Chapter 1, Section 1
Chapter 1, Section 1Objectives What is the goal of science?What is a hypothesis?VocabularyCreate a flash card for the following terms:ScienceObservationDataInferenceHypothesisWhat is the Goal of Science?To investigate and understand nature, to explain events in nature, and to use those explanations to make useful predictionsScience is an ORGANIZED way of using evidence to learn about the natural world.
ObservationsScience starts with observationObservation involves using the 5 senses to gather informationCan be quantitative (numbers) or qualitative (not numerical, more descriptive)All of this information is gathered as DATA, or evidenceWhat are the 5 senses??INTERACTIVEMonster ActivityFrom Biology Cornerpass out odd objects, students must use the 5 senses to write a detailed description, then pass out the papers and they must find the object (model whole class first)
Monster ActDraw a monster for 10 min. Then write instructions on how to draw your monster. Then give instruct. To partner, they draw, see if they can find the matching monster!5Interpreting the EvidenceScientists must make inferences based on the observations.Inferences are a logical, unbiased, interpretation based on prior knowledge, experience, and observationExamples of Inferences:You see a broken window and a baseball laying on the floor under the window. You INFER that the baseball broke the window.INFERENCE - a logical interpretation based on prior knowledge * Drawing a conclusionINFERENCE - a logical interpretation based on prior knowledge * Drawing a conclusion
INFERENCE - a logical interpretation based on prior knowledge * Drawing a conclusion
Explaining the EvidenceA HYPOTHESIS is a possible explanation or answer to a scientific question.A Hypothesis must be TESTABLE.Examples:1. Purina food will reduce a dog's shedding.2. Putting Miracle Grow on tomato plants will make them produce more tomatoes.3. The drug Avapro will lower a person's blood pressure.
Examples of HypothesesExamplesGoodBadPlants will grow taller with Miracle Grow.Plants will grow better when given Miracle Grow.Girls will score higher on math tests than boys.Girls are smarter than boys.Hermit crabs will choose colorful shells over plain shells.Hermit crabs like colorful shells.INTERACTIVEWrite a hypothesis for the experiment below:A scientist is going to measure toy car speed on a ramp. He is going to test if the size of the wheel affects the speed of the toy car going down a ramp. He has a regular toy car, a toy car with extra large wheels, and a toy car with mini-wheels.What is your hypothesis??
Identify the GOOD hypothesesCopy the good hypotheses and explain why it is good.Plants will grow taller with sunlight.Boys like video games.9th graders are smarter than middle school students.Dogs will run faster after eating a bone.Bounty paper towels are stronger than the store brand.Cats are good mouse hunters.Quick CheckWhat is the goal of science?What is a hypothesis?Write a hypothesis for the following question: Which environment do ants prefermoist or dry?