Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 299 · 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.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a long string (c) vinegar (d) yeast
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) evaporation (d) capillary action
3. 3.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) yeast (c) safety scissors (d) a pencil
4. 4.💧 Which of these is condensation? (a) a puddle drying up (b) drops on a cold glass (c) sweat drying on skin (d) wet hair drying
5. 5.🔍 Which is the odd one out? (a) butter going runny (b) snow turning to water (c) water becoming ice (d) ice becoming water
6. 6.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a paper towel (d) a piece of foil
7. 7.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
8. 8.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) sugar likes the dark (c) cold water is wet (d) warm water is thicker
9. 9.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
10. 10.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
12. 12.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
13. 13.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) turmeric powder (d) cooking oil
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) True (b) False
15. 15.🧺 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 few hours of waiting (d) a magnet
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the same glass (c) brightness of rainbow
17. 17.⚖️ 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) how many drops form (b) sun or shade (c) the amount of water (d) the cling film cover
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a mirror (d) a glass of water
19. 19.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) two clear glasses (c) a teaspoon (d) a comb
20. 20.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
22. 22.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🧺 Which of these is needed for the density tower? (a) water with food colour (b) a mirror (c) a magnet (d) yeast
25. 25.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) yeast (d) a magnet
26. 26.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a clock or timer (c) a comb (d) a mirror
27. 27.⚖️ 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
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a strip of paper (c) a mirror (d) safety scissors
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a stiff postcard (d) a sink or a bucket
32. 32.True or false: a mirror is needed for the density tower. (a) False (b) True
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a compass needle (d) a vacuum cleaner
35. 35.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
36. 36.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
37. 37.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
38. 38.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) powdered sugar (d) both the same
39. 39.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) the water increases (c) it turns to salt (d) some water evaporates
40. 40.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed

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