The safety symbol of a razor blade reminds you to be careful when working with ______________?
sharp instruments
100
What is Earth Science the study of?
the scientific study of Earth and the universe around it
100
What is astronomy?
the study of the universe beyond Earth
100
Scientific methods often begin with ____________
observations
100
What is an observation?
the process of obtaining information by using the senses of sight, touch, taste, hearing, and smell to gather information about the world
200
True/False:
It is safest to heat the contents of test tubes in a flame while seated.
False
200
Scientists begin with the assumption that nature is ___________
understandable
200
What is meteorology?
the scientific study of Earth's atmosphere, especially in relation to weather and climate
200
What is an experiment?
a procedure that is carried out according to certain guidelines
200
What is a hypothesis?
a possible explanation or solution to a problem, from an idea that is based on observations and that can be tested
300
True/False
It is generally necessary to place your nose directly over a container to smell the material in the container.
False
300
How many branches of Earth Science are there?
4
300
What is oceanography?
the scientific study of the ocean, including the properties and movements of ocean water, the characteristics of the ocean floor, and the organisms that live in the ocean
300
What happens once scientists reach a conclusion?
they introduce their findings to the scientific community
300
What is a dependent variable?
variables that change as a result of a change in independent variables
400
True/False:
It is a good idea, and may even get you extra credit, if you show your independence by performing experiments that have not been approved by you teacher.
False
400
Scientists also expect that nature is _________
predictable
400
What is geology?
the scientific study of the origin, history, and structue of earth nd the processes that shape Earth
400
What are the orgaizesand logical approaches to scintific reseach called?
scientific methods
400
What is an independent variable?
factors that can be changed by the person performing the experiment
500
True/False:
The open end or mouth of a test tube should never be pointe toward you or anyone else.
True
500
What do scientists do?
ask questions about natural events and then work to answer those questions through experiments and examinations
500
Name the branches of Earth Science
geology, oceanography, meteorology, astronomy
500
Scientifc methods are guidelines that scientists follow when problem solving. Name these steps.
make observations, form a hypothesis, test the hypothesis, draw conclusions
500
What is a theory?
an explanation that is consistent with all existing tests and observations