Unit 1 lesson 1 what do scientist do
Transcript of Unit 1 lesson 1 what do scientist do
Unit 1 Lesson 1 What Do Scientists Do?
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 1 Lesson 1 What Do Scientists Do?
The Role of Scientists
Copyright © Houghton Mifflin Harcourt Publishing Company
• Science is the study of the natural world.
• A scientist asks questions about the natural world.
• There are many kinds of scientists and many questions to ask.
• Scientists work alone and in teams.
Unit 1 Lesson 1 What Do Scientists Do?
The Role of Scientists
Copyright © Houghton Mifflin Harcourt Publishing Company
• Earth scientists study things like rocks, weather, and the planets.
• Physical scientists study matter and energy.
• Life scientists study living things.
Unit 1 Lesson 1 What Do Scientists Do?
Making Observations and Asking Questions
Copyright © Houghton Mifflin Harcourt Publishing Company
• Scientists make observations about the world around them.
• An observation is information collected by using the five senses.
• Scientists ask questions about their observations.
Unit 1 Lesson 1 What Do Scientists Do?
Making Observations and Asking Questions
Copyright © Houghton Mifflin Harcourt Publishing Company
• Scientists conduct an investigation to answer their questions.
• The steps of an investigation may include asking questions, making observations, reading or talking to experts, drawing conclusions, and sharing what you learn.
Experiments
Copyright © Houghton Mifflin Harcourt Publishing Company
A Fair Test
• An experiment is a fair test. An experiment can show that one thing causes another thing to happen.
• In each experiment, you change only one factor, or variable.
Unit 1 Lesson 1 What Do Scientists Do?
A Fair Test
• To be fair and accurate, you conduct the experiment multiple times.
• To test something else, you must start a new experiment.
• Being creative and working in teams can help scientists conduct experiments.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 1 Lesson 1 What Do Scientists Do?
Scientific Methods
• Scientific investigations use scientific methods.
• Scientific methods may include the following activities: make observations, ask a question, form a hypothesis, plan and conduct an experiment, record and analyze results, draw conclusions, communicate results.
• A hypothesis is an idea or explanation that can be tested with an investigation.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 1 Lesson 1 What Do Scientists Do?
Unit 1 Lesson 1 What Do Scientists Do?
Other Kinds of Investigations
Copyright © Houghton Mifflin Harcourt Publishing Company
• Many science questions cannot be answered by doing an experiment.
• Some science questions can be answered by using an investigation guide.
• Other science questions can be answered by using models or tools.
• Some science questions can be answered with research. Research includes reading what others have written and asking experts.
Unit 1 Lesson 1 What Do Scientists Do?
Scientists Share Their Results as Evidence
Copyright © Houghton Mifflin Harcourt Publishing Company
• When scientists explain how things work, they must give evidence.
• Evidence is data gathered during an investigation. Evidence might support your hypothesis, or it might not.
• A conclusion is an explanation that is based on evidence.