Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 1 · 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.⚖️ Fair test — which kind of ball bounces highest? Which of these is kept the same? (a) bounce height (b) the kind of ball (c) the person dropping
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) True (b) False
4. 4.🏗️ Where does a bamboo pole get its strength from? (a) triangles (b) tubes (c) arches and domes
5. 5.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
6. 6.True or false: boiled seeds sprouts in a few days. (a) True (b) False
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🔍 Which is the odd one out? (a) oily paper (b) clean water (c) frosted glass (d) butter paper
9. 9.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a string (c) a balloon (d) a battery cell
10. 10.True or false: a magnet is not needed for the periscope. (a) False (b) True
11. 11.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
12. 12.💧 Which change is this: butter going runny? (a) condensation (b) evaporation (c) freezing (d) melting
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🔍 Which is the odd one out? (a) salt (b) soil (c) sugar (d) air
15. 15.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
16. 16.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
17. 17.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
19. 19.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) dark soil
20. 20.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
21. 21.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a plastic comb (b) turmeric powder (c) tiny paper bits (d) a balloon
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
23. 23.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the tub of water
25. 25.True or false: orange juice is an acid. (a) True (b) False
26. 26.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
27. 27.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) True (b) False
29. 29.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a stopwatch (c) a mirror (d) a balloon
30. 30.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
31. 31.🧲 Two magnets: north near south. Do they pull together or push apart? (a) pull together (b) push apart
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
34. 34.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
35. 35.True or false: husk from rice grain is done by sieving. (a) True (b) False
36. 36.🧺 Do we need an adult with an iron for the secret lemon message? (a) needed (b) not needed
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) days to see crystals (b) sunny or shady place (c) the kind of salt (d) the amount of salt
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) the same glass (c) whether the card stays
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we keep it the same (b) we measure it (c) we change it

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