Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 671 · 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.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they mix for ever (c) they become solid (d) they turn to honey
2. 2.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
3. 3.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) False (b) True
5. 5.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) gardening shears (d) safety scissors
6. 6.💧 Which of these is freezing? (a) dew on morning grass (b) ice becoming water (c) butter going runny (d) making ice lollies
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
8. 8.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a rubber eraser (d) a flower stem
10. 10.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🔍 Which is the odd one out? (a) ice becoming water (b) snow turning to water (c) butter going runny (d) wet clothes drying
13. 13.🔍 Which is the odd one out? (a) a fluff of cotton (b) an open sheet of paper (c) a coin (d) a paper helicopter
14. 14.True or false: a piece of chalk does not let water climb. (a) False (b) True
15. 15.True or false: a pond icing over is condensation. (a) False (b) True
16. 16.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of water
19. 19.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) a magnet (c) a big bowl (d) sunlight
20. 20.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
21. 21.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it spins the other way (c) it does not fall (d) it turns blue
22. 22.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) it stays still (c) backward (d) straight down
23. 23.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it flies upward (c) it turns into a ball (d) it spins round
24. 24.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
25. 25.🍯 Which of these is less dense than water? (a) a coin (b) honey (c) a pebble (d) a ping-pong ball
26. 26.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.True or false: sugar is not needed for the dissolving test. (a) True (b) False
28. 28.🛟 Which of these floats on water? (a) a ping-pong ball (b) a coin (c) a ball of clay (d) a steel spoon
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) a balloon (d) a drinking straw
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a glass of water (d) a few hours of waiting
33. 33.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a magnet (c) a ruler (d) safety scissors
34. 34.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it travels farther (d) it speeds up
35. 35.True or false: table salt dissolves in water. (a) False (b) True
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a magnet (c) a towel for spills (d) a tub of water
37. 37.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
38. 38.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) it turns to ice (c) the water increases (d) some water evaporates
39. 39.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a ruler (c) a strip of paper (d) a battery cell
40. 40.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) False (b) True

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