Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 709 · 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.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
2. 2.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
3. 3.True or false: a coin is denser than water. (a) False (b) True
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) a magnet (d) a clock or timer
5. 5.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it dissolves (c) it floats up (d) it turns blue
6. 6.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
7. 7.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
10. 10.⚖️ 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) False (b) True
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) turmeric powder (c) a big bowl (d) cling film
14. 14.⚖️ 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
15. 15.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) True (b) False
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) the time we wait (c) the cling film cover (d) the size of the bowl
18. 18.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) play near a deep pond (d) leave water on the floor
19. 19.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
20. 20.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
21. 21.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
22. 22.⚖️ 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) the cling film cover (b) how many drops form (c) the amount of water (d) sun or shade
23. 23.🧺 Which of these is needed for the dissolving test? (a) a teaspoon (b) a balloon (c) a mirror (d) honey
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) turmeric powder (c) a results table (d) a towel for spills
25. 25.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
26. 26.True or false: powdered sugar dissolves slower. (a) True (b) False
27. 27.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the string pulls it (c) the straw is heavy (d) escaping air pushes it
28. 28.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a sundial (d) a fridge magnet
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) small test objects (d) a tub of water
30. 30.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in warm water (c) sugar in icy water (d) sugar left unstirred
31. 31.True or false: a piece of chalk does not let water climb. (a) False (b) True
32. 32.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) faster (c) slower (d) they never dry
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same glass (c) the amount of water (d) the time of day
34. 34.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
35. 35.🥄 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) table salt (d) sand
36. 36.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
37. 37.🚁 Why does the paper helicopter fall slowly? (a) air pushes on its blades (b) the floor pushes it (c) a magnet holds it (d) it has no weight
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a sink or a bucket (d) a mirror
39. 39.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it spins round (c) it turns into a ball (d) it flies upward
40. 40.🔍 Which is the odd one out? (a) air (b) honey (c) a cork (d) an ice cube

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