Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 213 · 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 balloon rocket? (a) a battery cell (b) vinegar (c) a mirror (d) two chairs
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to keep children safe (d) to hide the corks
3. 3.🔍 Which is the odd one out? (a) a feather (b) an ice-cream stick (c) a steel spoon (d) a dry leaf
4. 4.⚖️ 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) time to reach the floor (c) the drop height (d) the length of the blades
5. 5.⚖️ 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 what we measure. (a) True (b) False
6. 6.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
7. 7.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
8. 8.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
9. 9.🛟 Which of these sinks in water? (a) a ball of clay (b) an empty capped bottle (c) a ping-pong ball (d) a dry leaf
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.True or false: a cork is denser than water. (a) True (b) False
12. 12.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) taste it (d) smell it closely
13. 13.True or false: a suction hook works by magnetism. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) a piece of thermocol (b) an iron nail (c) a metal key (d) a ball of clay
15. 15.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) juice likes plastic (d) air pushes it up
16. 16.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
17. 17.🥄 Which of these dissolves in water? (a) glucose powder (b) sand (c) cooking oil (d) chalk powder
18. 18.🔍 Which is the odd one out? (a) a feather (b) a stone (c) a fluff of cotton (d) a paper helicopter
19. 19.⚖️ 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
20. 20.💧 Which of these is freezing? (a) drops under a pot lid (b) ice becoming water (c) making ice lollies (d) drops on a cold glass
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a magnet (c) a tub of water (d) a results table
23. 23.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) water is sticky (d) ice is magnetic
24. 24.⚖️ 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 what we measure. (a) False (b) True
25. 25.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) give them to a baby (c) chew them (d) throw them away safely
26. 26.🧺 Which of these is not needed for the density tower? (a) a battery cell (b) honey (c) cooking oil (d) water with food colour
27. 27.True or false: honey is less dense than water. (a) True (b) False
28. 28.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they separate again (c) they turn to honey (d) they become solid
29. 29.🔍 Which is the odd one out? (a) glucose powder (b) small pebbles (c) sawdust (d) sand
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) the same glass (c) how full the glass is
32. 32.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is kept the same. (a) False (b) True
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) distance it travels (c) how big we blow it (d) the same tape
34. 34.True or false: a paper towel does not let water climb. (a) True (b) False
35. 35.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
36. 36.⚖️ 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 what we measure. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a coin (b) a steel spoon (c) a ball of clay (d) a ping-pong ball
38. 38.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a toy parachute (c) a stone (d) a feather
39. 39.True or false: a coin falls slowly through the air. (a) False (b) True
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False

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