Important molecules for biology Video transcript Let's explore the scientific method. Which at first might seem a bit intimidating, but when we walk through it, you'll see that it's actually almost a common-sense way of looking at the world and making progress in our understanding of the world and feeling good about that progress of our understanding of the world.
You see a window broken and a baseball on the floor next to the shattered glass. You can -infer- that a baseball broke your window Hypothesis — a proposed scientific explanation. This statement is testable and can be confirmed with experimentation or further observation. If fertilizer makes a plant grow faster, then seedlings planted with fertilizer will be taller than the ones planted without fertilizer Steps of the Scientific Method 1 Ask questions, make observations 2 Gather information 4 Set up a controlled experiment Manipulated variable — the variable that is deliberately changed independent variable Responding variable is variable that is observed aka dependent variable 5 Record and analyze results 6 Draw a conclusion 7 Repeat The Scientific Method in Action Suppose you observed that a cricket outside your window seems to be chirping every night, but some nights it chirps faster than others.
A friend of yours told you once that you can use the sound of a cricket chirp to tell the temperature. Curious, you decide to design an experiment. The frequency of cricket chirps will change as the temperature changes. As the temperature decreases, a cricket will chirp fewer times.
Either hypothesis will work, the important thing is that you can -test- the hypothesis by doing an experiment which will confirm or deny the statement.
To set up the experiment, you go out to your yard and capture a few crickets. You bring them inside and place them in a container.
But wait, if you have a bunch of crickets together, what if they chirp based on how many crickets there are nearby. The goal in designing an experiment is to eliminate all the variables except the one you are testing. This means all your cricket subject must be housed in the same environment same lighting, same food, same water.
Okay, so you get that set up and take the temperature of your room. Now you must wait for the crickets to start chirping. You count how many times the cricket chirps for a 5 minute period. Now you have to compare that number with the chirps that occur at different temperatures.
You may use a heating pad, or ice or any other way to lower or raise their temperature.
You would then take data for 5 minutes at the new temperature.The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. It involves making observations, formulating a hypothesis, and conducting scientific experiments.
Scientific inquiry starts with an observation followed by the formulation of a question about what has been observed.
Chemical process that builds up or breaks down materials.
Every cell needs energy and is either obtained by eating food or from the sun. Energy= the ability to . Learn biology scientific method with free interactive flashcards. Choose from different sets of biology scientific method flashcards on Quizlet. The Scientific Method in Action Suppose you observed that a cricket outside your window seems to be chirping every night, but some nights it chirps faster than others.
A friend of yours told you once that you can use the sound of a cricket chirp to tell the temperature. The scientific method is used in all sciences—including chemistry, physics, geology, and psychology.
The scientists in these fields ask different questions and perform different tests. However, they use the same core approach to find answers that are logical and supported by evidence.
A. Scientific Method and Process. Deductive reasoning applies general principles to predict specific results.
Inductive reasoning uses specific observations to construct general principles. Here is a brief description of the steps in the hypothetico-deductive method: Scientists make observations of processes and events found in nature. .