Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 994 · 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.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) the glass gets hot (c) three separate layers (d) bubbles of gas
2. 2.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
3. 3.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) honey (c) cold water (d) warm water
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a battery cell (d) a mirror
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it gets cold (c) it never stops (d) when it turns blue
8. 8.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) straight above you (c) in front of you (d) under the ground
9. 9.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a towel for spills (c) turmeric powder (d) a magnet
10. 10.True or false: yeast is needed for the water rainbow. (a) True (b) False
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a mirror (c) a towel for spills (d) small test objects
12. 12.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a pebble (c) a cork (d) an ice cube
13. 13.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) food colour (d) sugar
15. 15.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) run around the tub (d) leave water on the floor
16. 16.True or false: a magnet is not needed for the water cycle bowl. (a) False (b) True
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) a spoon (d) a magnet
20. 20.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card flies away (c) the glass breaks (d) the card stays on
21. 21.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) warm water (c) two clear glasses (d) a magnet
22. 22.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) warm water (c) a magnet (d) a mirror
23. 23.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a battery cell (c) a balloon (d) a small cup
25. 25.True or false: a small cup is needed for the water cycle bowl. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) food colour (d) cooking oil
27. 27.🌈 In VIBGYOR, what number colour is blue?
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a results table (d) a towel for spills
30. 30.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a drinking straw
31. 31.🔍 Which is the odd one out? (a) a stone (b) a crumpled paper ball (c) a fluff of cotton (d) a steel spoon
32. 32.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) yeast (d) a clear glass of water
34. 34.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) more drops form (c) the bowl freezes (d) fewer drops form
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is the one thing we change. (a) True (b) False
36. 36.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) ice cubes (c) a magnet (d) a balloon
37. 37.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.⚖️ 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 drop height (c) the length of the blades
39. 39.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) keep it in a fridge (d) stir it more
40. 40.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic pin holder

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