Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 104 · 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 sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) True (b) False
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) a ruler (c) a strip of paper (d) a pencil
3. 3.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) gravity (c) the wind (d) air pressure
4. 4.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) slower (d) faster
5. 5.⚖️ 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 the layers”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.⚖️ 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 the one thing we change. (a) False (b) True
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a magnet (d) a white flower
8. 8.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it turns to smoke (c) it turns to drops (d) it disappears
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) False (b) True
10. 10.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sunny window (c) a battery cell (d) a balloon
11. 11.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) cooking oil (c) coloured water (d) honey
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) the amount of water (c) the time of day (d) the same white paper
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) bright sunlight (d) a sunny window
14. 14.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it changes colour (c) it turns into a kite (d) it gets too heavy
15. 15.💧 Which of these is freezing? (a) drops under a pot lid (b) ice becoming water (c) a pond icing over (d) snow turning to water
16. 16.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) powdered sugar
17. 17.⚖️ 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
18. 18.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
19. 19.True or false: ice becoming water is melting. (a) False (b) True
20. 20.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
21. 21.True or false: baking soda dissolves in water. (a) True (b) False
22. 22.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a magnet
24. 24.🧺 Which of these is not needed for the paper helicopter? (a) a balloon (b) a ruler (c) a strip of paper (d) a paper clip
25. 25.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.True or false: water with food colour is needed for the density tower. (a) False (b) True
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is the one thing we change. (a) True (b) False
29. 29.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it goes much farther (c) it flies off the string (d) it turns into a kite
30. 30.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a pebble (c) a cork (d) air
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a paper towel (d) a steel spoon
32. 32.True or false: a puddle drying up is freezing. (a) False (b) True
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.⚖️ 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
35. 35.🌈 How many colours do we name in a rainbow (VIBGYOR)?
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 “how much of each liquid”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) water is hiding there (d) the bottle is magnetic
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) the drop height (c) time to reach the floor (d) the kind of paper
40. 40.🌈 In VIBGYOR, what number colour is yellow?

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