I.Write a testable hypothesis for these situations.

1.Your class is in charge of filling the bird feeders at the Nature Center at your school. You notice that the nuthatches seem to prefer to eat at the sunflower seed feeder more than they stop at the mixed seed feeder.

2.Your cat just had six kittens. There's a new kitten chow on the market that claims to be healthier for young kittens. Your family has raised kittens before and fed them a different brand of food. You'd like to find out for yourself if the new brand is better.

3.Mom and I were baking a cake for my brother's birthday. We didn't have any baking powder. The recipe said to add one teaspoon of baking powder to the cake batter. Since that's such a small amount we baked the cake anyway. We were very disappointed when the cake came out of the oven flat instead of fluffy. We think maybe we needed to add the baking powder.

4.You and your friends were studying lists of spelling and vocabulary lists. It seemed like everyone could easily remember the first word on the list and the fifteenth word on the list. It seemed very hard to remember the words in the middle of the list.