Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 725 · 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 works by magnetism? (a) a bicycle pump (b) a suction hook (c) a fridge magnet (d) a drinking straw
2. 2.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a big bowl (c) yeast (d) water
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the person dropping (b) the length of the blades (c) time to reach the floor
5. 5.True or false: a battery cell is needed for the density tower. (a) True (b) False
6. 6.True or false: air is less dense than water. (a) False (b) True
7. 7.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) yeast
9. 9.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it turns blue (c) it spins the other way (d) it does not fall
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a balloon
13. 13.🚁 Which of these falls fast through the air? (a) a toy parachute (b) an open sheet of paper (c) a fluff of cotton (d) a crumpled paper ball
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
15. 15.🚁 Why does the paper helicopter fall slowly? (a) the floor pushes it (b) a magnet holds it (c) it has no weight (d) air pushes on its blades
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
17. 17.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
18. 18.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) slower (c) faster (d) they turn to ice
19. 19.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
20. 20.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
21. 21.True or false: a puddle drying up is melting. (a) True (b) False
22. 22.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) the water is coloured (d) water splits the light
23. 23.True or false: cold water is needed for the dissolving test. (a) True (b) False
24. 24.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) the glass gets hot (c) one mixed colour (d) three separate layers
25. 25.True or false: the rocket goes forward. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) snow turning to water (b) ice becoming water (c) drops on a cold glass (d) butter going runny
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) from your raised hand (c) a wobbly chair (d) a roof edge
29. 29.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
30. 30.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it makes it heavier (d) it guides the balloon
31. 31.True or false: two chairs is needed for the balloon rocket. (a) True (b) False
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.⚖️ 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 way we turn it (d) the same card
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
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 measure it (b) we keep it the same (c) we change it
37. 37.🛟 Which of these floats on water? (a) an ice cube (b) a glass marble (c) a ball of clay (d) an iron nail
38. 38.🔍 Which is the odd one out? (a) a coin (b) an open sheet of paper (c) a feather (d) a fluff of cotton
39. 39.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
40. 40.🧺 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) a magnet

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