Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 759 · 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 needed for the coloured flower experiment. (a) True (b) False
2. 2.⚖️ 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 keep it the same (c) we measure it
3. 3.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) more friction, less far (c) it goes faster (d) no change at all
5. 5.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil attracts magnets (c) oil turns into honey (d) oil makes it rain
6. 6.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to win a prize (d) to splash everyone
7. 7.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) turmeric powder (c) yeast (d) a pencil
8. 8.🔍 Which is the odd one out? (a) a pebble (b) a ping-pong ball (c) air (d) cooking oil
9. 9.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
10. 10.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) the amount of water (c) the same glass (d) brightness of rainbow
12. 12.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a vacuum cleaner (d) a medicine dropper
13. 13.True or false: a balloon is not needed for the density tower. (a) False (b) True
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a magnet (d) turmeric powder
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
17. 17.🔍 Which is the odd one out? (a) cooking oil (b) a glass marble (c) a pebble (d) very salty water
18. 18.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
20. 20.True or false: cooking oil is not needed for the density tower. (a) False (b) True
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
22. 22.True or false: a flower stem lets water climb up it. (a) False (b) True
23. 23.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) two chairs (d) a magnet
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) a paper clip (c) safety scissors (d) a strip of paper
25. 25.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) a balloon (c) cling film (d) a magnet
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a paper helicopter (b) a stone (c) a steel spoon (d) a coin
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the length of the blades (c) the paper clip
30. 30.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a crystal (c) a magnet (d) a solution
31. 31.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a comb (c) sugar (d) a mirror
32. 32.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it goes less far (d) it turns into a kite
33. 33.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it does not fall (c) it falls upward (d) it spins the other way
34. 34.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
35. 35.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is less dense (d) ice is very cold
36. 36.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a bicycle pump (c) a suction hook (d) a vacuum cleaner
37. 37.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) honey (c) cooking oil (d) a spoon
38. 38.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a steel spoon (d) a plastic ruler
39. 39.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) a steel spoon (d) a metal key
40. 40.🛟 Which of these floats on water? (a) an ice-cream stick (b) a steel spoon (c) a ball of clay (d) a glass marble

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