Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 441 · 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 works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a medicine dropper
2. 2.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it can pop loudly (d) it gets too heavy
3. 3.🔍 Which is the odd one out? (a) a piece of thermocol (b) a steel spoon (c) a coin (d) a glass marble
4. 4.⚖️ 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 kind of clay
5. 5.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
6. 6.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a comb (c) a teaspoon (d) a clock or timer
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.True or false: a fluff of cotton falls slowly through the air. (a) False (b) True
9. 9.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) a battery cell (d) a magnet
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
11. 11.True or false: cooking oil dissolves in water. (a) False (b) True
12. 12.True or false: the swimmer goes forward. (a) False (b) True
13. 13.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
15. 15.True or false: turmeric powder is not needed for the water cycle bowl. (a) False (b) True
16. 16.🍯 Which of these is denser than water? (a) cooking oil (b) a ping-pong ball (c) an ice cube (d) honey
17. 17.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
18. 18.🔍 Which is the odd one out? (a) a ball of clay (b) an iron nail (c) a metal key (d) an ice cube
19. 19.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) water a swimmer pushes (d) the rowing boat
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) how full the glass is (c) whether the card stays (d) the same glass
21. 21.⚖️ 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 amount of water (c) how many drops form (d) sun or shade
22. 22.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) vinegar (d) a drinking straw
24. 24.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a battery cell (c) sticky tape (d) vinegar
25. 25.🔍 Which is the odd one out? (a) a glass marble (b) a cork (c) very salty water (d) honey
26. 26.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) gardening shears (c) safety scissors (d) a paper cutter
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the room it stands in
28. 28.True or false: honey is less dense than water. (a) True (b) False
29. 29.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) a balloon (c) a strip of paper (d) a magnet
30. 30.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
31. 31.True or false: yeast is needed for the balloon rocket. (a) False (b) True
32. 32.🌈 In VIBGYOR, what number colour is orange?
33. 33.True or false: a balloon is needed for the water cycle bowl. (a) False (b) True
34. 34.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) safety scissors (c) a pencil (d) a battery cell
35. 35.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) on top of the oil (c) in the water layer (d) at the very bottom
36. 36.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
37. 37.⚖️ 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 length of the blades (c) the person dropping
38. 38.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
40. 40.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) False (b) True

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