Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 704 · 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.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a balloon (d) cooking oil
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) turmeric powder (c) a tall clear glass (d) water with food colour
3. 3.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) some water evaporates (c) it turns to salt (d) the water increases
4. 4.💧 Which of these is freezing? (a) a misty bathroom mirror (b) drops on a cold glass (c) wet hair drying (d) a pond icing over
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
6. 6.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
7. 7.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) slower (c) faster (d) it stops in the air
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) False (b) True
9. 9.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) a mirror (c) a magnet (d) a balloon
10. 10.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
11. 11.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) a tall clear glass (c) water with food colour (d) cooking oil
13. 13.True or false: a cork is denser than water. (a) False (b) True
14. 14.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
16. 16.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) how many drops form (b) sun or shade (c) the amount of water (d) the cling film cover
18. 18.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
19. 19.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) escaping air pushes it (d) a magnet pulls it
20. 20.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a paper towel (d) a cotton thread
21. 21.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it flies upward (c) it turns into a ball (d) it spins round
22. 22.True or false: a drinking straw works by air pressure. (a) True (b) False
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) time for colour to show (c) the amount of colour (d) the room it stands in
24. 24.🔍 Which is the odd one out? (a) air (b) an ice cube (c) cooking oil (d) a coin
25. 25.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
26. 26.🛟 Which of these floats on water? (a) a metal key (b) a dry leaf (c) an iron nail (d) a steel spoon
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a glass of water (d) a few hours of waiting
28. 28.⚖️ 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 amount of water (b) the time of day (c) the same glass (d) brightness of rainbow
29. 29.🧺 Do we need yeast for the paper helicopter? (a) not needed (b) needed
30. 30.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) its hollow shape (c) steel is very light (d) sea water is warm
31. 31.🔍 How can you get the salt back from salty water? (a) stir it more (b) add more water (c) keep it in a fridge (d) let the water evaporate
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a magnet (c) a results table (d) small test objects
33. 33.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
34. 34.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
35. 35.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.True or false: sugar in warm water dissolves slower. (a) True (b) False
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) vinegar (b) a drinking straw (c) a balloon (d) sticky tape
38. 38.🥄 Which of these dissolves in water? (a) chalk powder (b) sand (c) sugar (d) cooking oil
39. 39.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
40. 40.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a crumpled paper ball (c) a fluff of cotton (d) a paper helicopter

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