Mystery Tubes Lesson 204 Mr. Moore

How do we do science?

Objectives You will engage in a scientific investigation to discover how the mystery tube works. When the man comes in, this is what you are learning. SIS1. Make observations, raise questions, and formulate hypotheses. SIS2. Design and conduct scientific investigations. SIS3. Analyze and interpret results of scientific investigations. SIS4. Communicate and apply the results of scientific investigations.

Make observations about your tube Observe, raise questions and make a observations Qualitative observations are ones that involve your senses such as sight, smell, touch, taste and hearing. They do not involve numbers Quantitative Observations are ones that result in measured numbers and involve instruments such as rulers, balances, graduated cylinders, beakers, and thermometers. Give students 5 minutes to make both types of observations. Provide various measurement devises to use in coming up with their observations.

Constructing Hypothesis Hypothesis -an explanation for the occurrence of some specified group of phenomena Experiment - a test for the purpose of discovering something unknown or to prove the validity of the hypothesis. Scientist use their observations to create models that help explain how something works. Models can be pictures as well as and physical structures. Students will be asked to draw a picture of the internal structure of the tube. They will also be asked to describe the workings of the internal matter of the tube. That description should explain the results of pulling on the various ropes. After they have a visual model, they will be asked to make a physical model with tubes and string.

Your hypothesis “I hypothesis that if I pull certain strings the opposing one will pull in” Our prediction is that one rope is looped around making the two ends of the rope come out on the same side. I hypothesis that one rope is looped around the other. I hypothesis the ropes are connected like a chain.

Visual Models A B C D

Why do you report your results? Peer Review “Peer reviewed” means that the paper is analyzed by fellow scientists, who evaluate the methods used and identify any potential flaws in logic or methodology that might shed doubt on the findings. provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results. Results that are reproducible are more believable or trustworthy. If enough support is gathered, they may become a scientific law. Hypothesis Theory Law

What is the difference between a Scientist and Engineer?