Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 835 · 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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the amount of clay (d) the kind of clay
2. 2.True or false: yeast is needed for the density tower. (a) True (b) False
3. 3.True or false: a pencil is needed for the paper helicopter. (a) False (b) True
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) turmeric powder (d) a drinking straw
5. 5.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
6. 6.💧 Which of these is freezing? (a) wet clothes drying (b) ice becoming water (c) sweat drying on skin (d) a pond icing over
7. 7.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) sugar (c) a balloon (d) honey
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a results table (d) a tub of water
11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) honey (d) two clear glasses
12. 12.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
13. 13.💧 Why do water drops form on the outside of a glass of ice water? (a) ice escapes the glass (b) the glass leaks (c) the glass sweats (d) vapour in air cools
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) yeast (c) water with food colour (d) honey
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) a balloon (d) a battery cell
17. 17.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
18. 18.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
19. 19.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a sunny window (d) a clear glass of water
21. 21.🧺 Which of these is not needed for the density tower? (a) honey (b) a spoon (c) water with food colour (d) a mirror
22. 22.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a suction hook
23. 23.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
24. 24.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) time to dissolve (c) the stirring (d) the water temperature
26. 26.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) poke it with a finger (d) smell it closely
27. 27.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a balloon (c) yeast (d) sticky tape
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) the same window (c) the same glass (d) brightness of rainbow
29. 29.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a pencil (c) a magnet (d) a paper clip
30. 30.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) glucose powder (d) food colour
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) warm water (d) a magnet
32. 32.🔮 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
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
34. 34.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
35. 35.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of pouring (b) the order of the layers (c) the same glass (d) the same three liquids
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a mirror (d) a towel for spills
37. 37.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) yellow (d) orange
38. 38.🚀 Which of these goes backward? (a) water from the oars (b) the swimmer (c) the rowing boat (d) the rocket
39. 39.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a cork (c) a feather (d) a ball of clay
40. 40.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster

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