Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 5 · 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.🔍 What do you see after pouring honey, water and oil into one glass? (a) the glass gets hot (b) bubbles of gas (c) three separate layers (d) one mixed colour
2. 2.True or false: touching a hot iron is a safe habit. (a) True (b) False
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of yeast (b) size of the balloon (c) the same bottles (d) the water temperature
4. 4.🛟 Is this a safe or an unsafe habit in an experiment: running with glassware? (a) safe (b) unsafe
5. 5.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) its hollow shape (d) steel is very light
6. 6.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) two chairs (d) yeast
8. 8.True or false: a flat table is needed for the ruler lever. (a) True (b) False
9. 9.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
10. 10.🪴 Which part of a plant does this job: carry water upward? (a) leaves (b) flower (c) roots (d) stem
11. 11.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of water (b) the water temperature (c) time to dissolve (d) the stirring
13. 13.🌉 Which of these makes a weak bridge? (a) a wet flat sheet (b) paper with folded edges (c) rolled paper tubes (d) a zigzag-folded sheet
14. 14.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a battery cell (c) a ruler (d) a strip of paper
15. 15.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the leaves (c) the fruits (d) the flowers
16. 16.⚖️ 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) time to reach the floor (c) the length of the blades (d) the paper clip
17. 17.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is what we measure. (a) False (b) True
18. 18.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
19. 19.🌱 Which of these is not needed for a seed to sprout? (a) sunlight (b) warmth (c) water (d) air
20. 20.🔮 Predict: the adult irons for only one second. What happens? (a) the paper floats (b) it gets darker (c) writing turns green (d) writing stays faint
21. 21.🌱 Is warmth needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the light we look in (d) the colour we see
24. 24.⚖️ Fair test — which kind of ball bounces highest? Which of these is the one thing we change? (a) the floor surface (b) the person dropping (c) the kind of ball (d) the drop height
25. 25.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
26. 26.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
28. 28.🌉 Does rolled paper tubes make a strong or a weak bridge? (a) strong bridge (b) weak bridge
29. 29.🔮 Predict: you wet the comb before trying again. What happens? (a) it hardly works (b) it lights up (c) it works better (d) it becomes a magnet
30. 30.🔍 Which is the odd one out? (a) wiping up spills at once (b) running with glassware (c) mixing random liquids (d) working with no adult
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) False (b) True
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a drinking straw (c) sticky tape (d) a long string
35. 35.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a cotton thread (d) a steel spoon
36. 36.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.True or false: a ramp uses a pulley. (a) False (b) True
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
39. 39.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to make bread rise (c) to wash dishes (d) to clean floors
40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a paper clip (c) warm water (d) sugar

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