Name ______

Speed Dating Problems:

1. Ullyssa heard your can bake cookies by placing the cookies in your warm car all day. She wanted to test to see how temperature affects the time it takes to bake cookies. She baked three batches of cookies, one at 250, one at 350, and one at 450.

What problem or hypothesis is she trying to solve?

______

______

______

Name her variables.

______

______

______

2. Juan and Christian love roller coasters and were wondering how the angle of the roller coaster track affects the speed of the car. They set up track at different angles and measured how long it took a marble to complete the run.

What problem or hypothesis is she trying to solve?

______

______

______

Name her variables.

______

______

______

3. Lots of people try mentos in different kinds of soda to see which soda has the greatest reaction with the mentos, but Kiadara and Anayancy wanted to know if the temperature of the soda has any affect on the reaction. TBelow are their procedures.

  1. Get three bottles of soda, one cold, one warm, and one hot.
  2. Add mentos to each one
  3. Record how high the reaction went.

Name two ways they could improve their procedures:

1. ______

______

2. ______

______

4. Below are the results for Kiadara and Anayancy’s experiment.

Temperature / Trial 1 / Trial 2 / Trial 2 / Average
Cold (3C) / 2 cm / No overflow / 4 cm / 2 cm
Warm (26C) / 4 cm / 8 cm / 6 cm / 6 cm
Hot (75C) / 50 cm / 75 cm / 75 cm / 67 cm

What conclusions can be drawn from their experiment and results? ______

How valid do you think these conclusions are, based on the group’s experiment and results? Explain your answer fully. ______