Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 391 · 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 is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) safety scissors (c) a strip of paper (d) a pencil
3. 3.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
4. 4.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it turns into a kite (c) it changes colour (d) it gets too heavy
5. 5.🧺 Do we need a magnet for the paper helicopter? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) a balloon (c) a ruler (d) a mirror
7. 7.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) the spoon (c) cooking oil (d) coloured water
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the drop height (c) the length of the blades
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the amount of water
10. 10.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) a paper clip (c) a balloon (d) turmeric powder
11. 11.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a strip of cloth
12. 12.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a battery cell (b) water (c) sunlight (d) a small cup
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
14. 14.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) False (b) True
16. 16.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to salt (c) it turns to ice (d) some water evaporates
17. 17.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a paper towel
18. 18.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a medicine dropper (d) a suction hook
19. 19.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) escaping air pushes it (d) the string pulls it
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
22. 22.🔍 Which is the odd one out? (a) a metal key (b) a glass marble (c) a ball of clay (d) a dry leaf
23. 23.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
24. 24.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) no change at all (d) less friction
25. 25.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it sinks (d) it dissolves
26. 26.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
27. 27.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they mix for ever (c) they turn to honey (d) they become solid
28. 28.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
29. 29.💧 Which change is this: drops under a pot lid? (a) freezing (b) evaporation (c) melting (d) condensation
30. 30.True or false: a steel spoon falls fast through the air. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a stone (b) a feather (c) a glass marble (d) a crumpled paper ball
32. 32.🚀 Which of these goes forward? (a) the rocket (b) gas from the rocket (c) air from the balloon (d) water from the oars
33. 33.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
34. 34.True or false: drops under a pot lid is condensation. (a) True (b) False
35. 35.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
36. 36.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
37. 37.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) slower (d) faster
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) the drop height (c) the paper clip (d) the length of the blades
39. 39.True or false: honey is denser than water. (a) False (b) True
40. 40.💧 Which change is this: butter going runny? (a) freezing (b) melting (c) condensation (d) evaporation

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