Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 72 · 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.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
2. 2.🍞 Which of these is something yeast needs? (a) sunlight (b) vinegar (c) salt (d) sugar
3. 3.🏗️ Which of these gets its strength from a tube shape? (a) an eggshell (b) a hollow bird bone (c) a temple dome (d) a roof frame
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the object is cold (d) the ground is dark
6. 6.💧 Which of these is condensation? (a) wet hair drying (b) ice becoming water (c) a misty bathroom mirror (d) snow turning to water
7. 7.True or false: reading the message is a job a child can do. (a) True (b) False
8. 8.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
9. 9.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) honey (c) a battery cell (d) water with food colour
10. 10.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a comb (c) a small bottle (d) dry yeast
13. 13.⚙️ Which simple machine is a crane? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
14. 14.True or false: orange juice is a base. (a) False (b) True
15. 15.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
16. 16.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) plugging in the iron (d) dipping the cotton bud
17. 17.🔬 In the scientific method, which step number is “observe and record”?
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
19. 19.True or false: a balloon is needed for the dissolving test. (a) False (b) True
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a piece of foil (d) a strip of cloth
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) straight down (c) backward (d) forward
25. 25.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a balloon (b) coins of one kind (c) a round pencil (d) a 30 cm ruler
26. 26.🔍 Which is the odd one out? (a) a magnet (b) sugar (c) salt (d) vinegar
27. 27.True or false: hold up the leaves is a job of the stem. (a) True (b) False
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) food colour (d) a glass of water
29. 29.True or false: turmeric powder is not needed for the secret lemon message. (a) True (b) False
30. 30.True or false: detergent water keeps turmeric yellow. (a) False (b) True
31. 31.True or false: a round pencil is not needed for the ruler lever. (a) False (b) True
32. 32.True or false: a paper towel lets water climb up it. (a) True (b) False
33. 33.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) a ruler (b) sheets of paper (c) two books (d) turmeric powder
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) turmeric powder (c) small test objects (d) a tub of water
35. 35.True or false: making ice lollies is condensation. (a) True (b) False
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🔬 Which step of the scientific method is this: “So seeds need water to sprout.” (a) question (b) conclusion (c) observation (d) hypothesis
38. 38.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) warm water (c) a balloon (d) a comb
39. 39.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
40. 40.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “the same ruler”? (a) we change it (b) we measure it (c) we keep it the same

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