1. MCAS Review
Earth Science
By: Mrs. Edgar, Mrs. Porzio, and Ms. Robarts

2. Earth’s Systems Interact
Landscapes are controlled by inter-actions between Earth’s internal and external heat machines (Homeostasis)

3. Topographic Maps--Contour Lines

4. Remember Topographic Maps?
UFSwEm3c Click on this link, watch the video from 1:18-2:25 and answer questions 1 and 2. 

5. Heat Transfer In the Earth
Thermal energy always moves from warmer to cooler objects.
Heat is the result of molecules vibrating quickly.
Heat is moving energy.

6. Heat Energy http://www.youtube.com/watch?v=yUEPG MnRqGs
Watch this video on Heat Energy and answer questions 3 and 4.

7. Convection Current
The movement of a substance that is caused by differences in temperature and density.
EXAMPLES: Ocean Currents,
Warm equatorial currents flow toward the poles, while polar currents flow towards the equator
NATURE LIKES EVERYTHING
TO BE EVEN! (Homeostasis)

8. The Layers of the Earth
Answer question # 5

9. Earth’s Layers
The Earth is divided into four main layers.
*Inner Core
*Outer Core
*Mantle
*Crust
Watch this video and answer questions 6 and org/interactives/dy namicearth/structur e.html

10. Plate Tectonics Wegner’s Continental Drift Tectonic Plates
move on Earth’s
surface, the
convection heat
beneath
them moving them.
90% of the world’s earthquakes and volcanoes occur along the Ring of Fire.

11. Plate Boundaries Plate Boundary Diagram Description Example DIVERGENT
(Constructive plate boundary)
Constructive plate boundaries occur when two plates move away from each other .
North American and Eurasian Plate
CONVERGENT (Where two plates collide, destructive plate boundary)
Collision plate boundaries occur when two continental plates move towards each other.
Indo-Australian and the Eurasian Plate
SUBDUCTION (Type of convergent boundary)
Destructive plate boundaries occur when an oceanic plate is forced under (or subducts) a continental plate .
North American Plate and the Juan da Fuca Plate
TRANSFORM (plates slide past each other)
Conservative plate boundaries occur when two plates slide past each other.
North American and Pacific Plate

12. Volcanoes & Earthquakes-- talk about your heat transfer!
Watch this video and answer question 9.
:// ology-and-astronomy/earth-history- topic/seismic-waves- tutorial/v/seismic-waves

13. V OLCANOES Watch this video and answer question 10.

14. Magama
Types of Magma:
Basaltic- low-silica, low viscosity, runny lava flow (shield volcanoes)
Andesitic- moderate to high explosions (composite and cinder cone volcanoes)
Granitic- high-silica, viscous, (composite and cinder cone volcanoes)

15. Earthquakes
Click on the link below and follow the directions on question #12. com/environment/natural- disasters/forces-of-nature/

16. Igneous (fire-formed) Sedimentary (settled & pressed)
TYPES OF ROCKS
Igneous (fire-formed)
Sedimentary (settled & pressed)
Metamorphic (heat & pressure)

17. ROCK CYCLE

18. Weathering and Erosion
Watch the Breaker and Whoosh Video and answer question 13.

19. Glaciers
Find out what evidence is left behind that glaciers once covered an area! Click on the link below and answer question 14.

20. ASTRONOMY –Space: The Final Frontier!
Rotation—the Earth rotates on it’s axis once every 24 hours.
Revolution—Earth’s elliptical orbit around the Sun in 365 days.

21. Seasons
The angle of the Sun’s rays as they hit the Earth is determined by the relative positions of Sun and Earth

22. Sun, Earth, and Moon The Moon orbits the Earth
The Moon orbit at an angle with respect to the Earth’s orbit around the Sun
The Moon doesn’t shine on its own; it reflects sunlight
The scale of the Moon and Earth’s sizes and distance

23. Phases of the Moon The Sun shines on the Moon.
When the sunlight reflects off the Moon’s far side, we call it a New Moon
When the sunlight reflects off on the Moon’s near side, we call it a Full Moon
CHECK IT OUT!
Answer question 16

24. What are Tides? They are the regular rise and fall in sea level on the
Earth resulting from the gravitational pull of the Moon and Sun on Earth’s waters.

25. Lunar Eclipses FULL MOON
When the Earth’s shadow covers the Moon, we have a lunar eclipse

26. Solar Eclipses NEW MOON
When the Moon’s shadow covers part of the Earth
Only happens at New Moon

27. Solar system, Galaxy, or Universe?
Answer question #20 on the MCAS review sheet.

28. There it is--everything you ever wanted to know about
Earth Science