet (c) a cotton bud (d) an adult with an iron
16. 16.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a dull brick (d) a rough wooden board
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.True or false: south near north push apart. (a) False (b) True
19. 19.🍞 Does yeast need sunlight to make gas? (a) yeast needs it (b) yeast does not need it
20. 20.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a mirror
21. 21.🍞 Which of these is something yeast does not need? (a) vinegar (b) sugar (c) time (d) warm water
22. 22.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a cotton bud (c) yeast (d) an adult with an iron
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
24. 24.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a balloon (c) a funnel or spoon (d) a mirror
25. 25.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
26. 26.🔬 How many steps are there in our scientific method (question to conclusion)?
27. 27.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) straight down (d) backward
28. 28.🔍 Which is the odd one out? (a) a steel spoon (b) a pebble (c) a ball of clay (d) a ping-pong ball
29. 29.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) time to reach the floor (b) the kind of paper (c) the length of the blades (d) the person dropping
31. 31.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
32. 32.⚖️ What is the turning point of a lever called? (a) the load (b) the fulcrum (c) the effort (d) the axle
33. 33.⚖️ 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 amount of water (b) the size of the bowl (c) sun or shade (d) the cling film cover
34. 34.True or false: a temple dome gets its strength from triangles. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the number of drops (d) the colour we see
36. 36.True or false: a ruler is needed for the pendulum. (a) True (b) False
37. 37.🧲 Why is an aluminium can not pulled by a magnet? (a) it is too light (b) it is too cold (c) it is too shiny (d) it has no iron in it
38. 38.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a straight stick (d) a mirror
40. 40.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False

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