Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 783 · 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 needed for the density tower? (a) a balloon (b) turmeric powder (c) a tall clear glass (d) a battery cell
2. 2.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
3. 3.🛟 Which of these floats on water? (a) a piece of thermocol (b) a metal key (c) a ball of clay (d) a steel spoon
4. 4.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a magnet (d) bright sunlight
5. 5.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a mirror (c) water (d) a big bowl
6. 6.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) a spoon (c) cooking oil (d) honey
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) True (b) False
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) brightness of rainbow (c) the same window (d) the time of day
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
11. 11.True or false: snow turning to water is melting. (a) False (b) True
12. 12.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
13. 13.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) slower (c) it stops in the air (d) faster
14. 14.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) cotton wool (c) warm water (d) a teaspoon
15. 15.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) in the water layer (c) at the very bottom (d) on top of the oil
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) it looks nicer (d) little air left inside
18. 18.💧 Why do water drops form on the outside of a glass of ice water? (a) ice escapes the glass (b) the glass leaks (c) vapour in air cools (d) the glass sweats
19. 19.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
20. 20.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same white paper
22. 22.True or false: an iron nail sinks in water. (a) True (b) False
23. 23.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a spoon (c) honey (d) a battery cell
25. 25.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they turn to honey (c) they separate again (d) they become solid
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a paper helicopter (b) a crumpled paper ball (c) an open sheet of paper (d) a toy parachute
28. 28.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
29. 29.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) warm water is thicker (c) sugar likes the dark (d) particles move faster
30. 30.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) safety scissors (c) a strip of paper (d) a balloon
31. 31.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🚀 Which of these goes backward? (a) the rowing boat (b) gas from the rocket (c) the swimmer (d) the rocket
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
36. 36.True or false: a mirror is not needed for the paper helicopter. (a) False (b) True
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
38. 38.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) ice is magnetic (d) water is sticky
39. 39.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
40. 40.🔍 Which is the odd one out? (a) water becoming ice (b) ice becoming water (c) a pond icing over (d) making ice lollies

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