Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 638 · 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 is the odd one out? (a) a stone (b) a glass marble (c) a paper helicopter (d) a crumpled paper ball
2. 2.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
3. 3.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) it stops in the air (c) it floats up (d) slower
4. 4.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) give them to a baby (c) keep them in your mouth (d) chew them
5. 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same white paper
7. 7.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) two chairs (d) a battery cell
9. 9.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
10. 10.True or false: a big sugar cube dissolves slower. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) sawdust (d) sugar
12. 12.🔍 What do you see after pouring honey, water and oil into one glass? (a) three separate layers (b) the glass gets hot (c) bubbles of gas (d) one mixed colour
13. 13.⚖️ 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) the same card (b) the way we turn it (c) how full the glass is (d) whether the card stays
14. 14.🚁 Which of these falls fast through the air? (a) a feather (b) a fluff of cotton (c) an open sheet of paper (d) a steel spoon
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) turmeric powder (c) cling film (d) sunlight
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of sugar (c) the kind of sugar (d) the amount of water
17. 17.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a spoon (c) turmeric powder (d) honey
18. 18.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
19. 19.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) honey (c) the spoon (d) coloured water
20. 20.⚖️ 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 keep it the same (b) we change it (c) we measure it
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the person dropping (b) the length of the blades (c) the paper clip (d) the kind of paper
22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a comb (c) cold water (d) two clear glasses
23. 23.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
24. 24.💧 Which of these is condensation? (a) a pond icing over (b) drops on a cold glass (c) ice becoming water (d) butter going runny
25. 25.🛟 Which of these floats on water? (a) a glass marble (b) a coin (c) an ice cube (d) an iron nail
26. 26.🍯 Which of these is denser than water? (a) a ping-pong ball (b) air (c) very salty water (d) a cork
27. 27.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a suction hook
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it sinks (d) it dissolves
30. 30.🔍 Which is the odd one out? (a) water becoming ice (b) making ice lollies (c) drops on a cold glass (d) a pond icing over
31. 31.🧺 Which of these is not needed for the density tower? (a) turmeric powder (b) honey (c) a spoon (d) cooking oil
32. 32.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
33. 33.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it spins the other way (c) it does not fall (d) it falls upward
34. 34.⚖️ 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 what we measure. (a) True (b) False
35. 35.💧 Which of these is condensation? (a) ice becoming water (b) dew on morning grass (c) making ice lollies (d) wet clothes drying
36. 36.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
37. 37.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🚁 Which of these falls slowly through the air? (a) a coin (b) a stone (c) a steel spoon (d) an open sheet of paper
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
40. 40.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a pencil (c) a balloon (d) a strip of paper

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