Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 96 · 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.True or false: vinegar is an acid. (a) True (b) False
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a sink or a bucket (d) a towel
3. 3.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) a mirror
4. 4.🧺 Do we need moong seeds for sprouting seeds? (a) not needed (b) needed
5. 5.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) the sugar cube (d) powdered sugar
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) sugar (d) small pebbles
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
9. 9.🧺 Do we need a magnet for the paper helicopter? (a) not needed (b) needed
10. 10.True or false: south near south pull together. (a) True (b) False
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) honey (c) a tall clear glass (d) a battery cell
12. 12.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a bicycle pump (d) a medicine dropper
13. 13.🌱 Is water needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
16. 16.🍞 Why do we add sugar to the yeast? (a) to colour it (b) to make it heavy (c) to make it sweet (d) it is food for yeast
17. 17.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) lots of fizzy bubbles (c) it turns to ice (d) nothing at all
18. 18.🫗 How do we separate small stones from dal? (a) handpicking (b) sieving (c) evaporating (d) winnowing
19. 19.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
21. 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) turmeric powder (d) two chairs
22. 22.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to smoke (b) it disappears (c) it turns to drops (d) it turns to salt
23. 23.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
24. 24.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) rub it hard (c) add baking soda (d) ignore it
25. 25.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
26. 26.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
27. 27.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a battery cell (d) bright sunlight
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a balloon (d) a piece of string
30. 30.🔍 Which is the odd one out? (a) vinegar (b) orange juice (c) detergent water (d) curd
31. 31.True or false: coins of one kind is not needed for the ruler lever. (a) False (b) True
32. 32.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the string pulls it (c) escaping air pushes it (d) the straw is heavy
33. 33.🔍 Which is the odd one out? (a) letting the paper dry (b) reading the message (c) dipping the cotton bud (d) ironing the paper
34. 34.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “the kind of coins”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is magnetic (c) hot water can scald (d) hot water is heavy
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: salt water keeps turmeric yellow. (a) False (b) True
38. 38.🚁 Which of these falls fast through the air? (a) a crumpled paper ball (b) an open sheet of paper (c) a paper helicopter (d) a toy parachute
39. 39.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) sand (d) table salt
40. 40.🧺 Do we need a jar with a tight lid for making butter? (a) needed (b) not needed

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