Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 701 · 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.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it does not fall (c) it spins the other way (d) it falls upward
2. 2.True or false: a ping-pong ball is denser than water. (a) False (b) True
3. 3.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) a ruler (d) safety scissors
5. 5.True or false: sugar does not dissolve in water. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a steel spoon (d) a glass marble
7. 7.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed
8. 8.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) the balloon (d) water from the oars
9. 9.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) it turns to ice (c) it turns to salt (d) the water increases
10. 10.🛟 Does a feather float or sink in water? (a) sinks (b) floats
11. 11.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it can float (d) it dissolves
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) False (b) True
13. 13.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall
14. 14.🥄 Which of these dissolves slower? (a) sugar stirred well (b) a big sugar cube (c) sugar in warm water (d) powdered sugar
15. 15.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a ping-pong ball (c) an empty capped bottle (d) a glass marble
16. 16.⚖️ 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 change it (b) we keep it the same (c) we measure it
17. 17.🚁 Which of these falls fast through the air? (a) a glass marble (b) a fluff of cotton (c) an open sheet of paper (d) a toy parachute
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) turmeric powder
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) bright sunlight (c) a sunny window (d) a sheet of white paper
20. 20.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
21. 21.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in icy water (c) sugar stirred well (d) sugar in warm water
24. 24.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the order of pouring (c) the order of the layers (d) how much of each liquid
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🎈 When does the balloon rocket stop? (a) when it gets cold (b) it never stops (c) when the air runs out (d) when it turns blue
27. 27.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
28. 28.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
29. 29.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🛟 Which of these floats on water? (a) a glass marble (b) a ball of clay (c) a pebble (d) an ice-cream stick
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) food colour (d) a balloon
32. 32.🔍 Which is the odd one out? (a) an ice cube (b) a pebble (c) a feather (d) an ice-cream stick
33. 33.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) a tall clear glass (c) honey (d) cooking oil
35. 35.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) a coin (d) very salty water
37. 37.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
39. 39.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
40. 40.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) cotton wool (c) a teaspoon (d) a mirror

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