Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 298 · 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.💧 Which of these is condensation? (a) butter going runny (b) sweat drying on skin (c) a misty bathroom mirror (d) a puddle drying up
2. 2.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
3. 3.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the glass is painted (d) the paper makes colours
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🧺 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 mirror (d) a glass of water
6. 6.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
7. 7.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
8. 8.⚖️ 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 glass is kept the same. (a) True (b) False
9. 9.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the big log (d) the small pebble
10. 10.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it dissolves (c) it bounces up (d) it floats
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) the kind of paper (c) time to reach the floor (d) the drop height
12. 12.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a rubber eraser (d) a flower stem
13. 13.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
14. 14.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the card flies away (c) the glass breaks (d) the water turns to ice
15. 15.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a plastic ruler (d) a paper towel
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) air inside pushes back (d) the cap is sticky
18. 18.⚖️ 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 amount of water (b) the same window (c) the same white paper (d) brightness of rainbow
19. 19.⚖️ 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
20. 20.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the stickiest (c) it is the densest (d) it is the coldest
21. 21.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) bright sunlight (d) yeast
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) the same tape (c) the same straw (d) how big we blow it
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
24. 24.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) more friction, less far (d) no change at all
25. 25.True or false: the rowing boat goes backward. (a) False (b) True
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a balloon (c) two clear glasses (d) cold water
27. 27.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
28. 28.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True
30. 30.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
31. 31.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) powdered sugar
32. 32.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) True (b) False
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the stirring (c) time to dissolve (d) the amount of water
39. 39.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
40. 40.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed

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