Bellringer Think of five questions about the natural world. Write your responses in your science journal.
Describe similarities and differences between science disciplines.
Describethree methods of investigation.
Identify some benefits of science.
Describehow scientific knowledge may be modified.
Describe five jobs that use or contribute to science.
Start with a Question
is the knowledge gained by observing the natural world. Asking questions can help you gather knowledge.
In Your Own NeighborhoodWhat questions can you ask about your surroundings?
The World and BeyondWhat questions can you ask about deserts, forests, or beaches? What type of plants and animals live in each of these places?
Investigation: The Search for Answers
Research Look up information in textbooks, encyclopedias, and magazines. Search the Internet.
Observation Take a look around to find answers to your question. Watch your subject.
Experimentation Try an experiment to learn the answers to your question. Test your hypothesis.
Why Ask Questions?
Fighting DiseasesScience has led to many life-saving discoveries, such as the vaccination for polio.
Answering Society’s QuestionsScience develops different technologies to address our problems, such as reducing the threat of a polluted environment.
Why Ask Questions?, continuedSavingResourcesScience has helped us make our natural resources last longer and to plan ahead so that resources are not used up.
Why Ask Questions?, continued
Answering Society’s Questions Sometimes, society faces questions that do not seem to have immediate answers. Scientific research often leads to the answers to those questions.
Advancing Scientific KnowledgeAsking questions also leads to changes or modifications in scientific knowledge. As scientists do research to answer questions, they may find new information that challenges prevailing scientific theories.
Scientists All Around You
ZoologistA person who studies the lives and needs of animals.
Geochemist A person who specializes in the chemistry of rocks, minerals, and soil.
Mechanic A person who uses science to solve problems with machines.
Scientists All Around You, continued
Oceanographer A person who studies the ocean, including waves, currents, plants, animals, and the ocean floor.
VolcanologistA person who studies one of Earth’s most interesting processes—volcanoes.