Scientific Practices

There are fourteen penguins.

• Observation
• Inference

The penguin is jumping because he wants to get food.

• Observation
• Inference

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

The part of the experiment that remains the same for the control and experimental group.

• constants
• control
• independent
• dependent

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent
• Independent
• Control
• Compound

At the end of an experiment, after analyzing your results, what must you draw?

• A picture

• A conclusion

• A chart

What must a good hypothesis be?

• biological

• testable

• difficult

Which of the following is a good way to analyze data?

• Organize it into charts and graphs and do calculations if necessary.

• Try to find some way to make it support your hypothesis.

• Check it over and then copy it.

At the end of an investigation, what should you do if you conclude that your results do not support your hypothesis?

• Buy new measurement tools.

• Repeat your investigation, and then change your hypothesis if necessary.

• Change the topic you are studying.