SESSION 1

If water flows from the roots up the stem to the flower, then the flower will bloom.

• True

• False

Students perform one trial of a scientific experiment. If the results of that trial do not support the prediction, what should the students do next?

• change the procedures of the experiment

• conduct multiple trials

• stop the experiment

• find other results that support their prediction

In a scientific investigation, factors that are not tested and must stay the same are called _____.

• dependent variables

• independent variables

• controlled variables
• uncontrolled variables

Which step of the scientific method is the same as "making an educated guess?"

• forming a hypothesis

• asking a question

• analyzing results

• drawing conclusions

Eduardo did a science experiment on ice cubes changing into water. Which statement below could be an observation of Eduardo's science experiment?

• Ice cube A melted faster because there was salt on it.

• Ice cube A melted into water after 10 minutes.

• Ice cubes melt because of their exposure to air.

• Ice cubes with salt on them are better than ice cubes without salt on them.

Based on the pictures, which object weighs the least?

• book

• hockey puck

• rock

• toy dog

Jessica predicts that turtle eggs that are kept in a nest at a warmer temperature will be more likely to hatch into female turtles. She tests this by using 9 different incubators set to specific temperatures. Her results are shown in this chart: Which of these statements is most accurate?

• Jessica's hypothesis was supported; more females were produced at higher temperatures.

• Jessica's hypothesis was not supported; females will hatch at all temperatures.

• Jessica ran her experiment incorrectly, the data is not accurate.

• There is not enough data to determine whether temperature affects the number of females.

What can be inferred from the experiment results?

• The experiment was successful.

• The experiment failed.

• The results were inconclusive.

• The experiment needs to be repeated.

How do the final results from Group 1 compare to those of Group 2?

• The two groups have different results because they used a different number of steps.

• The two groups have different results because they heated their mixtures for different times.

• The two groups have different results because they stirred their mixtures for different times.

• The two groups have different results because they mixed their beakers in different orders.

Which question would best be answered with an experimental investigation?

• How does a seed grow into a tomato plant?

• Do tomato plants grow faster than cabbage plants?

• How does temperature affect cabbage plant growth?

• Do tomato plants have longer roots than cabbage plants?