Science Fair Topics
1. What techniques and instruments do scientist use to measure the distance, size, and temperature of stars and planets?
2. Can you tell time by the sun and the shadows it casts?
3. How do sailors use the stars for guidance?
4. How do the cones of various fir and pine trees differ?
5. Will bean plants grow by moonlight?
6. What factors increase the rate at which milk sours?
7. Does it matter how or which way you plant a seed?
8. How do the roots of various plants differ in the way they get water from the soil?
9. How fast does human hair grow? What is it made of? What factors affect its growth, rate, health, and strength?
10. How may types of bird feathers are there? What are their structures/functions?
11. Which insects are “camouflage artists” and why?
12. Do all living creatures have bones? Are there “substitutes” for bones?
13. Why do children have physical characteristics like their parents? What are chromosomes? What are genes? What causes twins?
14. Does the salt content have any effect on the freezing or boiling points of water?
15. What properties prevent plastic from being biodegradable? How many kinds of plastics are there? Are any of them considered to be environmentally safe?
16. Why is Styrofoam considered to be so harmful to our environment?
17. How do the rains of plants and animals “fossilize”? What causes wood to become petrified rather than to decompose?
18. How are affected by dust and smoke in the air? By pollutants? Do these affect weather conditions?
19. What are clouds made of? What are the different kinds of clouds, and how are they different? Are clouds different from ground fog?
20. What is ozone? Can you smell it? Why is it undesirable at ground level but desirable in the upper atmosphere?
21. What causes the winds to blow? Are hurricanes and tornadoes just high winds?
22. Why do shadows of the same object differ in shape and size at various times during the day?
23. How is wind direction determined?
24. How is the amount of rainfall measured?
25. Is it possible to create a cloud? If so, how? What type? If not, why not?
26. What factors create ocean waves?
27. Why are there two high tides and two low tides during the day?
28. Why does some ocean water look blue, some green, and some light brown in color? What causes the Yellow Sea to look yellow sometimes? The Red Sea to look red sometimes?
29. What is sonar? How do scientists employ this technique in underwater exploration? Can sonar be used to help scientists draw actual maps of the ocean floor?
30. What are tidal pools? Where are you most likely to find these? Why are scientists interested in tidal pools?
31. Does hot water freeze faster than cold water? Why or why not?
32. How does a mirror reflect an image?
33. Why do some objects float higher in salt water than fresh water?
34. Why do windows team up on the inside? Why do windows frost up on the outside?
35. How does sound travel? Through what media does it travel fast?
36. How dis steam used to do work?
37. How is magnetism created from electricity?
38. How does an airplane fly?
39. What do gears do? What are the different kinds of gears
40. Why does oil work better than water to reduce friction between two surfaces?
41. What is glass made of? Are there different qualities of glass? How is “safety glass” made?
42. In the summer sun, why do we feel hotter in clothes of a dark color than in clothes lighter in color?
43. Why are the rain forests of South America so crucial to the ecological balance of the Earth? Why are they being cleared and by whom? How do you think his can be stopped?
44. How would you go about reading some effective ways sot control one type of pollution? What would your suggestions be?
45. What is a computer chip? How does it work? Can a computer have a memory? If so, how?