Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 698 · 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 — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) glucose powder (d) table salt
3. 3.True or false: a flower stem does not let water climb. (a) True (b) False
4. 4.True or false: a mirror is not needed for the water cycle bowl. (a) False (b) True
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a towel (d) a stiff postcard
6. 6.🔍 Which is the odd one out? (a) an ice cube (b) a pebble (c) cooking oil (d) a ping-pong ball
7. 7.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.💧 Which change is this: ice becoming water? (a) condensation (b) freezing (c) melting (d) evaporation
9. 9.🧺 Do we need a mirror for the paper helicopter? (a) not needed (b) needed
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of pouring (b) how much of each liquid (c) the same three liquids (d) the order of the layers
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a balloon (d) a mirror
12. 12.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) table salt (d) sugar
13. 13.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
14. 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a magnet (c) a balloon (d) sticky tape
15. 15.🚁 Which of these falls fast through the air? (a) a feather (b) a steel spoon (c) an open sheet of paper (d) a toy parachute
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.📘 What does “dense” mean? (a) heavy for its size (b) very hot (c) very thin (d) very colourful
19. 19.True or false: sugar in icy water dissolves faster. (a) True (b) False
20. 20.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the same three liquids (c) the order of the layers (d) the order of pouring
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sunny window (d) a clear glass of water
23. 23.🔍 Which is the odd one out? (a) wet hair drying (b) a puddle drying up (c) water becoming ice (d) wet clothes drying
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) a tall clear glass (d) yeast
25. 25.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a compass needle (d) a suction hook
26. 26.True or false: a clock or timer is not needed for the dissolving test. (a) False (b) True
27. 27.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a drinking straw
28. 28.🧺 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) a clear glass of water (d) turmeric powder
29. 29.💧 Which of these is condensation? (a) snow turning to water (b) sweat drying on skin (c) drops on a cold glass (d) a pond icing over
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a battery cell (c) sticky tape (d) two chairs
31. 31.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) behind you (d) in front of you
32. 32.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) the water turns red (c) more drops form (d) fewer drops form
33. 33.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) chalk powder (d) small pebbles
34. 34.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
35. 35.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the stickiest (c) it is the coldest (d) it is the densest
36. 36.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
37. 37.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) a sheet of white paper (d) yeast
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) a drinking straw (d) two chairs
39. 39.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
40. 40.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they stay white (d) they all turn green

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