161. Does your dog prefer water directly from
the faucet or tap water that’s been
refrigerated?
162. How often can people accurately tell if
someone is happy, sad, or mad just by
looking at the person’s eyes?
163. How often can people correctly
determine if a person is left-handed or
right-handed just by looking at the
person’s handwriting?
164. What melts ice the fastest: sand, cat litter,
or mineral rock salt?
165. Does temperature affect the growth rate
of shoots on a potato?
166. Which type of container traps the most
heat: a shoebox covered in aluminum foil,
plastic wrap, or wax paper?
167. How does the shape of a boat’s hull
affect its speed?
168. How does water pressure vary with
depth?
169. Which best helps prevent soil erosion on a
slope: plants, rocks, or mulch?
170. Does one brand of antacid neutralize
acids faster than another?
171. Do gym shoes have more bacteria than
sandals?
172. Does sunlight fade the paper more in
books or in magazines?
173. In which room of the house do plants
grow the highest?
174. Which toothbrushes last longest: ones with
natural or nylon bristles?
175. Which air freshener lasts longest?
176. Do mildew-resistant shower curtains really
keep mildew away longer than regular
shower curtains?
177. Does a person’s weight vary throughout
the day?
178. Do certain bicycle helmets hold up better
after an impact than others?
179. Can you skate faster with in-line skates or
roller skates?
180. Do thunderstorms happen more often in
the afternoon than in the morning?
181. Does bread stay fresher longer when it is
kept in the refrigerator or on the counter?
182. Which kind of gum keeps its flavor longer:
sugar-free or regular?
183. Which lightens stains better: vinegar or
lemon juice?
184. Which type of bread toasts fastest?
185. Do bigger lemons have more seeds than
smaller ones?
186. Does squinting improve your vision?
187. Do fans really make you cooler or do they
just make you feel like you’re cooler?
188. Do taller people take longer strides than
shorter people?
189. Can you judge depth as well using just
one eye than using two?
190. Does your “handedness” have any
relation to which eye is stronger?
191. Does exercise increase or decrease your
energy level?
192. How does your sight affect your balance?
193. Which do people prefer: a booth or a
table toward the middle of a restaurant?
194. Do plants inside a mall grow faster under
artificial light or under a skylight?
195. Does listening to rock music make you eat
faster than listening to classical music?
196. Does eye color affect how well a person
sees?
197. Does toothpaste with whitener whiten
teeth more than regular toothpaste?
198. Does washing your hands reduce the
amount of bacteria on them more than
not washing?
199. Does using conditioner leave your hair with
fewer knots than not using conditioner?
200. Does hair take longer to dry when using a
hair drier or when it dries naturally?
Now, reread all of the questions that you circled.
Do these questions have anything in common?
If so, what?
________________________________________
Look at your answer above. If the questions you
circled have anything in common, you probably
have a strong interest in that topic. You might
want to think about doing a science-fair project
on that topic.
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SCIENTIFIC INQUIRY
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