Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 118 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s science idea. 3. For a fair test: one thing changed, the rest kept the same, one thing measured. 4. For safety: an adult helps, nothing goes in the mouth, no heat, sharp tools or plug points for children.

1. 1.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it gets hot (c) so cream does not spill (d) so it turns yellow
2. 2.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) cotton wool (c) a comb (d) a teaspoon
3. 3.True or false: vinegar is an acid. (a) False (b) True
4. 4.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? True or false: the kind of paper is kept the same. (a) False (b) True
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a balloon (d) a glass of water
6. 6.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
7. 7.🧺 Which of these is not needed for the paper bridge? (a) coins (b) a magnet (c) a ruler (d) two books
8. 8.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
9. 9.True or false: south near south push apart. (a) True (b) False
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a ruler (d) a balloon
11. 11.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is what we measure. (a) True (b) False
12. 12.⚖️ 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 window
13. 13.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🔍 Which is the odd one out? (a) putting things in mouth (b) reading the steps first (c) working with no adult (d) touching a hot iron
15. 15.🧺 Which of these is not needed for the static comb? (a) a plastic comb (b) dry hair (c) yeast (d) tiny paper bits
16. 16.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
17. 17.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) the sugar cube (d) powdered sugar
18. 18.True or false: a piece of chalk lets water climb up it. (a) False (b) True
19. 19.🔮 Predict: you stop shaking after only one minute. What do you have? (a) still runny cream (b) butter lumps (c) cheese (d) ghee
20. 20.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a magnet (c) honey (d) a tall clear glass
21. 21.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) both the same (b) the hot sunny day (c) neither of them (d) the cool cloudy day
22. 22.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) a flat tissue (c) paper with folded edges (d) one flat sheet
23. 23.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
24. 24.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
25. 25.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation
26. 26.🌱 Where does a sprouting seed get its first food from? (a) the air (b) the cotton wool (c) food stored in the seed (d) the sunlight only
27. 27.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
28. 28.True or false: a zigzag-folded sheet makes a strong bridge. (a) False (b) True
29. 29.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) baking soda (d) chalk powder
31. 31.🌈 In VIBGYOR, what number colour is indigo?
32. 32.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a steel spoon (c) a toy parachute (d) a coin
33. 33.True or false: wet clothes drying is evaporation. (a) False (b) True
34. 34.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
35. 35.True or false: vinegar is needed for the periscope. (a) True (b) False
36. 36.True or false: soil is not needed for a seed to sprout. (a) False (b) True
37. 37.⚖️ Fair test — which kind of ball bounces highest? Which of these is kept the same? (a) the kind of ball (b) bounce height (c) the person dropping
38. 38.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
39. 39.⚖️ 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) how much of each liquid (b) the order of the layers (c) the same three liquids (d) the order of pouring
40. 40.True or false: a safety pin is not pulled by a magnet. (a) False (b) True

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