Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 622 · 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.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a battery cell
3. 3.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
4. 4.True or false: a magnet is needed for the balloon rocket. (a) False (b) True
5. 5.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) a big sugar cube (d) powdered sugar
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a mirror (d) a balloon
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) a clock or timer (c) sugar (d) warm water
8. 8.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
9. 9.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same glass
11. 11.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
12. 12.True or false: a magnet is needed for the dissolving test. (a) True (b) False
13. 13.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
14. 14.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) rain (c) sunshine (d) wind
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a battery cell (d) a white flower
17. 17.🔍 Which is the odd one out? (a) honey (b) a pebble (c) a coin (d) an ice cube
18. 18.🧺 Do we need a balloon for the water cycle bowl? (a) needed (b) not needed
19. 19.True or false: a comb is not needed for the dissolving test. (a) True (b) False
20. 20.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
22. 22.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) a paper cutter (c) sharp kitchen shears (d) gardening shears
23. 23.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a ruler (c) a mirror (d) a strip of paper
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
25. 25.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
26. 26.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they separate again (c) they mix for ever (d) they turn to honey
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of colour (c) the amount of water (d) the length of the stem
28. 28.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the density tower? (a) yeast (b) a battery cell (c) a magnet (d) a spoon
30. 30.True or false: a pebble is denser than water. (a) False (b) True
31. 31.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) chew them (d) throw them away safely
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
33. 33.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a mirror (c) a sheet of white paper (d) a clear glass of water
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) a balloon (d) a teaspoon
36. 36.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.True or false: a crumpled paper ball falls fast through the air. (a) True (b) False
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) the straw is hot (d) juice likes plastic
40. 40.True or false: sugar left unstirred dissolves faster. (a) False (b) True

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