Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 76 · 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.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
2. 2.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) frozen (d) empty
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) a balloon
5. 5.True or false: coins is not needed for the paper bridge. (a) True (b) False
6. 6.🧲 Which of these is pulled by a magnet? (a) an aluminium can (b) a plastic ruler (c) a copper wire (d) an iron nail
7. 7.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the amount of water (b) the time we wait (c) sun or shade (d) the cling film cover
10. 10.🌞 When is a stick’s shadow the shortest? (a) at night (b) early morning (c) late evening (d) around noon
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
12. 12.⚖️ 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 pouring is kept the same. (a) False (b) True
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a towel (d) a stiff postcard
14. 14.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they do not sprout (b) they glow (c) they sprout faster (d) they grow fruit
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
17. 17.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) an adult with an iron (d) white paper
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🔍 Which is the odd one out? (a) plugging in the iron (b) ironing the paper (c) putting the iron away (d) letting the paper dry
20. 20.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
21. 21.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
22. 22.🚀 Which of these goes backward? (a) the swimmer (b) the rocket (c) water a swimmer pushes (d) the balloon
23. 23.📘 The browning of lemon juice with heat is a ___ change. (a) chemical (b) physical (c) musical (d) magnetic
24. 24.🚁 Which of these falls slowly through the air? (a) a fluff of cotton (b) a coin (c) a crumpled paper ball (d) a glass marble
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a drinking straw (d) a battery cell
26. 26.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the order of pouring (c) the order of the layers (d) how much of each liquid
27. 27.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) roots (c) flower (d) leaves
28. 28.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) sun or shade (c) the cling film cover (d) the time we wait
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.True or false: two books is needed for the paper bridge. (a) True (b) False
31. 31.🧺 Which of these is needed for making butter? (a) a balloon (b) a jar with a tight lid (c) a battery cell (d) a magnet
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the tub of water (d) the shape of the clay
33. 33.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
34. 34.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a white flower (d) a glass of water
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we change it (b) we measure it (c) we keep it the same
38. 38.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a fridge magnet
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) an empty thread reel (d) a magnet
40. 40.🛟 Static from a comb is safe. Which electricity must children never play with? (a) paper bits on a comb (b) plug points at home (c) a rubbed balloon (d) a rubbed plastic comb

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