MY Science Library I Can Prove it Investigating Science by Kelli Hicks Science Content Editor Shirley Duke Rourke Educational Media rourkeeducationalmedia com Teacher Notes available at rem4teachers com
Prove It Have you ever wondered how things work Scientists conduct experiments every day to try to solve problems and answer questions They observe how different chemicals react to each other and what happens when they test a hypothesis or an idea about how something works Scientists are always working to prove it But how do they do it Scientists are careful to protect the results of their experiments by wearing gloves and keeping their work spaces clean 4
An agronomist is a food scientist This type of scientist studies soil and how the environment affects growing crops How Did They Prove It Ivan Petrovich Pavlov 1849-1936 wanted to find out about the reactions of people and animals to a stimulus He experimented with how dogs reacted to a bell ringing to signal meal time He discovered that dogs could be trained to associate the sound of the bell with the delivery of the food His work has helped many researchers study behavior Ivan Petrovich Pavlov 5
