Transcript Earth Science PPT

Elementary Science
Countdown to the TAKS
Earth Science
Part 1 – Land
By
Annette Venegas
Created in cooperation with
Education Science Specialists, Region 20
Modified by: C. Horejsi
5th Grade Science
Winston Elementary
Earth Science
earth’s physical features, how they
form, and how they change over time.
Highlights of Earth Science
– Earth’s structures &
materials
– Earth processes
– The past vs. the present
– Systems and cycles that
help shape the surface of
the earth.
Earth’s Structure and Materials
– What are the different types of
soils and their properties?
– Why are rocks and minerals so
important to us on earth?
– What is the significance of the
gases found on earth?
– What is the significance of water
on earth and role does it play?
Layers of the Earth
Layers of the Earth
Mantle
Crust
Soil Types
Loam is a
mixture of
Clay, Silt, &
Sand
Sedimentary
Layers
Clay- tiny particles,
Silt-fine, rich ingredients, moved from
some other place
Sand-grainy, mixture
retains moisture
Potting Soil – Large particles
Soil’s place in a Food Web
Earth’s Resources
S.H.E.L.S
Fossil Fuels
PANDA
&
Minerals
S.O.W.
Rocks can be RECYCLED
Minerals are NONRENEWABLE
The Process and the Outcome
(Is it constructive or Destructive)
Construct…Constructive…Construction
to build or build up
Destruct…Destructive…Destruction
to destroy or tear down
Destructive –
wearing away
Constructive –
build up of
sand
Destructive –
wearing away
Destructive –
wearing away
Physical Features - Landforms
Physical Features - Landforms
Plateau
Name them…
Mountains
Valley
Glaciers
A valley in a roof
top
Physical Features - Landforms
Beaches
Islands
Rivers
Physical Features - Landforms
Deltas
Sedimentary
deposits creating a
fan shape delta of
rich soil.
Physical Features - Landforms
The Grand Canyon
Volcanoes
Oceans
Plate Tectonics
What events take place to
cause:
–
–
–
–
Earthquakes
Mountains
Volcanoes
Ridges
Plate Tectonics
The plates may separate,
push against each other,
or one slip under the
other plate.
Events in the “Past”
• Resources, their origins, and how
we classify them.
• Layers of soil, rocks, and minerals.
• Types of fossils, rocks, tree rings
and other ways we can investigate
“what happened before”.
Significance of Fossils
They can
“talk” to us
and tell us
about the
Earth’s
history.
Significance of Tree
Rings!
Count the
rings &
tell the
trees
age…look
at the
damage to
the rings
and know
the past…
Sedimentary Rock Layers
Which layer is the oldest?
Energy from the Sun
• The Sun provides Earth with most of its
energy that powers various activities on
the planet.
– Food Webs (flow of energy)
– Growth of plants (photosynthesis)
– The Water cycle (drives the cycle)
– Creation of winds
– Weather
• These are all driven by energy from
the Sun.
Patterns and Cycles of
Change
Water
Cycle
Patterns and Cycles of Change
Nitrogen Cycle
Patterns and Cycles of
Change
Nitrogen Cycle
Patterns and Cycles of Change
Carbon Cycle
FACTS TO KNOW
24 hours in a day – One Rotation of
Earth
29.5 days in a Lunar Month (about a
calendar month) – the moon’s
revolution around EARTH - 28 days
is often used
365 days in 1 year - Earth’s
Revolution around the SUN
An orbit is the elliptical PATH
an object or planet takes as it
revolves around a
celestial object
The seasons are cause by the
TILT of the Earth on its axis;
Spring, Summer, Fall, Winter
Review this power point
often and gain a true
understanding of Earth &
Space Science