1. UNIT 1 QUIZ REVIEW

2. Science – from the Latin verb scire = “TO KNOW”
“Curiosity is the foundation of science!”

3. Scientific Method
A specific system of methods and procedures that use evidence to explain the natural world’s behavior
Through careful, systematic study, we can understand and explain the natural world’s behavior

4. *After the Scientific Method is performed
Scientific Theory
Best explanation for certain observed facts
Widely accepted by scientific community
*After the Scientific Method is performed
Example: The Theory of Plate Tectonics

5. Scientific Law Example: The Law of Gravity
Universal facts of the physical world
Can still be disproved if evidence is found!
Example: The Law of Gravity

6. Scientific Method
PROBLEM
RESEARCH
HYPOTHESIS
EXPERIMENT
ANALYZE
CONCLUSION

7. 4 Branches of Earth Science
Geology  The study of the Earth
2. Hydrology – The study of fresh water and salt water
3. Meteorology – The study of the atmosphere, weather, & climate
4. Astronomy – The study of the universe

8. Environmental Science – the study of the impact of humans on the environment
Goal:
– To understand and solve environmental problems
-Two types of interactions between humans and the environment:
1. How we use natural resources
2. How our actions alter the environment

9. Multiple Sciences
- Ecology – the study of how living things
interact with each other and with their
environment

10. Geosphere Lithosphere – the crust & upper mantle
“Round Stone” – Core, Mantle, & Crust
Lithosphere – the crust & upper mantle
Asthenosphere – the molten upper mantle

11. Hydrosphere Continuously cycling 97% Salt, 3% Fresh
All of the Water on the Earth
Continuously cycling
97% Salt, 3% Fresh

12. Atmosphere Sustains life on Earth
Thin, gaseous envelope surrounding Earth
Sustains life on Earth
100 km thick, (600 miles) but 90% is condensed in the 1st km. (~ 6-9 miles)

13. Biosphere Includes all life on Earth
Extends from the seafloor up to the atmosphere

14. The Earth is a System Two types of systems:
System – any size group of interacting parts that form a complex whole.
Two types of systems:
Closed (EX: car’s cooling system)
2. Open (EX: most natural systems)
Which type is our planet?___________

15. Earth’s Energy Sources
All systems must have an energy source
Earth’s Energy Sources
1. The Sun
2. Earth’s Core

16. 1. Resource Depletion
Renewable Resources: Can be replenished over a short period of time
EXAMPLES:
Nonrenewable Resources: May take millions of years to replenish

17. 2. Pollution – undesired change in air, water, or soil that adversely affects the health, survival, or activities of humans or other organisms

18. 3.Loss of Biodiversity – the number and variety of species that live in an area

19. a decimal system of international measurement based on 10
metric system: SI
Units of SI used in this class:
kilo= 1000
deci= 1/10 or .1
centi= 1/100 or .01
milli= 1/1000 or .001

20. When Measuring… Use… (Base Unit)
length meters (m)
volume l x w x h (m3)
liter (L)
mass grams (g)
temperature Celsius (°C)
*Mass is a measure of amount of matter in an object.
*Weight is measure of gravitational force

21. 1 meter=100 centimeters (cm) 1 meter= 1000 millimeters (mm) 1 cm= 10mm

22. Density
is the mass of an object per unit volume (D=m/v). The unit for density is a combination of more than one fundamental unit which is called a derived unit

23. The density of water is 1.0 g/mL
If an object’s density is greater than 1.0 g/mL will it sink or float?
SINK!