Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 995 · 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.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
2. 2.🛟 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 hide the corks (d) to keep children safe
3. 3.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) a steel spoon (b) a coin (c) a stone (d) a fluff of cotton
5. 5.True or false: cotton wool is not needed for the dissolving test. (a) False (b) True
6. 6.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) neither of them (c) a sheet of glass (d) the crumpled ball
7. 7.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) water with food colour (d) a battery cell
8. 8.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) keep it in a fridge (c) stir it more (d) add more water
9. 9.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the cork itself (d) the air above
10. 10.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) a mirror (d) a spoon
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) time to reach the floor (b) the length of the blades (c) the paper clip (d) the kind of paper
12. 12.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) spilled oil is slippery (c) oil attracts magnets (d) oil turns into honey
13. 13.True or false: sugar in warm water dissolves slower. (a) False (b) True
14. 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) two chairs (c) a balloon (d) a mirror
15. 15.True or false: a mirror is not needed for the density tower. (a) False (b) True
16. 16.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a teaspoon (c) a magnet (d) cotton wool
19. 19.⚖️ 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) how full the glass is (b) the way we turn it (c) the same glass (d) the same card
20. 20.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) water (c) a balloon (d) cling film
21. 21.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a battery cell (b) a small cup (c) a big bowl (d) sunlight
22. 22.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
23. 23.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) yeast (d) a mirror
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a mirror (d) a battery cell
26. 26.True or false: a paper helicopter falls fast through the air. (a) True (b) False
27. 27.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is very cold (d) ice is magnetic
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
29. 29.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) do not lick the spoon (c) pour it on the floor (d) taste each layer
31. 31.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
32. 32.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
33. 33.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the time of day (b) the amount of water (c) brightness of rainbow (d) the same window
36. 36.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
37. 37.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
38. 38.True or false: a cotton thread lets water climb up it. (a) False (b) True
39. 39.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) sugar (c) warm water (d) a mirror
40. 40.True or false: a glass marble lets water climb up it. (a) True (b) False

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