Biology: Chp 1 Introduction/Scientific Method

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

• dependent variable
• independent variable
• data
• control group

The summary at the end of an experiment that explains the results. 

• conclusion
• procedures
• materials
• responding variable

In a controlled experiment, how many variables can be worked with at a time? 

• one
• none
• two or more
• how ever many makes sense.

Which statement is an inference about this picture?

• The van is tan.
• The  van ran into KFC. 
• The driver was hungry. 
• Red and white are part of the KFC building. 

Tags

NGSS.HS-PS2-3

_{If the boy crawled out of the water, the goat would push him in.}

• inference
• observation

Jennifer sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

• distance traveled by the ball

• height of the ramp

• mass of the ball

• weight of the ball

Jennifer sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the dependent variable.

• height of the ramp

• distance traveled by the ball

• mass of the ball

• weight of the ball

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

What is a hypothesis?

• A hypothesis is the right answer to an experiment.

• A hypothesis is the wrong answer to an experiment.

• A hypothesis is an educated guess.

• A question or a problem.

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion