Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 930 · 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.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it stays still in air (c) it turns into a ball (d) it flies upward
2. 2.True or false: a teaspoon is needed for the dissolving test. (a) False (b) True
3. 3.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it still floats (c) it turns white (d) it dissolves
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the paper clip (b) time to reach the floor (c) the length of the blades (d) the kind of paper
5. 5.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it guides the balloon (d) it holds water
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the size of the bowl (b) the time we wait (c) how many drops form (d) sun or shade
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) a mirror
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
9. 9.🛟 What should you do with popped balloon pieces? (a) chew them (b) throw them away safely (c) give them to a baby (d) keep them in your mouth
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the amount of clay
11. 11.True or false: making ice lollies is condensation. (a) True (b) False
12. 12.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
13. 13.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) sunshine (c) rain (d) lightning
14. 14.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) food colour (d) a white flower
16. 16.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
17. 17.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a bicycle pump
22. 22.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
23. 23.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) aim it at your friend (c) put string round a neck (d) keep it away from faces
24. 24.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the flat sheet (c) a sheet of glass (d) the crumpled ball
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) food colour
26. 26.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) a pencil (d) turmeric powder
28. 28.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) ice cubes (c) cling film (d) a magnet
29. 29.True or false: wet clothes drying is evaporation. (a) False (b) True
30. 30.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the amount of water (c) the same window (d) the time of day
32. 32.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
33. 33.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) sticky tape (c) a drinking straw (d) a battery cell
34. 34.True or false: a steel spoon does not let water climb. (a) False (b) True
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a magnet (d) a clear glass of water
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sunny window (c) a clear glass of water (d) bright sunlight
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is the one thing we change. (a) True (b) False
38. 38.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a cotton thread (c) a steel spoon (d) a glass marble
39. 39.⚖️ 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 change it (c) we measure it
40. 40.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) a magnet (d) the cold water

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