Scientific Method & Lab Safety

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method
• recipe
• data collection
• metric system

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

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

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

• dependent variable
• independent variable
• data
• control group

This variable is the actual data collected during the experiment. 

• independent variable
• dependent variable
• control group
• data group

There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?

• quantitative
• qualitative

There are two types of data. Which type of data involves descriptions that cannot be counted or measured?

• qualitative
• quantitative

What is a hypothesis?

• an educated guess stating what you believe will be the result of your experiement
• a random guess
• a statement of the outcome of your experiment
• step by step directions for your experiment

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What variables should be kept constant/controlled? 

• type of plant, flower pot,  soil, and amount of sunlight
• water, apple juice, milk
• only the amount of sunlight
• type of plant only

What is being changed in this experiment?

• ramp height
• the speed that the ball rolls
• type of ball

What is being measured or the result/effect of this experiment?

• ramp height
• the speed that the ball rolls
• type of ball