Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 607 · 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 does not fall (b) it falls upward (c) it turns blue (d) it spins the other way
2. 2.⚖️ 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 change it (b) we keep it the same (c) we measure it
3. 3.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a cork (c) a pebble (d) an ice cube
4. 4.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.True or false: a balloon is needed for the water rainbow. (a) True (b) False
6. 6.⚖️ 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) sun or shade (b) the cling film cover (c) the amount of water (d) how many drops form
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) False (b) True
8. 8.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a paper clip (c) a strip of paper (d) a ruler
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
10. 10.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) chalk powder (d) glucose powder
11. 11.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
12. 12.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) the rocket (d) water a swimmer pushes
13. 13.True or false: snow turning to water is melting. (a) False (b) True
14. 14.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
15. 15.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.🔍 Which is the odd one out? (a) a coin (b) very salty water (c) a glass marble (d) cooking oil
18. 18.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
19. 19.⚖️ 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) how much of each liquid (b) the same glass (c) the same three liquids (d) the order of pouring
20. 20.True or false: yeast is not needed for the water rainbow. (a) True (b) False
21. 21.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
22. 22.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) ice cubes (d) a mirror
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) True (b) False
24. 24.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
25. 25.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery
26. 26.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
27. 27.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) friction (d) sunlight
28. 28.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) the balloon (d) water from the oars
29. 29.🚁 Why does the paper helicopter fall slowly? (a) air pushes on its blades (b) a magnet holds it (c) the floor pushes it (d) it has no weight
30. 30.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the drop height (b) the paper clip (c) the length of the blades (d) time to reach the floor
31. 31.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is what we measure. (a) False (b) True
32. 32.True or false: a suction hook works by air pressure. (a) True (b) False
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
34. 34.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) gardening shears (c) sharp kitchen shears (d) safety scissors
35. 35.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
36. 36.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
37. 37.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
38. 38.🔮 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) on top of the oil (d) at the very bottom
39. 39.True or false: glucose powder dissolves in water. (a) False (b) True
40. 40.True or false: a glass marble floats on water. (a) True (b) False

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids