Transcript The World of Earth Science

The World of Earth Science
Geology – the study of
the origin, history and
structure of the Earth
http://youtu.be/UK--hvgP2uY
Oceanography – the
study of the seas
http://youtu.be/BXGF3XS-yAI
http://youtu.be/I6jIMkPwahQ 5 min
Meteorology – the
study of the Earth’s
atmosphere plus
weather and climate
http://youtu.be/lT3J6a9p_o8?list=PLE09DDF9D35D05848
4 min
Sun - Earth’s closest star
Meteor – shooting star
Comet
Astronomy – the study of the universe
Scientific Methods – series of steps scientists
use to answer questions and solve problems
1. Ask a question
2. Form a hypothesis
 A possible explanation or solution to your question
3. Test a hypothesis
 Use a Controlled Experiment – test only one variable
 Collect data
 Keep clear, honest, and accurate records
4. Analyze the results
5. Draw Conclusions - does the data support your hypothesis
6. Share the Results
7. Case Closed? New evidence may become available.
Models can be used to represent things that are
too small to see or too large to completely see it.
DNA
Layers of
an atom
Scientific Models – is a pattern, plan
or representation or description
designed to show the structure of an
object, system, or concept
World Globe
Contour Map –
shows elevation
Types of Models
•Physical models
models you can touch
•Mathematical models
mathematical equations
and computer data
•Conceptual Models
system of ideas
Theory – explanation that ties together
many hypotheses and observations
Scientists use models to help
guide their search for new
information. The new
information can help support the
theory or show it to be wrong.
Metric System
International System of Units (SI)
Measurement
In the world, most scientists use SI because it is the same
whether you are in Spain, Japan or the USA.
Length – meter (m)
Volume – liter (L)
Measurement
Mass – amount of matter in an object
Kilogram (kg)
Temperature – Celsius (C)
Measurement
Density –
ratio of mass to volume
mass
volume
= density
grams per milliliter – g/mL
Area - surface area
width x length = X ² meters (X²m)
Safety RULES in the lab
•ALWAYS read the lab procedures FIRST.
•Stop to think!
•Common sense will help, if exercised.
•If in doubt, ask the teacher.
Eye Protection
Heating Safety
Electric Safety
Clothing Protection
Hand Safety
Chemical Safety
Sharp Object
http://youtu.be/38peWm76l-U
2 hr. Earth from Space NOVA program