Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 788 · 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? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.True or false: two chairs is needed for the balloon rocket. (a) True (b) False
3. 3.⚖️ 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) the size of the bowl (c) sun or shade
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
5. 5.True or false: glucose powder dissolves in water. (a) True (b) False
6. 6.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
7. 7.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it dissolves (d) it sinks
8. 8.🧺 Do we need honey for the density tower? (a) not needed (b) needed
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
10. 10.True or false: an ice cube floats on water. (a) False (b) True
11. 11.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
12. 12.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) turmeric powder (d) food colour
14. 14.🧺 Which of these is not needed for the density tower? (a) a mirror (b) a spoon (c) water with food colour (d) cooking oil
15. 15.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it turns to drops (c) it disappears (d) it turns to smoke
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same string (c) the slope of the string (d) the same straw
17. 17.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) turmeric powder (c) yeast (d) sticky tape
18. 18.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it turns white (c) it sinks (d) it dissolves
19. 19.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
20. 20.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
21. 21.True or false: a paper towel does not let water climb. (a) True (b) False
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
23. 23.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a battery cell (d) bright sunlight
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) how full the glass is (b) whether the card stays (c) the same glass (d) the same card
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of water (c) the length of the stem
27. 27.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
28. 28.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a piece of chalk (d) a paper towel
31. 31.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a balloon (c) yeast (d) a magnet
32. 32.⚖️ 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 time we wait (b) sun or shade (c) the size of the bowl (d) the cling film cover
33. 33.📘 What do we call water with sugar dissolved in it? (a) a magnet (b) a rainbow (c) a crystal (d) a solution
34. 34.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
35. 35.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
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 same three liquids”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
39. 39.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
40. 40.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed

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