Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 543 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
3. 3.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a vacuum cleaner (d) a fridge magnet
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
5. 5.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a vacuum cleaner (d) a compass needle
6. 6.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) slide on them (c) leave them wet (d) pour more water
7. 7.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
8. 8.🔍 Which is the odd one out? (a) drops under a pot lid (b) drops on a cold glass (c) dew on morning grass (d) sweat drying on skin
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a towel for spills (d) turmeric powder
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is what we measure. (a) False (b) True
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
13. 13.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) two chairs (c) a drinking straw (d) a balloon
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) True (b) False
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) the kind of paper (c) the drop height (d) time to reach the floor
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🔍 Which is the odd one out? (a) an ice-cream stick (b) an iron nail (c) a dry leaf (d) a cork
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a balloon
19. 19.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
20. 20.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to keep children safe (d) to hide the corks
21. 21.🥄 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) sugar (d) sawdust
22. 22.True or false: a mirror is not needed for the density tower. (a) False (b) True
23. 23.True or false: a paper helicopter falls fast through the air. (a) True (b) False
24. 24.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) False (b) True
26. 26.True or false: the rocket goes backward. (a) True (b) False
27. 27.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) cling film (c) a small cup (d) a mirror
28. 28.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it sinks (c) it turns blue (d) it melts
29. 29.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a battery cell (c) a towel for spills (d) a tub of water
30. 30.💧 Which of these does not let water climb? (a) a cotton thread (b) a glass marble (c) a strip of cloth (d) a paper towel
31. 31.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a balloon (d) yeast
32. 32.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
33. 33.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a battery cell (d) bright sunlight
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a magnet
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
37. 37.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
38. 38.True or false: very salty water is less dense than water. (a) True (b) False
39. 39.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
40. 40.🌈 How many colours do we name in a rainbow (VIBGYOR)?

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