Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 847 · 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 order of pouring is the one thing we change. (a) False (b) True
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) sun or shade (c) the time we wait
3. 3.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a mirror (c) two chairs (d) a long string
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
7. 7.True or false: small pebbles dissolves in water. (a) False (b) True
8. 8.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
9. 9.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
10. 10.🍯 Which of these is denser than water? (a) an ice cube (b) a cork (c) a ping-pong ball (d) very salty water
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
12. 12.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
13. 13.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
14. 14.🧺 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 towel for spills
15. 15.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) oil turns into honey (d) spilled oil is slippery
16. 16.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) escaping air pushes it (d) a magnet pulls it
17. 17.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a crumpled paper ball (c) a paper helicopter (d) a feather
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) True (b) False
19. 19.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) yeast (c) a magnet (d) a balloon
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
21. 21.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) fewer drops form (c) the bowl freezes (d) the water turns red
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) yeast
25. 25.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
26. 26.🥄 Which of these dissolves in water? (a) sand (b) small pebbles (c) table salt (d) chalk powder
27. 27.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a piece of foil (d) a rubber eraser
28. 28.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
29. 29.True or false: sugar does not dissolve in water. (a) False (b) True
30. 30.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) a pebble (b) a cork (c) air (d) an ice cube
32. 32.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it flies upward (c) it spins round (d) it turns into a ball
33. 33.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
34. 34.🔍 Which is the odd one out? (a) a cork (b) a coin (c) a piece of thermocol (d) a ping-pong ball
35. 35.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
36. 36.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) sunlight (c) a balloon (d) ice cubes
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the slope of the string (c) how big we blow it
40. 40.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “how much of each liquid”? (a) we change it (b) we keep it the same (c) we measure it

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