Lab Investigation Quiz P1

What is the main purpose of identifying variables in a scientific experiment?

• To make the experiment more complicated

• To control factors that may influence the results

• To use as many variables as possible

• To confuse other scientists

In the bouncing ball experiment, what is the independent variable?

• The type of ball used

• The surface on which the ball bounces

• The drop height

• The bounce height

Jon set up an experiment to see how the mass of a ball affects the distance it rolls from a ramp. Identify the independent variable

• mass of the ball

• distance it rolls from a ramp

You want to test which soil will help the grass grow taller. The height of the grown grass is the __________ variable

• dependent variable

• independent variable

What is the most appropriate title you would write for this graph?

• time in minutes and length of flagella

• effect of time on the length of flagella

When constructing a data table, the independent variable is recorded in

• left column of the table

• right column of the table

• last column of the table

What type of relationship would this trend line indicate?

• direct

• inverse

• constant

Three baseball players are investigating to see who can throw a baseball the farthest. They mark an area on the playground for their investigation. What should they keep constant?

• height of the player

• color of the ball

• place from where the player throws

If plants receive more water, the number of leaves will increase. This is an example of

• wonderful question

• hypothesis

• conclusion

A summary of the experiment that includes whether the hypothesis was supported or not.

• conclusion

• results

• hypothesis